Merge branch 'main' of github.com:meilisearch/meilisearch into CNLHC/change_json_error_message

2022-03-25 19:53:13 +08:00 · 2022-03-25 19:53:13 +08:00 · 193c666bf9
parent 35bf7ee538 c0056ab73f
commit 193c666bf9
62 changed files with 1463 additions and 898 deletions
--- a/.github/workflows/publish-binaries.yml
+++ b/.github/workflows/publish-binaries.yml
@ -6,7 +6,7 @@ name: Publish binaries to release

 jobs:
  publish:
-    name: Publish for ${{ matrix.os }}
+    name: Publish binary for ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
@ -39,7 +39,7 @@ jobs:
        tag: ${{ github.ref }}

  publish-aarch64:
-    name: Publish to GitHub
+    name: Publish binary for aarch64
    runs-on: ${{ matrix.os }}
    continue-on-error: false
    strategy:
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@ -36,6 +36,25 @@ jobs:
        command: test
        args: --locked --release

+  # We run tests in debug also, to make sure that the debug_assertions are hit
+  test-debug:
+    name: Run tests in debug
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - name: Cache dependencies
+        uses: Swatinem/rust-cache@v1.3.0
+      - name: Run tests in debug
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --locked
+
  clippy:
    name: Run Clippy
    runs-on: ubuntu-18.04
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
    "meilisearch-http",
    "meilisearch-error",
--- a/bors.toml
+++ b/bors.toml
@ -3,7 +3,8 @@ status = [
    'Tests on macos-latest',
    'Tests on windows-latest',
    'Run Clippy',
-    'Run Rustfmt'
+    'Run Rustfmt',
+    'Run tests in debug',
 ]
 pr_status = ['Milestone Check']
 # 3 hours timeout
--- a/meilisearch-auth/Cargo.toml
+++ b/meilisearch-auth/Cargo.toml
@ -5,11 +5,11 @@ edition = "2021"

 [dependencies]
 enum-iterator = "0.7.0"
-heed = { git = "https://github.com/Kerollmops/heed", tag = "v0.12.1" }
-sha2 = "0.9.6"
-chrono = { version = "0.4.19", features = ["serde"] }
 meilisearch-error = { path = "../meilisearch-error" }
-serde_json = { version = "1.0.67", features = ["preserve_order"] }
+milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.24.0" }
 rand = "0.8.4"
-serde = { version = "1.0.130", features = ["derive"] }
-thiserror = "1.0.28"
+serde = { version = "1.0.136", features = ["derive"] }
+serde_json = { version = "1.0.79", features = ["preserve_order"] }
+sha2 = "0.10.2"
+thiserror = "1.0.30"
+time = { version = "0.3.7", features = ["serde-well-known", "formatting", "parsing", "macros"] }
--- a/meilisearch-auth/src/error.rs
+++ b/meilisearch-auth/src/error.rs
@ -10,13 +10,13 @@ pub type Result<T> = std::result::Result<T, AuthControllerError>;
 pub enum AuthControllerError {
    #[error("`{0}` field is mandatory.")]
    MissingParameter(&'static str),
-    #[error("actions field value `{0}` is invalid. It should be an array of string representing action names.")]
+    #[error("`actions` field value `{0}` is invalid. It should be an array of string representing action names.")]
    InvalidApiKeyActions(Value),
-    #[error("indexes field value `{0}` is invalid. It should be an array of string representing index names.")]
+    #[error("`indexes` field value `{0}` is invalid. It should be an array of string representing index names.")]
    InvalidApiKeyIndexes(Value),
-    #[error("expiresAt field value `{0}` is invalid. It should be in ISO-8601 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DDTHH:MM:SS'.")]
+    #[error("`expiresAt` field value `{0}` is invalid. It should follow the RFC 3339 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DD HH:MM:SS'.")]
    InvalidApiKeyExpiresAt(Value),
-    #[error("description field value `{0}` is invalid. It should be a string or specified as a null value.")]
+    #[error("`description` field value `{0}` is invalid. It should be a string or specified as a null value.")]
    InvalidApiKeyDescription(Value),
    #[error("API key `{0}` not found.")]
    ApiKeyNotFound(String),
@ -25,7 +25,7 @@ pub enum AuthControllerError {
 }

 internal_error!(
-    AuthControllerError: heed::Error,
+    AuthControllerError: milli::heed::Error,
    std::io::Error,
    serde_json::Error,
    std::str::Utf8Error
--- a/meilisearch-auth/src/key.rs
+++ b/meilisearch-auth/src/key.rs
@ -1,10 +1,12 @@
 use crate::action::Action;
 use crate::error::{AuthControllerError, Result};
 use crate::store::{KeyId, KEY_ID_LENGTH};
-use chrono::{DateTime, NaiveDate, NaiveDateTime, Utc};
 use rand::Rng;
 use serde::{Deserialize, Serialize};
 use serde_json::{from_value, Value};
+use time::format_description::well_known::Rfc3339;
+use time::macros::{format_description, time};
+use time::{Date, OffsetDateTime, PrimitiveDateTime};

 #[derive(Debug, Deserialize, Serialize)]
 pub struct Key {
@ -13,9 +15,12 @@ pub struct Key {
    pub id: KeyId,
    pub actions: Vec<Action>,
    pub indexes: Vec<String>,
-    pub expires_at: Option<DateTime<Utc>>,
-    pub created_at: DateTime<Utc>,
-    pub updated_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339::option")]
+    pub expires_at: Option<OffsetDateTime>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub created_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub updated_at: OffsetDateTime,
 }

 impl Key {
@ -52,8 +57,8 @@ impl Key {
            .map(parse_expiration_date)
            .ok_or(AuthControllerError::MissingParameter("expiresAt"))??;

-        let created_at = Utc::now();
-        let updated_at = Utc::now();
+        let created_at = OffsetDateTime::now_utc();
+        let updated_at = created_at;

        Ok(Self {
            description,
@ -89,24 +94,26 @@ impl Key {
            self.expires_at = parse_expiration_date(exp)?;
        }

-        self.updated_at = Utc::now();
+        self.updated_at = OffsetDateTime::now_utc();

        Ok(())
    }

    pub(crate) fn default_admin() -> Self {
+        let now = OffsetDateTime::now_utc();
        Self {
            description: Some("Default Admin API Key (Use it for all other operations. Caution! Do not use it on a public frontend)".to_string()),
            id: generate_id(),
            actions: vec![Action::All],
            indexes: vec!["*".to_string()],
            expires_at: None,
-            created_at: Utc::now(),
-            updated_at: Utc::now(),
+            created_at: now,
+            updated_at: now,
        }
    }

    pub(crate) fn default_search() -> Self {
+        let now = OffsetDateTime::now_utc();
        Self {
            description: Some(
                "Default Search API Key (Use it to search from the frontend)".to_string(),
@ -115,8 +122,8 @@ impl Key {
            actions: vec![Action::Search],
            indexes: vec!["*".to_string()],
            expires_at: None,
-            created_at: Utc::now(),
-            updated_at: Utc::now(),
+            created_at: now,
+            updated_at: now,
        }
    }
 }
@ -134,22 +141,34 @@ fn generate_id() -> [u8; KEY_ID_LENGTH] {
    bytes
 }

-fn parse_expiration_date(value: &Value) -> Result<Option<DateTime<Utc>>> {
+fn parse_expiration_date(value: &Value) -> Result<Option<OffsetDateTime>> {
    match value {
-        Value::String(string) => DateTime::parse_from_rfc3339(string)
-            .map(|d| d.into())
+        Value::String(string) => OffsetDateTime::parse(string, &Rfc3339)
            .or_else(|_| {
-                NaiveDateTime::parse_from_str(string, "%Y-%m-%dT%H:%M:%S")
-                    .map(|naive| DateTime::from_utc(naive, Utc))
+                PrimitiveDateTime::parse(
+                    string,
+                    format_description!(
+                        "[year repr:full base:calendar]-[month repr:numerical]-[day]T[hour]:[minute]:[second]"
+                    ),
+                ).map(|datetime| datetime.assume_utc())
            })
            .or_else(|_| {
-                NaiveDate::parse_from_str(string, "%Y-%m-%d")
-                    .map(|naive| DateTime::from_utc(naive.and_hms(0, 0, 0), Utc))
+                PrimitiveDateTime::parse(
+                    string,
+                    format_description!(
+                        "[year repr:full base:calendar]-[month repr:numerical]-[day] [hour]:[minute]:[second]"
+                    ),
+                ).map(|datetime| datetime.assume_utc())
+            })
+            .or_else(|_| {
+                    Date::parse(string, format_description!(
+                        "[year repr:full base:calendar]-[month repr:numerical]-[day]"
+                    )).map(|date| PrimitiveDateTime::new(date, time!(00:00)).assume_utc())
            })
            .map_err(|_| AuthControllerError::InvalidApiKeyExpiresAt(value.clone()))
            // check if the key is already expired.
            .and_then(|d| {
-                if d > Utc::now() {
+                if d > OffsetDateTime::now_utc() {
                    Ok(d)
                } else {
                    Err(AuthControllerError::InvalidApiKeyExpiresAt(value.clone()))
--- a/meilisearch-auth/src/lib.rs
+++ b/meilisearch-auth/src/lib.rs
@ -9,10 +9,10 @@ use std::path::Path;
 use std::str::from_utf8;
 use std::sync::Arc;

-use chrono::Utc;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 use sha2::{Digest, Sha256};
+use time::OffsetDateTime;

 pub use action::{actions, Action};
 use error::{AuthControllerError, Result};
@ -40,18 +40,18 @@ impl AuthController {
        })
    }

-    pub async fn create_key(&self, value: Value) -> Result<Key> {
+    pub fn create_key(&self, value: Value) -> Result<Key> {
        let key = Key::create_from_value(value)?;
        self.store.put_api_key(key)
    }

-    pub async fn update_key(&self, key: impl AsRef<str>, value: Value) -> Result<Key> {
-        let mut key = self.get_key(key).await?;
+    pub fn update_key(&self, key: impl AsRef<str>, value: Value) -> Result<Key> {
+        let mut key = self.get_key(key)?;
        key.update_from_value(value)?;
        self.store.put_api_key(key)
    }

-    pub async fn get_key(&self, key: impl AsRef<str>) -> Result<Key> {
+    pub fn get_key(&self, key: impl AsRef<str>) -> Result<Key> {
        self.store
            .get_api_key(&key)?
            .ok_or_else(|| AuthControllerError::ApiKeyNotFound(key.as_ref().to_string()))
@ -101,11 +101,11 @@ impl AuthController {
        Ok(filters)
    }

-    pub async fn list_keys(&self) -> Result<Vec<Key>> {
+    pub fn list_keys(&self) -> Result<Vec<Key>> {
        self.store.list_api_keys()
    }

-    pub async fn delete_key(&self, key: impl AsRef<str>) -> Result<()> {
+    pub fn delete_key(&self, key: impl AsRef<str>) -> Result<()> {
        if self.store.delete_api_key(&key)? {
            Ok(())
        } else {
@ -149,7 +149,7 @@ impl AuthController {
                None => self.store.prefix_first_expiration_date(key, action)?,
            }) {
            // check expiration date.
-            Some(Some(exp)) => Ok(Utc::now() < exp),
+            Some(Some(exp)) => Ok(OffsetDateTime::now_utc() < exp),
            // no expiration date.
            Some(None) => Ok(true),
            // action or index forbidden.
--- a/meilisearch-auth/src/store.rs
+++ b/meilisearch-auth/src/store.rs
@ -8,9 +8,9 @@ use std::path::Path;
 use std::str;
 use std::sync::Arc;

-use chrono::{DateTime, Utc};
-use heed::types::{ByteSlice, DecodeIgnore, SerdeJson};
-use heed::{Database, Env, EnvOpenOptions, RwTxn};
+use milli::heed::types::{ByteSlice, DecodeIgnore, SerdeJson};
+use milli::heed::{Database, Env, EnvOpenOptions, RwTxn};
+use time::OffsetDateTime;

 use super::error::Result;
 use super::{Action, Key};
@ -27,7 +27,7 @@ pub type KeyId = [u8; KEY_ID_LENGTH];
 pub struct HeedAuthStore {
    env: Arc<Env>,
    keys: Database<ByteSlice, SerdeJson<Key>>,
-    action_keyid_index_expiration: Database<KeyIdActionCodec, SerdeJson<Option<DateTime<Utc>>>>,
+    action_keyid_index_expiration: Database<KeyIdActionCodec, SerdeJson<Option<OffsetDateTime>>>,
    should_close_on_drop: bool,
 }

@ -39,7 +39,7 @@ impl Drop for HeedAuthStore {
    }
 }

-pub fn open_auth_store_env(path: &Path) -> heed::Result<heed::Env> {
+pub fn open_auth_store_env(path: &Path) -> milli::heed::Result<milli::heed::Env> {
    let mut options = EnvOpenOptions::new();
    options.map_size(AUTH_STORE_SIZE); // 1GB
    options.max_dbs(2);
@ -150,7 +150,7 @@ impl HeedAuthStore {
        key: &[u8],
        action: Action,
        index: Option<&[u8]>,
-    ) -> Result<Option<Option<DateTime<Utc>>>> {
+    ) -> Result<Option<Option<OffsetDateTime>>> {
        let rtxn = self.env.read_txn()?;
        match self.get_key_id(key) {
            Some(id) => {
@ -165,7 +165,7 @@ impl HeedAuthStore {
        &self,
        key: &[u8],
        action: Action,
-    ) -> Result<Option<Option<DateTime<Utc>>>> {
+    ) -> Result<Option<Option<OffsetDateTime>>> {
        let rtxn = self.env.read_txn()?;
        match self.get_key_id(key) {
            Some(id) => {
@ -203,7 +203,7 @@ impl HeedAuthStore {
 /// optionnally on a spcific index, for a given key.
 pub struct KeyIdActionCodec;

-impl<'a> heed::BytesDecode<'a> for KeyIdActionCodec {
+impl<'a> milli::heed::BytesDecode<'a> for KeyIdActionCodec {
    type DItem = (KeyId, Action, Option<&'a [u8]>);

    fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
@ -218,7 +218,7 @@ impl<'a> heed::BytesDecode<'a> for KeyIdActionCodec {
    }
 }

-impl<'a> heed::BytesEncode<'a> for KeyIdActionCodec {
+impl<'a> milli::heed::BytesEncode<'a> for KeyIdActionCodec {
    type EItem = (&'a KeyId, &'a Action, Option<&'a [u8]>);

    fn bytes_encode((key_id, action, index): &Self::EItem) -> Option<Cow<[u8]>> {
--- a/meilisearch-error/Cargo.toml
+++ b/meilisearch-error/Cargo.toml
@ -5,11 +5,11 @@ authors = ["marin <postma.marin@protonmail.com>"]
 edition = "2021"

 [dependencies]
-actix-web = { version = "4", default-features = false }
+actix-web = { version = "4.0.1", default-features = false }
 proptest = { version = "1.0.0", optional = true }
 proptest-derive = { version = "0.3.0", optional = true }
-serde = { version = "1.0.130", features = ["derive"] }
-serde_json = "1.0.69"
+serde = { version = "1.0.136", features = ["derive"] }
+serde_json = "1.0.79"

 [features]
 test-traits = ["proptest", "proptest-derive"]
--- a/meilisearch-http/Cargo.toml
+++ b/meilisearch-http/Cargo.toml
@ -11,82 +11,82 @@ name = "meilisearch"
 path = "src/main.rs"

 [build-dependencies]
-static-files = { version = "0.2.1", optional = true }
-anyhow = { version = "1.0.43", optional = true }
-cargo_toml = { version = "0.9", optional = true }
+anyhow = { version = "1.0.56", optional = true }
+cargo_toml = { version = "0.11.4", optional = true }
 hex = { version = "0.4.3", optional = true }
-reqwest = { version = "0.11.4", features = ["blocking", "rustls-tls"], default-features = false, optional = true }
-sha-1 = { version = "0.9.8", optional = true }
-tempfile = { version = "3.2.0", optional = true }
-vergen = { version = "5.1.15", default-features = false, features = ["git"] }
+reqwest = { version = "0.11.9", features = ["blocking", "rustls-tls"], default-features = false, optional = true }
+sha-1 = { version = "0.10.0", optional = true }
+static-files = { version = "0.2.3", optional = true }
+tempfile = { version = "3.3.0", optional = true }
+vergen = { version = "7.0.0", default-features = false, features = ["git"] }
 zip = { version = "0.5.13", optional = true }

 [dependencies]
-actix-cors = "0.6"
-actix-web = { version = "4", features = ["rustls"] }
+actix-cors = "0.6.1"
+actix-web = { version = "4.0.1", default-features = false, features = ["macros", "compress-brotli", "compress-gzip", "cookies", "rustls"] }
 actix-web-static-files = { git = "https://github.com/kilork/actix-web-static-files.git", rev = "2d3b6160", optional = true }
-anyhow = { version = "1.0.43", features = ["backtrace"] }
-arc-swap = "1.3.2"
-async-stream = "0.3.2"
-async-trait = "0.1.51"
+anyhow = { version = "1.0.56", features = ["backtrace"] }
+async-stream = "0.3.3"
+async-trait = "0.1.52"
 bstr = "0.2.17"
-byte-unit = { version = "4.0.12", default-features = false, features = ["std", "serde"] }
+byte-unit = { version = "4.0.14", default-features = false, features = ["std", "serde"] }
 bytes = "1.1.0"
-chrono = { version = "0.4.19", features = ["serde"] }
-crossbeam-channel = "0.5.1"
+clap = { version = "3.1.6", features = ["derive", "env"] }
+crossbeam-channel = "0.5.2"
 either = "1.6.1"
 env_logger = "0.9.0"
-flate2 = "1.0.21"
+flate2 = "1.0.22"
 fst = "0.4.7"
-futures = "0.3.17"
-futures-util = "0.3.17"
-heed = { git = "https://github.com/Kerollmops/heed", tag = "v0.12.1" }
-http = "0.2.4"
-indexmap = { version = "1.7.0", features = ["serde-1"] }
-itertools = "0.10.1"
-jsonwebtoken = "7"
+futures = "0.3.21"
+futures-util = "0.3.21"
+http = "0.2.6"
+indexmap = { version = "1.8.0", features = ["serde-1"] }
+itertools = "0.10.3"
+jsonwebtoken = "8.0.1"
 log = "0.4.14"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-error = { path = "../meilisearch-error" }
 meilisearch-lib = { path = "../meilisearch-lib" }
 mime = "0.3.16"
-num_cpus = "1.13.0"
+num_cpus = "1.13.1"
 obkv = "0.2.0"
-once_cell = "1.8.0"
-parking_lot = "0.11.2"
-pin-project = "1.0.8"
+once_cell = "1.10.0"
+parking_lot = "0.12.0"
+pin-project-lite = "0.2.8"
 platform-dirs = "0.3.0"
-rand = "0.8.4"
+rand = "0.8.5"
 rayon = "1.5.1"
-regex = "1.5.4"
-rustls = "0.20.2"
-rustls-pemfile = "0.2"
-segment = { version = "0.1.2", optional = true }
-serde = { version = "1.0.130", features = ["derive"] }
-serde_json = { version = "1.0.67", features = ["preserve_order"] }
-sha2 = "0.9.6"
-siphasher = "0.3.7"
-slice-group-by = "0.2.6"
-static-files = { version = "0.2.1", optional = true }
-clap = { version = "3.0", features = ["derive", "env"] }
-sysinfo = "0.20.2"
-tar = "0.4.37"
-tempfile = "3.2.0"
-thiserror = "1.0.28"
-tokio = { version = "1.11.0", features = ["full"] }
-tokio-stream = "0.1.7"
+regex = "1.5.5"
+rustls = "0.20.4"
+rustls-pemfile = "0.3.0"
+segment = { version = "0.2.0", optional = true }
+serde = { version = "1.0.136", features = ["derive"] }
+serde_json = { version = "1.0.79", features = ["preserve_order"] }
+sha2 = "0.10.2"
+siphasher = "0.3.10"
+slice-group-by = "0.3.0"
+static-files = { version = "0.2.3", optional = true }
+sysinfo = "0.23.5"
+tar = "0.4.38"
+tempfile = "3.3.0"
+thiserror = "1.0.30"
+time = { version = "0.3.7", features = ["serde-well-known", "formatting", "parsing", "macros"] }
+tokio = { version = "1.17.0", features = ["full"] }
+tokio-stream = "0.1.8"
 uuid = { version = "0.8.2", features = ["serde"] }
 walkdir = "2.3.2"

 [dev-dependencies]
-actix-rt = "2.2.0"
+actix-rt = "2.7.0"
 assert-json-diff = "2.0.1"
 maplit = "1.0.2"
-paste = "1.0.5"
+paste = "1.0.6"
 serde_url_params = "0.2.1"
 urlencoding = "2.1.0"

 [features]
+default = ["analytics", "mini-dashboard"]
+analytics = ["segment"]
 mini-dashboard = [
    "actix-web-static-files",
    "static-files",
@ -98,12 +98,10 @@ mini-dashboard = [
    "tempfile",
    "zip",
 ]
-analytics = ["segment"]
-default = ["analytics", "mini-dashboard"]

 [target.'cfg(target_os = "linux")'.dependencies]
-tikv-jemallocator = "0.4.1"
+tikv-jemallocator = "0.4.3"

 [package.metadata.mini-dashboard]
-assets-url = "https://github.com/meilisearch/mini-dashboard/releases/download/v0.1.7/build.zip"
-sha1 = "e2feedf271917c4b7b88998eff5aaaea1d3925b9"
+assets-url = "https://github.com/meilisearch/mini-dashboard/releases/download/v0.1.9/build.zip"
+sha1 = "b1833c3e5dc6b5d9d519ae4834935ae6c8a47024"
--- a/meilisearch-http/src/analytics/segment_analytics.rs
+++ b/meilisearch-http/src/analytics/segment_analytics.rs
@ -6,7 +6,6 @@ use std::time::{Duration, Instant};

 use actix_web::http::header::USER_AGENT;
 use actix_web::HttpRequest;
-use chrono::{DateTime, Utc};
 use http::header::CONTENT_TYPE;
 use meilisearch_auth::SearchRules;
 use meilisearch_lib::index::{SearchQuery, SearchResult};
@ -18,6 +17,7 @@ use segment::message::{Identify, Track, User};
 use segment::{AutoBatcher, Batcher, HttpClient};
 use serde_json::{json, Value};
 use sysinfo::{DiskExt, System, SystemExt};
+use time::OffsetDateTime;
 use tokio::select;
 use tokio::sync::mpsc::{self, Receiver, Sender};
 use uuid::Uuid;
@ -323,7 +323,7 @@ impl Segment {

 #[derive(Default)]
 pub struct SearchAggregator {
-    timestamp: Option<DateTime<Utc>>,
+    timestamp: Option<OffsetDateTime>,

    // context
    user_agents: HashSet<String>,
@ -360,7 +360,7 @@ pub struct SearchAggregator {
 impl SearchAggregator {
    pub fn from_query(query: &SearchQuery, request: &HttpRequest) -> Self {
        let mut ret = Self::default();
-        ret.timestamp = Some(chrono::offset::Utc::now());
+        ret.timestamp = Some(OffsetDateTime::now_utc());

        ret.total_received = 1;
        ret.user_agents = extract_user_agents(request).into_iter().collect();
@ -504,7 +504,7 @@ impl SearchAggregator {

 #[derive(Default)]
 pub struct DocumentsAggregator {
-    timestamp: Option<DateTime<Utc>>,
+    timestamp: Option<OffsetDateTime>,

    // set to true when at least one request was received
    updated: bool,
@ -524,7 +524,7 @@ impl DocumentsAggregator {
        request: &HttpRequest,
    ) -> Self {
        let mut ret = Self::default();
-        ret.timestamp = Some(chrono::offset::Utc::now());
+        ret.timestamp = Some(OffsetDateTime::now_utc());

        ret.updated = true;
        ret.user_agents = extract_user_agents(request).into_iter().collect();
--- a/meilisearch-http/src/extractors/authentication/error.rs
+++ b/meilisearch-http/src/extractors/authentication/error.rs
@ -5,7 +5,7 @@ pub enum AuthenticationError {
    #[error("The Authorization header is missing. It must use the bearer authorization method.")]
    MissingAuthorizationHeader,
    #[error("The provided API key is invalid.")]
-    InvalidToken(String),
+    InvalidToken,
    // Triggered on configuration error.
    #[error("An internal error has occurred. `Irretrievable state`.")]
    IrretrievableState,
@ -15,7 +15,7 @@ impl ErrorCode for AuthenticationError {
    fn error_code(&self) -> Code {
        match self {
            AuthenticationError::MissingAuthorizationHeader => Code::MissingAuthorizationHeader,
-            AuthenticationError::InvalidToken(_) => Code::InvalidToken,
+            AuthenticationError::InvalidToken => Code::InvalidToken,
            AuthenticationError::IrretrievableState => Code::Internal,
        }
    }
--- a/meilisearch-http/src/extractors/authentication/mod.rs
+++ b/meilisearch-http/src/extractors/authentication/mod.rs
@ -2,28 +2,83 @@ mod error;

 use std::marker::PhantomData;
 use std::ops::Deref;
+use std::pin::Pin;

 use actix_web::FromRequest;
 use futures::future::err;
-use futures::future::{ok, Ready};
-use meilisearch_error::ResponseError;
+use futures::Future;
+use meilisearch_error::{Code, ResponseError};

 use error::AuthenticationError;
 use meilisearch_auth::{AuthController, AuthFilter};

-pub struct GuardedData<T, D> {
+pub struct GuardedData<P, D> {
    data: D,
    filters: AuthFilter,
-    _marker: PhantomData<T>,
+    _marker: PhantomData<P>,
 }

-impl<T, D> GuardedData<T, D> {
+impl<P, D> GuardedData<P, D> {
    pub fn filters(&self) -> &AuthFilter {
        &self.filters
    }
+
+    async fn auth_bearer(
+        auth: AuthController,
+        token: String,
+        index: Option<String>,
+        data: Option<D>,
+    ) -> Result<Self, ResponseError>
+    where
+        P: Policy + 'static,
+    {
+        match Self::authenticate(auth, token, index).await? {
+            Some(filters) => match data {
+                Some(data) => Ok(Self {
+                    data,
+                    filters,
+                    _marker: PhantomData,
+                }),
+                None => Err(AuthenticationError::IrretrievableState.into()),
+            },
+            None => Err(AuthenticationError::InvalidToken.into()),
+        }
+    }
+
+    async fn auth_token(auth: AuthController, data: Option<D>) -> Result<Self, ResponseError>
+    where
+        P: Policy + 'static,
+    {
+        match Self::authenticate(auth, String::new(), None).await? {
+            Some(filters) => match data {
+                Some(data) => Ok(Self {
+                    data,
+                    filters,
+                    _marker: PhantomData,
+                }),
+                None => Err(AuthenticationError::IrretrievableState.into()),
+            },
+            None => Err(AuthenticationError::MissingAuthorizationHeader.into()),
+        }
+    }
+
+    async fn authenticate(
+        auth: AuthController,
+        token: String,
+        index: Option<String>,
+    ) -> Result<Option<AuthFilter>, ResponseError>
+    where
+        P: Policy + 'static,
+    {
+        Ok(tokio::task::spawn_blocking(move || {
+            P::authenticate(auth, token.as_ref(), index.as_deref())
+        })
+        .await
+        .map_err(|e| ResponseError::from_msg(e.to_string(), Code::Internal))?)
+    }
 }

-impl<T, D> Deref for GuardedData<T, D> {
+impl<P, D> Deref for GuardedData<P, D> {
    type Target = D;

    fn deref(&self) -> &Self::Target {
@ -34,7 +89,7 @@ impl<T, D> Deref for GuardedData<T, D> {
 impl<P: Policy + 'static, D: 'static + Clone> FromRequest for GuardedData<P, D> {
    type Error = ResponseError;

-    type Future = Ready<Result<Self, Self::Error>>;
+    type Future = Pin<Box<dyn Future<Output = Result<Self, Self::Error>>>>;

    fn from_request(
        req: &actix_web::HttpRequest,
@ -51,40 +106,22 @@ impl<P: Policy + 'static, D: 'static + Clone> FromRequest for GuardedData<P, D>
                        // TODO: find a less hardcoded way?
                        let index = req.match_info().get("index_uid");
                        match type_token.next() {
-                            Some(token) => match P::authenticate(auth, token, index) {
-                                Some(filters) => match req.app_data::<D>().cloned() {
-                                    Some(data) => ok(Self {
-                                        data,
-                                        filters,
-                                        _marker: PhantomData,
-                                    }),
-                                    None => err(AuthenticationError::IrretrievableState.into()),
-                                },
-                                None => {
-                                    let token = token.to_string();
-                                    err(AuthenticationError::InvalidToken(token).into())
-                                }
-                            },
-                            None => {
-                                err(AuthenticationError::InvalidToken("unknown".to_string()).into())
-                            }
+                            Some(token) => Box::pin(Self::auth_bearer(
+                                auth,
+                                token.to_string(),
+                                index.map(String::from),
+                                req.app_data::<D>().cloned(),
+                            )),
+                            None => Box::pin(err(AuthenticationError::InvalidToken.into())),
                        }
                    }
-                    _otherwise => err(AuthenticationError::MissingAuthorizationHeader.into()),
-                },
-                None => match P::authenticate(auth, "", None) {
-                    Some(filters) => match req.app_data::<D>().cloned() {
-                        Some(data) => ok(Self {
-                            data,
-                            filters,
-                            _marker: PhantomData,
-                        }),
-                        None => err(AuthenticationError::IrretrievableState.into()),
-                    },
-                    None => err(AuthenticationError::MissingAuthorizationHeader.into()),
+                    _otherwise => {
+                        Box::pin(err(AuthenticationError::MissingAuthorizationHeader.into()))
+                    }
                },
+                None => Box::pin(Self::auth_token(auth, req.app_data::<D>().cloned())),
            },
-            None => err(AuthenticationError::IrretrievableState.into()),
+            None => Box::pin(err(AuthenticationError::IrretrievableState.into())),
        }
    }
 }
@ -94,21 +131,22 @@ pub trait Policy {
 }

 pub mod policies {
-    use chrono::Utc;
-    use jsonwebtoken::{dangerous_insecure_decode, decode, Algorithm, DecodingKey, Validation};
-    use once_cell::sync::Lazy;
+    use jsonwebtoken::{decode, Algorithm, DecodingKey, Validation};
    use serde::{Deserialize, Serialize};
+    use time::OffsetDateTime;

    use crate::extractors::authentication::Policy;
    use meilisearch_auth::{Action, AuthController, AuthFilter, SearchRules};
    // reexport actions in policies in order to be used in routes configuration.
    pub use meilisearch_auth::actions;

-    pub static TENANT_TOKEN_VALIDATION: Lazy<Validation> = Lazy::new(|| Validation {
-        validate_exp: false,
-        algorithms: vec![Algorithm::HS256, Algorithm::HS384, Algorithm::HS512],
-        ..Default::default()
-    });
+    fn tenant_token_validation() -> Validation {
+        let mut validation = Validation::default();
+        validation.validate_exp = false;
+        validation.required_spec_claims.remove("exp");
+        validation.algorithms = vec![Algorithm::HS256, Algorithm::HS384, Algorithm::HS512];
+        validation
+    }

    pub struct MasterPolicy;

@ -167,12 +205,17 @@ pub mod policies {
                return None;
            }

+            let mut validation = tenant_token_validation();
+            validation.insecure_disable_signature_validation();
+            let dummy_key = DecodingKey::from_secret(b"secret");
+            let token_data = decode::<Claims>(token, &dummy_key, &validation).ok()?;
+
            // get token fields without validating it.
            let Claims {
                search_rules,
                exp,
                api_key_prefix,
-            } = dangerous_insecure_decode::<Claims>(token).ok()?.claims;
+            } = token_data.claims;

            // Check index access if an index restriction is provided.
            if let Some(index) = index {
@ -183,7 +226,7 @@ pub mod policies {

            // Check if token is expired.
            if let Some(exp) = exp {
-                if Utc::now().timestamp() > exp {
+                if OffsetDateTime::now_utc().unix_timestamp() > exp {
                    return None;
                }
            }
@ -198,7 +241,7 @@ pub mod policies {
                decode::<Claims>(
                    token,
                    &DecodingKey::from_secret(key.as_bytes()),
-                    &TENANT_TOKEN_VALIDATION,
+                    &tenant_token_validation(),
                )
                .ok()?;

--- a/meilisearch-http/src/extractors/mod.rs
+++ b/meilisearch-http/src/extractors/mod.rs
@ -1,3 +1,4 @@
 pub mod payload;
 #[macro_use]
 pub mod authentication;
+pub mod sequential_extractor;
--- a/meilisearch-http/src/extractors/sequential_extractor.rs
+++ b/meilisearch-http/src/extractors/sequential_extractor.rs
@ -0,0 +1,148 @@
+#![allow(non_snake_case)]
+use std::{future::Future, pin::Pin, task::Poll};
+
+use actix_web::{dev::Payload, FromRequest, Handler, HttpRequest};
+use pin_project_lite::pin_project;
+
+/// `SeqHandler` is an actix `Handler` that enforces that extractors errors are returned in the
+/// same order as they are defined in the wrapped handler. This is needed because, by default, actix
+/// resolves the extractors concurrently, whereas we always need the authentication extractor to
+/// throw first.
+#[derive(Clone)]
+pub struct SeqHandler<H>(pub H);
+
+pub struct SeqFromRequest<T>(T);
+
+/// This macro implements `FromRequest` for arbitrary arity handler, except for one, which is
+/// useless anyway.
+macro_rules! gen_seq {
+    ($ty:ident; $($T:ident)+) => {
+        pin_project! {
+            pub struct $ty<$($T: FromRequest), +> {
+                $(
+                #[pin]
+                $T: ExtractFuture<$T::Future, $T, $T::Error>,
+                )+
+            }
+        }
+
+        impl<$($T: FromRequest), +> Future for $ty<$($T),+> {
+            type Output = Result<SeqFromRequest<($($T),+)>, actix_web::Error>;
+
+            fn poll(self: Pin<&mut Self>, cx: &mut std::task::Context<'_>) -> Poll<Self::Output> {
+                let mut this = self.project();
+
+                let mut count_fut = 0;
+                let mut count_finished = 0;
+
+                $(
+                count_fut += 1;
+                match this.$T.as_mut().project() {
+                    ExtractProj::Future { fut } => match fut.poll(cx) {
+                        Poll::Ready(Ok(output)) => {
+                            count_finished += 1;
+                            let _ = this
+                                .$T
+                                .as_mut()
+                                .project_replace(ExtractFuture::Done { output });
+                        }
+                        Poll::Ready(Err(error)) => {
+                            count_finished += 1;
+                            let _ = this
+                                .$T
+                                .as_mut()
+                                .project_replace(ExtractFuture::Error { error });
+                        }
+                        Poll::Pending => (),
+                    },
+                    ExtractProj::Done { .. } => count_finished += 1,
+                    ExtractProj::Error { .. } => {
+                        // short circuit if all previous are finished and we had an error.
+                        if count_finished == count_fut {
+                            match this.$T.project_replace(ExtractFuture::Empty) {
+                                ExtractReplaceProj::Error { error } => {
+                                    return Poll::Ready(Err(error.into()))
+                                }
+                                _ => unreachable!("Invalid future state"),
+                            }
+                        } else {
+                            count_finished += 1;
+                        }
+                    }
+                    ExtractProj::Empty => unreachable!("From request polled after being finished. {}", stringify!($T)),
+                }
+                )+
+
+                if count_fut == count_finished {
+                    let result = (
+                        $(
+                            match this.$T.project_replace(ExtractFuture::Empty) {
+                                ExtractReplaceProj::Done { output } => output,
+                                ExtractReplaceProj::Error { error } => return Poll::Ready(Err(error.into())),
+                                _ => unreachable!("Invalid future state"),
+                            },
+                        )+
+                    );
+
+                    Poll::Ready(Ok(SeqFromRequest(result)))
+                } else {
+                    Poll::Pending
+                }
+            }
+        }
+
+        impl<$($T: FromRequest,)+> FromRequest for SeqFromRequest<($($T,)+)> {
+            type Error = actix_web::Error;
+
+            type Future = $ty<$($T),+>;
+
+            fn from_request(req: &HttpRequest, payload: &mut Payload) -> Self::Future {
+                $ty {
+                $(
+                    $T: ExtractFuture::Future {
+                        fut: $T::from_request(req, payload),
+                    },
+                )+
+                }
+            }
+        }
+
+    impl<Han, $($T: FromRequest),+> Handler<SeqFromRequest<($($T),+)>> for SeqHandler<Han>
+    where
+        Han: Handler<($($T),+)>,
+    {
+        type Output = Han::Output;
+        type Future = Han::Future;
+
+        fn call(&self, args: SeqFromRequest<($($T),+)>) -> Self::Future {
+            self.0.call(args.0)
+        }
+    }
+    };
+}
+
+// Not working for a single argument, but then, it is not really necessary.
+// gen_seq! { SeqFromRequestFut1; A }
+gen_seq! { SeqFromRequestFut2; A B }
+gen_seq! { SeqFromRequestFut3; A B C }
+gen_seq! { SeqFromRequestFut4; A B C D }
+gen_seq! { SeqFromRequestFut5; A B C D E }
+gen_seq! { SeqFromRequestFut6; A B C D E F }
+
+pin_project! {
+    #[project = ExtractProj]
+    #[project_replace = ExtractReplaceProj]
+    enum ExtractFuture<Fut, Res, Err> {
+        Future {
+            #[pin]
+            fut: Fut,
+        },
+        Done {
+            output: Res,
+        },
+        Error {
+            error: Err,
+        },
+        Empty,
+    }
+}
--- a/meilisearch-http/src/helpers/env.rs
+++ b/meilisearch-http/src/helpers/env.rs
@ -1,10 +1,11 @@
+use meilisearch_lib::heed::Env;
 use walkdir::WalkDir;

 pub trait EnvSizer {
    fn size(&self) -> u64;
 }

-impl EnvSizer for heed::Env {
+impl EnvSizer for Env {
    fn size(&self) -> u64 {
        WalkDir::new(self.path())
            .into_iter()
--- a/meilisearch-http/src/lib.rs
+++ b/meilisearch-http/src/lib.rs
@ -32,7 +32,7 @@ pub fn setup_meilisearch(opt: &Opt) -> anyhow::Result<MeiliSearch> {

    // enable autobatching?
    let _ = AUTOBATCHING_ENABLED.store(
-        opt.scheduler_options.enable_autobatching,
+        opt.scheduler_options.enable_auto_batching,
        std::sync::atomic::Ordering::Relaxed,
    );

--- a/meilisearch-http/src/option.rs
+++ b/meilisearch-http/src/option.rs
@ -42,6 +42,7 @@ pub struct Opt {

    /// Do not send analytics to Meili.
    #[cfg(all(not(debug_assertions), feature = "analytics"))]
+    #[serde(skip)] // we can't send true
    #[clap(long, env = "MEILI_NO_ANALYTICS")]
    pub no_analytics: bool,

@ -148,6 +149,7 @@ pub struct Opt {
    #[clap(skip)]
    pub indexer_options: IndexerOpts,

+    #[serde(flatten)]
    #[clap(flatten)]
    pub scheduler_options: SchedulerConfig,
 }
@ -256,3 +258,13 @@ fn load_ocsp(filename: &Option<PathBuf>) -> anyhow::Result<Vec<u8>> {

    Ok(ret)
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_valid_opt() {
+        assert!(Opt::try_parse_from(Some("")).is_ok());
+    }
+}
--- a/meilisearch-http/src/routes/api_key.rs
+++ b/meilisearch-http/src/routes/api_key.rs
@ -1,26 +1,29 @@
 use std::str;

 use actix_web::{web, HttpRequest, HttpResponse};
-use chrono::SecondsFormat;

-use meilisearch_auth::{Action, AuthController, Key};
+use meilisearch_auth::{error::AuthControllerError, Action, AuthController, Key};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
+use time::OffsetDateTime;

-use crate::extractors::authentication::{policies::*, GuardedData};
-use meilisearch_error::ResponseError;
+use crate::extractors::{
+    authentication::{policies::*, GuardedData},
+    sequential_extractor::SeqHandler,
+};
+use meilisearch_error::{Code, ResponseError};

 pub fn configure(cfg: &mut web::ServiceConfig) {
    cfg.service(
        web::resource("")
-            .route(web::post().to(create_api_key))
-            .route(web::get().to(list_api_keys)),
+            .route(web::post().to(SeqHandler(create_api_key)))
+            .route(web::get().to(SeqHandler(list_api_keys))),
    )
    .service(
        web::resource("/{api_key}")
-            .route(web::get().to(get_api_key))
-            .route(web::patch().to(patch_api_key))
-            .route(web::delete().to(delete_api_key)),
+            .route(web::get().to(SeqHandler(get_api_key)))
+            .route(web::patch().to(SeqHandler(patch_api_key)))
+            .route(web::delete().to(SeqHandler(delete_api_key))),
    );
 }

@ -29,8 +32,13 @@ pub async fn create_api_key(
    body: web::Json<Value>,
    _req: HttpRequest,
 ) -> Result<HttpResponse, ResponseError> {
-    let key = auth_controller.create_key(body.into_inner()).await?;
-    let res = KeyView::from_key(key, &auth_controller);
+    let v = body.into_inner();
+    let res = tokio::task::spawn_blocking(move || -> Result<_, AuthControllerError> {
+        let key = auth_controller.create_key(v)?;
+        Ok(KeyView::from_key(key, &auth_controller))
+    })
+    .await
+    .map_err(|e| ResponseError::from_msg(e.to_string(), Code::Internal))??;

    Ok(HttpResponse::Created().json(res))
 }
@ -39,11 +47,16 @@ pub async fn list_api_keys(
    auth_controller: GuardedData<MasterPolicy, AuthController>,
    _req: HttpRequest,
 ) -> Result<HttpResponse, ResponseError> {
-    let keys = auth_controller.list_keys().await?;
-    let res: Vec<_> = keys
-        .into_iter()
-        .map(|k| KeyView::from_key(k, &auth_controller))
-        .collect();
+    let res = tokio::task::spawn_blocking(move || -> Result<_, AuthControllerError> {
+        let keys = auth_controller.list_keys()?;
+        let res: Vec<_> = keys
+            .into_iter()
+            .map(|k| KeyView::from_key(k, &auth_controller))
+            .collect();
+        Ok(res)
+    })
+    .await
+    .map_err(|e| ResponseError::from_msg(e.to_string(), Code::Internal))??;

    Ok(HttpResponse::Ok().json(KeyListView::from(res)))
 }
@ -52,8 +65,13 @@ pub async fn get_api_key(
    auth_controller: GuardedData<MasterPolicy, AuthController>,
    path: web::Path<AuthParam>,
 ) -> Result<HttpResponse, ResponseError> {
-    let key = auth_controller.get_key(&path.api_key).await?;
-    let res = KeyView::from_key(key, &auth_controller);
+    let api_key = path.into_inner().api_key;
+    let res = tokio::task::spawn_blocking(move || -> Result<_, AuthControllerError> {
+        let key = auth_controller.get_key(&api_key)?;
+        Ok(KeyView::from_key(key, &auth_controller))
+    })
+    .await
+    .map_err(|e| ResponseError::from_msg(e.to_string(), Code::Internal))??;

    Ok(HttpResponse::Ok().json(res))
 }
@ -63,10 +81,14 @@ pub async fn patch_api_key(
    body: web::Json<Value>,
    path: web::Path<AuthParam>,
 ) -> Result<HttpResponse, ResponseError> {
-    let key = auth_controller
-        .update_key(&path.api_key, body.into_inner())
-        .await?;
-    let res = KeyView::from_key(key, &auth_controller);
+    let api_key = path.into_inner().api_key;
+    let body = body.into_inner();
+    let res = tokio::task::spawn_blocking(move || -> Result<_, AuthControllerError> {
+        let key = auth_controller.update_key(&api_key, body)?;
+        Ok(KeyView::from_key(key, &auth_controller))
+    })
+    .await
+    .map_err(|e| ResponseError::from_msg(e.to_string(), Code::Internal))??;

    Ok(HttpResponse::Ok().json(res))
 }
@ -75,7 +97,10 @@ pub async fn delete_api_key(
    auth_controller: GuardedData<MasterPolicy, AuthController>,
    path: web::Path<AuthParam>,
 ) -> Result<HttpResponse, ResponseError> {
-    auth_controller.delete_key(&path.api_key).await?;
+    let api_key = path.into_inner().api_key;
+    tokio::task::spawn_blocking(move || auth_controller.delete_key(&api_key))
+        .await
+        .map_err(|e| ResponseError::from_msg(e.to_string(), Code::Internal))??;

    Ok(HttpResponse::NoContent().finish())
 }
@ -92,9 +117,12 @@ struct KeyView {
    key: String,
    actions: Vec<Action>,
    indexes: Vec<String>,
-    expires_at: Option<String>,
-    created_at: String,
-    updated_at: String,
+    #[serde(serialize_with = "time::serde::rfc3339::option::serialize")]
+    expires_at: Option<OffsetDateTime>,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    created_at: OffsetDateTime,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    updated_at: OffsetDateTime,
 }

 impl KeyView {
@ -107,11 +135,9 @@ impl KeyView {
            key: generated_key,
            actions: key.actions,
            indexes: key.indexes,
-            expires_at: key
-                .expires_at
-                .map(|dt| dt.to_rfc3339_opts(SecondsFormat::Secs, true)),
-            created_at: key.created_at.to_rfc3339_opts(SecondsFormat::Secs, true),
-            updated_at: key.updated_at.to_rfc3339_opts(SecondsFormat::Secs, true),
+            expires_at: key.expires_at,
+            created_at: key.created_at,
+            updated_at: key.updated_at,
        }
    }
 }
--- a/meilisearch-http/src/routes/dump.rs
+++ b/meilisearch-http/src/routes/dump.rs
@ -7,10 +7,13 @@ use serde_json::json;

 use crate::analytics::Analytics;
 use crate::extractors::authentication::{policies::*, GuardedData};
+use crate::extractors::sequential_extractor::SeqHandler;

 pub fn configure(cfg: &mut web::ServiceConfig) {
-    cfg.service(web::resource("").route(web::post().to(create_dump)))
-        .service(web::resource("/{dump_uid}/status").route(web::get().to(get_dump_status)));
+    cfg.service(web::resource("").route(web::post().to(SeqHandler(create_dump))))
+        .service(
+            web::resource("/{dump_uid}/status").route(web::get().to(SeqHandler(get_dump_status))),
+        );
 }

 pub async fn create_dump(
--- a/meilisearch-http/src/routes/indexes/documents.rs
+++ b/meilisearch-http/src/routes/indexes/documents.rs
@ -20,6 +20,7 @@ use crate::analytics::Analytics;
 use crate::error::MeilisearchHttpError;
 use crate::extractors::authentication::{policies::*, GuardedData};
 use crate::extractors::payload::Payload;
+use crate::extractors::sequential_extractor::SeqHandler;
 use crate::task::SummarizedTaskView;

 const DEFAULT_RETRIEVE_DOCUMENTS_OFFSET: usize = 0;
@ -71,17 +72,17 @@ pub struct DocumentParam {
 pub fn configure(cfg: &mut web::ServiceConfig) {
    cfg.service(
        web::resource("")
-            .route(web::get().to(get_all_documents))
-            .route(web::post().to(add_documents))
-            .route(web::put().to(update_documents))
-            .route(web::delete().to(clear_all_documents)),
+            .route(web::get().to(SeqHandler(get_all_documents)))
+            .route(web::post().to(SeqHandler(add_documents)))
+            .route(web::put().to(SeqHandler(update_documents)))
+            .route(web::delete().to(SeqHandler(clear_all_documents))),
    )
    // this route needs to be before the /documents/{document_id} to match properly
-    .service(web::resource("/delete-batch").route(web::post().to(delete_documents)))
+    .service(web::resource("/delete-batch").route(web::post().to(SeqHandler(delete_documents))))
    .service(
        web::resource("/{document_id}")
-            .route(web::get().to(get_document))
-            .route(web::delete().to(delete_document)),
+            .route(web::get().to(SeqHandler(get_document)))
+            .route(web::delete().to(SeqHandler(delete_document))),
    );
 }

--- a/meilisearch-http/src/routes/indexes/mod.rs
+++ b/meilisearch-http/src/routes/indexes/mod.rs
@ -1,14 +1,15 @@
 use actix_web::{web, HttpRequest, HttpResponse};
-use chrono::{DateTime, Utc};
 use log::debug;
 use meilisearch_error::ResponseError;
 use meilisearch_lib::index_controller::Update;
 use meilisearch_lib::MeiliSearch;
 use serde::{Deserialize, Serialize};
 use serde_json::json;
+use time::OffsetDateTime;

 use crate::analytics::Analytics;
 use crate::extractors::authentication::{policies::*, GuardedData};
+use crate::extractors::sequential_extractor::SeqHandler;
 use crate::task::SummarizedTaskView;

 pub mod documents;
@ -20,17 +21,17 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
    cfg.service(
        web::resource("")
            .route(web::get().to(list_indexes))
-            .route(web::post().to(create_index)),
+            .route(web::post().to(SeqHandler(create_index))),
    )
    .service(
        web::scope("/{index_uid}")
            .service(
                web::resource("")
-                    .route(web::get().to(get_index))
-                    .route(web::put().to(update_index))
-                    .route(web::delete().to(delete_index)),
+                    .route(web::get().to(SeqHandler(get_index)))
+                    .route(web::put().to(SeqHandler(update_index)))
+                    .route(web::delete().to(SeqHandler(delete_index))),
            )
-            .service(web::resource("/stats").route(web::get().to(get_index_stats)))
+            .service(web::resource("/stats").route(web::get().to(SeqHandler(get_index_stats))))
            .service(web::scope("/documents").configure(documents::configure))
            .service(web::scope("/search").configure(search::configure))
            .service(web::scope("/tasks").configure(tasks::configure))
@ -95,9 +96,12 @@ pub struct UpdateIndexRequest {
 pub struct UpdateIndexResponse {
    name: String,
    uid: String,
-    created_at: DateTime<Utc>,
-    updated_at: DateTime<Utc>,
-    primary_key: Option<String>,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    created_at: OffsetDateTime,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    updated_at: OffsetDateTime,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    primary_key: OffsetDateTime,
 }

 pub async fn get_index(
--- a/meilisearch-http/src/routes/indexes/search.rs
+++ b/meilisearch-http/src/routes/indexes/search.rs
@ -9,12 +9,13 @@ use serde_json::Value;

 use crate::analytics::{Analytics, SearchAggregator};
 use crate::extractors::authentication::{policies::*, GuardedData};
+use crate::extractors::sequential_extractor::SeqHandler;

 pub fn configure(cfg: &mut web::ServiceConfig) {
    cfg.service(
        web::resource("")
-            .route(web::get().to(search_with_url_query))
-            .route(web::post().to(search_with_post)),
+            .route(web::get().to(SeqHandler(search_with_url_query)))
+            .route(web::post().to(SeqHandler(search_with_post))),
    );
 }

--- a/meilisearch-http/src/routes/indexes/settings.rs
+++ b/meilisearch-http/src/routes/indexes/settings.rs
@ -23,6 +23,7 @@ macro_rules! make_setting_route {

            use crate::analytics::Analytics;
            use crate::extractors::authentication::{policies::*, GuardedData};
+            use crate::extractors::sequential_extractor::SeqHandler;
            use crate::task::SummarizedTaskView;
            use meilisearch_error::ResponseError;

@ -98,9 +99,9 @@ macro_rules! make_setting_route {

            pub fn resources() -> Resource {
                Resource::new($route)
-                    .route(web::get().to(get))
-                    .route(web::post().to(update))
-                    .route(web::delete().to(delete))
+                    .route(web::get().to(SeqHandler(get)))
+                    .route(web::post().to(SeqHandler(update)))
+                    .route(web::delete().to(SeqHandler(delete)))
            }
        }
    };
@ -226,11 +227,12 @@ make_setting_route!(
 macro_rules! generate_configure {
    ($($mod:ident),*) => {
        pub fn configure(cfg: &mut web::ServiceConfig) {
+            use crate::extractors::sequential_extractor::SeqHandler;
            cfg.service(
                web::resource("")
-                .route(web::post().to(update_all))
-                .route(web::get().to(get_all))
-                .route(web::delete().to(delete_all)))
+                .route(web::post().to(SeqHandler(update_all)))
+                .route(web::get().to(SeqHandler(get_all)))
+                .route(web::delete().to(SeqHandler(delete_all))))
                $(.service($mod::resources()))*;
        }
    };
--- a/meilisearch-http/src/routes/indexes/tasks.rs
+++ b/meilisearch-http/src/routes/indexes/tasks.rs
@ -1,18 +1,19 @@
 use actix_web::{web, HttpRequest, HttpResponse};
-use chrono::{DateTime, Utc};
 use log::debug;
 use meilisearch_error::ResponseError;
 use meilisearch_lib::MeiliSearch;
 use serde::{Deserialize, Serialize};
 use serde_json::json;
+use time::OffsetDateTime;

 use crate::analytics::Analytics;
 use crate::extractors::authentication::{policies::*, GuardedData};
+use crate::extractors::sequential_extractor::SeqHandler;
 use crate::task::{TaskListView, TaskView};

 pub fn configure(cfg: &mut web::ServiceConfig) {
-    cfg.service(web::resource("").route(web::get().to(get_all_tasks_status)))
-        .service(web::resource("{task_id}").route(web::get().to(get_task_status)));
+    cfg.service(web::resource("").route(web::get().to(SeqHandler(get_all_tasks_status))))
+        .service(web::resource("{task_id}").route(web::get().to(SeqHandler(get_task_status))));
 }

 #[derive(Debug, Serialize)]
@ -20,9 +21,12 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
 pub struct UpdateIndexResponse {
    name: String,
    uid: String,
-    created_at: DateTime<Utc>,
-    updated_at: DateTime<Utc>,
-    primary_key: Option<String>,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    created_at: OffsetDateTime,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    updated_at: OffsetDateTime,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    primary_key: OffsetDateTime,
 }

 #[derive(Deserialize)]
--- a/meilisearch-http/src/routes/mod.rs
+++ b/meilisearch-http/src/routes/mod.rs
@ -1,7 +1,7 @@
 use actix_web::{web, HttpResponse};
-use chrono::{DateTime, Utc};
 use log::debug;
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;

 use meilisearch_error::ResponseError;
 use meilisearch_lib::index::{Settings, Unchecked};
@ -54,8 +54,10 @@ pub struct ProcessedUpdateResult {
    #[serde(rename = "type")]
    pub update_type: UpdateType,
    pub duration: f64, // in seconds
-    pub enqueued_at: DateTime<Utc>,
-    pub processed_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub enqueued_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub processed_at: OffsetDateTime,
 }

 #[derive(Debug, Clone, Serialize, Deserialize)]
@ -66,8 +68,10 @@ pub struct FailedUpdateResult {
    pub update_type: UpdateType,
    pub error: ResponseError,
    pub duration: f64, // in seconds
-    pub enqueued_at: DateTime<Utc>,
-    pub processed_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub enqueued_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub processed_at: OffsetDateTime,
 }

 #[derive(Debug, Clone, Serialize, Deserialize)]
@ -76,9 +80,13 @@ pub struct EnqueuedUpdateResult {
    pub update_id: u64,
    #[serde(rename = "type")]
    pub update_type: UpdateType,
-    pub enqueued_at: DateTime<Utc>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    pub started_processing_at: Option<DateTime<Utc>>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub enqueued_at: OffsetDateTime,
+    #[serde(
+        skip_serializing_if = "Option::is_none",
+        with = "time::serde::rfc3339::option"
+    )]
+    pub started_processing_at: Option<OffsetDateTime>,
 }

 #[derive(Debug, Clone, Serialize, Deserialize)]
--- a/meilisearch-http/src/routes/tasks.rs
+++ b/meilisearch-http/src/routes/tasks.rs
@ -7,11 +7,12 @@ use serde_json::json;

 use crate::analytics::Analytics;
 use crate::extractors::authentication::{policies::*, GuardedData};
+use crate::extractors::sequential_extractor::SeqHandler;
 use crate::task::{TaskListView, TaskView};

 pub fn configure(cfg: &mut web::ServiceConfig) {
-    cfg.service(web::resource("").route(web::get().to(get_tasks)))
-        .service(web::resource("/{task_id}").route(web::get().to(get_task)));
+    cfg.service(web::resource("").route(web::get().to(SeqHandler(get_tasks))))
+        .service(web::resource("/{task_id}").route(web::get().to(SeqHandler(get_task))));
 }

 async fn get_tasks(
--- a/meilisearch-http/src/task.rs
+++ b/meilisearch-http/src/task.rs
@ -1,4 +1,6 @@
-use chrono::{DateTime, Duration, Utc};
+use std::fmt::Write;
+use std::write;
+
 use meilisearch_error::ResponseError;
 use meilisearch_lib::index::{Settings, Unchecked};
 use meilisearch_lib::milli::update::IndexDocumentsMethod;
@ -7,6 +9,7 @@ use meilisearch_lib::tasks::task::{
    DocumentDeletion, Task, TaskContent, TaskEvent, TaskId, TaskResult,
 };
 use serde::{Serialize, Serializer};
+use time::{Duration, OffsetDateTime};

 use crate::AUTOBATCHING_ENABLED;

@ -79,14 +82,52 @@ enum TaskDetails {
    ClearAll { deleted_documents: Option<u64> },
 }

+/// Serialize a `time::Duration` as a best effort ISO 8601 while waiting for
+/// https://github.com/time-rs/time/issues/378.
+/// This code is a port of the old code of time that was removed in 0.2.
 fn serialize_duration<S: Serializer>(
    duration: &Option<Duration>,
    serializer: S,
 ) -> Result<S::Ok, S::Error> {
    match duration {
        Some(duration) => {
-            let duration_str = duration.to_string();
-            serializer.serialize_str(&duration_str)
+            // technically speaking, negative duration is not valid ISO 8601
+            if duration.is_negative() {
+                return serializer.serialize_none();
+            }
+
+            const SECS_PER_DAY: i64 = Duration::DAY.whole_seconds();
+            let secs = duration.whole_seconds();
+            let days = secs / SECS_PER_DAY;
+            let secs = secs - days * SECS_PER_DAY;
+            let hasdate = days != 0;
+            let nanos = duration.subsec_nanoseconds();
+            let hastime = (secs != 0 || nanos != 0) || !hasdate;
+
+            // all the following unwrap can't fail
+            let mut res = String::new();
+            write!(&mut res, "P").unwrap();
+
+            if hasdate {
+                write!(&mut res, "{}D", days).unwrap();
+            }
+
+            const NANOS_PER_MILLI: i32 = Duration::MILLISECOND.subsec_nanoseconds();
+            const NANOS_PER_MICRO: i32 = Duration::MICROSECOND.subsec_nanoseconds();
+
+            if hastime {
+                if nanos == 0 {
+                    write!(&mut res, "T{}S", secs).unwrap();
+                } else if nanos % NANOS_PER_MILLI == 0 {
+                    write!(&mut res, "T{}.{:03}S", secs, nanos / NANOS_PER_MILLI).unwrap();
+                } else if nanos % NANOS_PER_MICRO == 0 {
+                    write!(&mut res, "T{}.{:06}S", secs, nanos / NANOS_PER_MICRO).unwrap();
+                } else {
+                    write!(&mut res, "T{}.{:09}S", secs, nanos).unwrap();
+                }
+            }
+
+            serializer.serialize_str(&res)
        }
        None => serializer.serialize_none(),
    }
@ -106,9 +147,12 @@ pub struct TaskView {
    error: Option<ResponseError>,
    #[serde(serialize_with = "serialize_duration")]
    duration: Option<Duration>,
-    enqueued_at: DateTime<Utc>,
-    started_at: Option<DateTime<Utc>>,
-    finished_at: Option<DateTime<Utc>>,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    enqueued_at: OffsetDateTime,
+    #[serde(serialize_with = "time::serde::rfc3339::option::serialize")]
+    started_at: Option<OffsetDateTime>,
+    #[serde(serialize_with = "time::serde::rfc3339::option::serialize")]
+    finished_at: Option<OffsetDateTime>,
    #[serde(skip_serializing_if = "Option::is_none")]
    batch_uid: Option<Option<BatchId>>,
 }
@ -302,7 +346,8 @@ pub struct SummarizedTaskView {
    status: TaskStatus,
    #[serde(rename = "type")]
    task_type: TaskType,
-    enqueued_at: DateTime<Utc>,
+    #[serde(serialize_with = "time::serde::rfc3339::serialize")]
+    enqueued_at: OffsetDateTime,
 }

 impl From<Task> for SummarizedTaskView {
--- a/meilisearch-http/tests/auth/api_keys.rs
+++ b/meilisearch-http/tests/auth/api_keys.rs
@ -257,7 +257,7 @@ async fn error_add_api_key_missing_parameter() {
        "message": "`indexes` field is mandatory.",
        "code": "missing_parameter",
        "type": "invalid_request",
-        "link":"https://docs.meilisearch.com/errors#missing_parameter"
+        "link": "https://docs.meilisearch.com/errors#missing_parameter"
    });

    assert_eq!(response, expected_response);
@ -275,7 +275,7 @@ async fn error_add_api_key_missing_parameter() {
        "message": "`actions` field is mandatory.",
        "code": "missing_parameter",
        "type": "invalid_request",
-        "link":"https://docs.meilisearch.com/errors#missing_parameter"
+        "link": "https://docs.meilisearch.com/errors#missing_parameter"
    });

    assert_eq!(response, expected_response);
@ -293,7 +293,7 @@ async fn error_add_api_key_missing_parameter() {
        "message": "`expiresAt` field is mandatory.",
        "code": "missing_parameter",
        "type": "invalid_request",
-        "link":"https://docs.meilisearch.com/errors#missing_parameter"
+        "link": "https://docs.meilisearch.com/errors#missing_parameter"
    });

    assert_eq!(response, expected_response);
@ -316,7 +316,7 @@ async fn error_add_api_key_invalid_parameters_description() {
    let (response, code) = server.add_api_key(content).await;

    let expected_response = json!({
-        "message": r#"description field value `{"name":"products"}` is invalid. It should be a string or specified as a null value."#,
+        "message": r#"`description` field value `{"name":"products"}` is invalid. It should be a string or specified as a null value."#,
        "code": "invalid_api_key_description",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_description"
@ -342,7 +342,7 @@ async fn error_add_api_key_invalid_parameters_indexes() {
    let (response, code) = server.add_api_key(content).await;

    let expected_response = json!({
-        "message": r#"indexes field value `{"name":"products"}` is invalid. It should be an array of string representing index names."#,
+        "message": r#"`indexes` field value `{"name":"products"}` is invalid. It should be an array of string representing index names."#,
        "code": "invalid_api_key_indexes",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_indexes"
@ -366,7 +366,7 @@ async fn error_add_api_key_invalid_parameters_actions() {
    let (response, code) = server.add_api_key(content).await;

    let expected_response = json!({
-        "message": r#"actions field value `{"name":"products"}` is invalid. It should be an array of string representing action names."#,
+        "message": r#"`actions` field value `{"name":"products"}` is invalid. It should be an array of string representing action names."#,
        "code": "invalid_api_key_actions",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_actions"
@ -386,7 +386,7 @@ async fn error_add_api_key_invalid_parameters_actions() {
    let (response, code) = server.add_api_key(content).await;

    let expected_response = json!({
-        "message": r#"actions field value `["doc.add"]` is invalid. It should be an array of string representing action names."#,
+        "message": r#"`actions` field value `["doc.add"]` is invalid. It should be an array of string representing action names."#,
        "code": "invalid_api_key_actions",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_actions"
@ -412,7 +412,7 @@ async fn error_add_api_key_invalid_parameters_expires_at() {
    let (response, code) = server.add_api_key(content).await;

    let expected_response = json!({
-        "message": r#"expiresAt field value `{"name":"products"}` is invalid. It should be in ISO-8601 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DDTHH:MM:SS'."#,
+        "message": r#"`expiresAt` field value `{"name":"products"}` is invalid. It should follow the RFC 3339 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DD HH:MM:SS'."#,
        "code": "invalid_api_key_expires_at",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_expires_at"
@ -438,7 +438,7 @@ async fn error_add_api_key_invalid_parameters_expires_at_in_the_past() {
    let (response, code) = server.add_api_key(content).await;

    let expected_response = json!({
-        "message": r#"expiresAt field value `"2010-11-13T00:00:00Z"` is invalid. It should be in ISO-8601 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DDTHH:MM:SS'."#,
+        "message": r#"`expiresAt` field value `"2010-11-13T00:00:00Z"` is invalid. It should follow the RFC 3339 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DD HH:MM:SS'."#,
        "code": "invalid_api_key_expires_at",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_expires_at"
@ -1213,7 +1213,7 @@ async fn error_patch_api_key_indexes_invalid_parameters() {
    let (response, code) = server.patch_api_key(&key, content).await;

    let expected_response = json!({
-        "message": "description field value `13` is invalid. It should be a string or specified as a null value.",
+        "message": "`description` field value `13` is invalid. It should be a string or specified as a null value.",
        "code": "invalid_api_key_description",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_description"
@ -1230,7 +1230,7 @@ async fn error_patch_api_key_indexes_invalid_parameters() {
    let (response, code) = server.patch_api_key(&key, content).await;

    let expected_response = json!({
-        "message": "indexes field value `13` is invalid. It should be an array of string representing index names.",
+        "message": "`indexes` field value `13` is invalid. It should be an array of string representing index names.",
        "code": "invalid_api_key_indexes",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_indexes"
@ -1246,7 +1246,7 @@ async fn error_patch_api_key_indexes_invalid_parameters() {
    let (response, code) = server.patch_api_key(&key, content).await;

    let expected_response = json!({
-        "message": "actions field value `13` is invalid. It should be an array of string representing action names.",
+        "message": "`actions` field value `13` is invalid. It should be an array of string representing action names.",
        "code": "invalid_api_key_actions",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_actions"
@ -1262,7 +1262,7 @@ async fn error_patch_api_key_indexes_invalid_parameters() {
    let (response, code) = server.patch_api_key(&key, content).await;

    let expected_response = json!({
-        "message": "expiresAt field value `13` is invalid. It should be in ISO-8601 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DDTHH:MM:SS'.",
+        "message": "`expiresAt` field value `13` is invalid. It should follow the RFC 3339 format to represents a date or datetime in the future or specified as a null value. e.g. 'YYYY-MM-DD' or 'YYYY-MM-DD HH:MM:SS'.",
        "code": "invalid_api_key_expires_at",
        "type": "invalid_request",
        "link": "https://docs.meilisearch.com/errors#invalid_api_key_expires_at"
--- a/meilisearch-http/tests/auth/authorization.rs
+++ b/meilisearch-http/tests/auth/authorization.rs
@ -1,9 +1,10 @@
 use crate::common::Server;
-use chrono::{Duration, Utc};
+use ::time::format_description::well_known::Rfc3339;
 use maplit::{hashmap, hashset};
 use once_cell::sync::Lazy;
 use serde_json::{json, Value};
 use std::collections::{HashMap, HashSet};
+use time::{Duration, OffsetDateTime};

 pub static AUTHORIZATIONS: Lazy<HashMap<(&'static str, &'static str), HashSet<&'static str>>> =
    Lazy::new(|| {
@ -76,7 +77,7 @@ async fn error_access_expired_key() {
    let content = json!({
        "indexes": ["products"],
        "actions": ALL_ACTIONS.clone(),
-        "expiresAt": (Utc::now() + Duration::seconds(1)),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::seconds(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -106,7 +107,7 @@ async fn error_access_unauthorized_index() {
    let content = json!({
        "indexes": ["sales"],
        "actions": ALL_ACTIONS.clone(),
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -137,7 +138,7 @@ async fn error_access_unauthorized_action() {
    let content = json!({
        "indexes": ["products"],
        "actions": [],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -174,7 +175,7 @@ async fn access_authorized_restricted_index() {
    let content = json!({
        "indexes": ["products"],
        "actions": [],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -213,7 +214,7 @@ async fn access_authorized_no_index_restriction() {
    let content = json!({
        "indexes": ["*"],
        "actions": [],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -263,7 +264,7 @@ async fn access_authorized_stats_restricted_index() {
    let content = json!({
        "indexes": ["products"],
        "actions": ["stats.get"],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });
    let (response, code) = server.add_api_key(content).await;
    assert_eq!(code, 201);
@ -303,7 +304,7 @@ async fn access_authorized_stats_no_index_restriction() {
    let content = json!({
        "indexes": ["*"],
        "actions": ["stats.get"],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });
    let (response, code) = server.add_api_key(content).await;
    assert_eq!(code, 201);
@ -343,7 +344,7 @@ async fn list_authorized_indexes_restricted_index() {
    let content = json!({
        "indexes": ["products"],
        "actions": ["indexes.get"],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });
    let (response, code) = server.add_api_key(content).await;
    assert_eq!(code, 201);
@ -384,7 +385,7 @@ async fn list_authorized_indexes_no_index_restriction() {
    let content = json!({
        "indexes": ["*"],
        "actions": ["indexes.get"],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });
    let (response, code) = server.add_api_key(content).await;
    assert_eq!(code, 201);
@ -424,7 +425,7 @@ async fn list_authorized_tasks_restricted_index() {
    let content = json!({
        "indexes": ["products"],
        "actions": ["tasks.get"],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });
    let (response, code) = server.add_api_key(content).await;
    assert_eq!(code, 201);
@ -464,7 +465,7 @@ async fn list_authorized_tasks_no_index_restriction() {
    let content = json!({
        "indexes": ["*"],
        "actions": ["tasks.get"],
-        "expiresAt": Utc::now() + Duration::hours(1),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });
    let (response, code) = server.add_api_key(content).await;
    assert_eq!(code, 201);
--- a/meilisearch-http/tests/auth/tenant_token.rs
+++ b/meilisearch-http/tests/auth/tenant_token.rs
@ -1,9 +1,10 @@
 use crate::common::Server;
-use chrono::{Duration, Utc};
+use ::time::format_description::well_known::Rfc3339;
 use maplit::hashmap;
 use once_cell::sync::Lazy;
 use serde_json::{json, Value};
 use std::collections::HashMap;
+use time::{Duration, OffsetDateTime};

 use super::authorization::{ALL_ACTIONS, AUTHORIZATIONS};

@ -63,22 +64,22 @@ static ACCEPTED_KEYS: Lazy<Vec<Value>> = Lazy::new(|| {
        json!({
            "indexes": ["*"],
            "actions": ["*"],
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
        json!({
            "indexes": ["*"],
            "actions": ["search"],
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
        json!({
            "indexes": ["sales"],
            "actions": ["*"],
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
        json!({
            "indexes": ["sales"],
            "actions": ["search"],
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
    ]
 });
@ -89,23 +90,23 @@ static REFUSED_KEYS: Lazy<Vec<Value>> = Lazy::new(|| {
        json!({
            "indexes": ["*"],
            "actions": ALL_ACTIONS.iter().cloned().filter(|a| *a != "search" && *a != "*").collect::<Vec<_>>(),
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
        json!({
            "indexes": ["sales"],
            "actions": ALL_ACTIONS.iter().cloned().filter(|a| *a != "search" && *a != "*").collect::<Vec<_>>(),
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
        // bad index
        json!({
            "indexes": ["products"],
            "actions": ["*"],
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
        json!({
            "indexes": ["products"],
            "actions": ["search"],
-            "expiresAt": Utc::now() + Duration::days(1)
+            "expiresAt": (OffsetDateTime::now_utc() + Duration::days(1)).format(&Rfc3339).unwrap()
        }),
    ]
 });
@ -204,19 +205,19 @@ async fn search_authorized_simple_token() {
    let tenant_tokens = vec![
        hashmap! {
            "searchRules" => json!({"*": {}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["*"]),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["sales"]),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"*": {}}),
@ -253,19 +254,19 @@ async fn search_authorized_filter_token() {
    let tenant_tokens = vec![
        hashmap! {
            "searchRules" => json!({"*": {"filter": "color = blue"}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {"filter": "color = blue"}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"*": {"filter": ["color = blue"]}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {"filter": ["color = blue"]}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        // filter on sales should override filters on *
        hashmap! {
@ -273,28 +274,28 @@ async fn search_authorized_filter_token() {
                "*": {"filter": "color = green"},
                "sales": {"filter": "color = blue"}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({
                "*": {},
                "sales": {"filter": "color = blue"}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({
                "*": {"filter": "color = green"},
                "sales": {"filter": ["color = blue"]}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({
                "*": {},
                "sales": {"filter": ["color = blue"]}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
    ];

@ -307,19 +308,19 @@ async fn filter_search_authorized_filter_token() {
    let tenant_tokens = vec![
        hashmap! {
            "searchRules" => json!({"*": {"filter": "color = blue"}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {"filter": "color = blue"}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"*": {"filter": ["color = blue"]}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {"filter": ["color = blue"]}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        // filter on sales should override filters on *
        hashmap! {
@ -327,28 +328,28 @@ async fn filter_search_authorized_filter_token() {
                "*": {"filter": "color = green"},
                "sales": {"filter": "color = blue"}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({
                "*": {},
                "sales": {"filter": "color = blue"}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({
                "*": {"filter": "color = green"},
                "sales": {"filter": ["color = blue"]}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({
                "*": {},
                "sales": {"filter": ["color = blue"]}
            }),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
    ];

@ -361,27 +362,27 @@ async fn error_search_token_forbidden_parent_key() {
    let tenant_tokens = vec![
        hashmap! {
            "searchRules" => json!({"*": {}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"*": Value::Null}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["*"]),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": Value::Null}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["sales"]),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
    ];

@ -395,11 +396,11 @@ async fn error_search_forbidden_token() {
        // bad index
        hashmap! {
            "searchRules" => json!({"products": {}}),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["products"]),
-            "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"products": {}}),
@ -416,27 +417,27 @@ async fn error_search_forbidden_token() {
        // expired token
        hashmap! {
            "searchRules" => json!({"*": {}}),
-            "exp" => json!((Utc::now() - Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"*": Value::Null}),
-            "exp" => json!((Utc::now() - Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["*"]),
-            "exp" => json!((Utc::now() - Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": {}}),
-            "exp" => json!((Utc::now() - Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!({"sales": Value::Null}),
-            "exp" => json!((Utc::now() - Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
        },
        hashmap! {
            "searchRules" => json!(["sales"]),
-            "exp" => json!((Utc::now() - Duration::hours(1)).timestamp())
+            "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
        },
    ];

@ -452,7 +453,7 @@ async fn error_access_forbidden_routes() {
    let content = json!({
        "indexes": ["*"],
        "actions": ["*"],
-        "expiresAt": (Utc::now() + Duration::hours(1)),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -463,7 +464,7 @@ async fn error_access_forbidden_routes() {

    let tenant_token = hashmap! {
        "searchRules" => json!(["*"]),
-        "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+        "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
    };
    let web_token = generate_tenant_token(&key, tenant_token);
    server.use_api_key(&web_token);
@ -487,7 +488,7 @@ async fn error_access_expired_parent_key() {
    let content = json!({
        "indexes": ["*"],
        "actions": ["*"],
-        "expiresAt": (Utc::now() + Duration::seconds(1)),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::seconds(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -498,7 +499,7 @@ async fn error_access_expired_parent_key() {

    let tenant_token = hashmap! {
        "searchRules" => json!(["*"]),
-        "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+        "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
    };
    let web_token = generate_tenant_token(&key, tenant_token);
    server.use_api_key(&web_token);
@ -529,7 +530,7 @@ async fn error_access_modified_token() {
    let content = json!({
        "indexes": ["*"],
        "actions": ["*"],
-        "expiresAt": (Utc::now() + Duration::hours(1)),
+        "expiresAt": (OffsetDateTime::now_utc() + Duration::hours(1)).format(&Rfc3339).unwrap(),
    });

    let (response, code) = server.add_api_key(content).await;
@ -540,7 +541,7 @@ async fn error_access_modified_token() {

    let tenant_token = hashmap! {
        "searchRules" => json!(["products"]),
-        "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+        "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
    };
    let web_token = generate_tenant_token(&key, tenant_token);
    server.use_api_key(&web_token);
@ -554,7 +555,7 @@ async fn error_access_modified_token() {

    let tenant_token = hashmap! {
        "searchRules" => json!(["*"]),
-        "exp" => json!((Utc::now() + Duration::hours(1)).timestamp())
+        "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
    };

    let alt = generate_tenant_token(&key, tenant_token);
--- a/meilisearch-http/tests/documents/add_documents.rs
+++ b/meilisearch-http/tests/documents/add_documents.rs
@ -1,8 +1,8 @@
 use crate::common::{GetAllDocumentsOptions, Server};
 use actix_web::test;
-use chrono::DateTime;
 use meilisearch_http::{analytics, create_app};
 use serde_json::{json, Value};
+use time::{format_description::well_known::Rfc3339, OffsetDateTime};

 /// This is the basic usage of our API and every other tests uses the content-type application/json
 #[actix_rt::test]
@ -568,9 +568,9 @@ async fn add_documents_no_index_creation() {
    assert_eq!(response["details"]["indexedDocuments"], 1);

    let processed_at =
-        DateTime::parse_from_rfc3339(response["finishedAt"].as_str().unwrap()).unwrap();
+        OffsetDateTime::parse(response["finishedAt"].as_str().unwrap(), &Rfc3339).unwrap();
    let enqueued_at =
-        DateTime::parse_from_rfc3339(response["enqueuedAt"].as_str().unwrap()).unwrap();
+        OffsetDateTime::parse(response["enqueuedAt"].as_str().unwrap(), &Rfc3339).unwrap();
    assert!(processed_at > enqueued_at);

    // index was created, and primary key was infered.
--- a/meilisearch-http/tests/index/update_index.rs
+++ b/meilisearch-http/tests/index/update_index.rs
@ -1,6 +1,6 @@
 use crate::common::Server;
-use chrono::DateTime;
 use serde_json::json;
+use time::{format_description::well_known::Rfc3339, OffsetDateTime};

 #[actix_rt::test]
 async fn update_primary_key() {
@ -25,8 +25,10 @@ async fn update_primary_key() {
    assert!(response.get("createdAt").is_some());
    assert!(response.get("updatedAt").is_some());

-    let created_at = DateTime::parse_from_rfc3339(response["createdAt"].as_str().unwrap()).unwrap();
-    let updated_at = DateTime::parse_from_rfc3339(response["updatedAt"].as_str().unwrap()).unwrap();
+    let created_at =
+        OffsetDateTime::parse(response["createdAt"].as_str().unwrap(), &Rfc3339).unwrap();
+    let updated_at =
+        OffsetDateTime::parse(response["updatedAt"].as_str().unwrap(), &Rfc3339).unwrap();
    assert!(created_at < updated_at);

    assert_eq!(response["primaryKey"], "primary");
--- a/meilisearch-http/tests/stats/mod.rs
+++ b/meilisearch-http/tests/stats/mod.rs
@ -1,4 +1,5 @@
 use serde_json::json;
+use time::{format_description::well_known::Rfc3339, OffsetDateTime};

 use crate::common::Server;

@ -57,11 +58,15 @@ async fn stats() {

    index.wait_task(1).await;

+    let timestamp = OffsetDateTime::now_utc();
    let (response, code) = server.stats().await;

    assert_eq!(code, 200);
    assert!(response["databaseSize"].as_u64().unwrap() > 0);
-    assert!(response.get("lastUpdate").is_some());
+    let last_update =
+        OffsetDateTime::parse(response["lastUpdate"].as_str().unwrap(), &Rfc3339).unwrap();
+    assert!(last_update - timestamp < time::Duration::SECOND);
+
    assert_eq!(response["indexes"]["test"]["numberOfDocuments"], 2);
    assert!(response["indexes"]["test"]["isIndexing"] == false);
    assert_eq!(response["indexes"]["test"]["fieldDistribution"]["id"], 2);
--- a/meilisearch-http/tests/tasks/mod.rs
+++ b/meilisearch-http/tests/tasks/mod.rs
@ -1,6 +1,7 @@
 use crate::common::Server;
-use chrono::{DateTime, Utc};
 use serde_json::json;
+use time::format_description::well_known::Rfc3339;
+use time::OffsetDateTime;

 #[actix_rt::test]
 async fn error_get_task_unexisting_index() {
@ -98,7 +99,8 @@ macro_rules! assert_valid_summarized_task {
        assert_eq!($response["status"], "enqueued");
        assert_eq!($response["type"], $task_type);
        let date = $response["enqueuedAt"].as_str().expect("missing date");
-        date.parse::<DateTime<Utc>>().unwrap();
+
+        OffsetDateTime::parse(date, &Rfc3339).unwrap();
    }};
 }

--- a/meilisearch-lib/Cargo.toml
+++ b/meilisearch-lib/Cargo.toml
@ -6,62 +6,60 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
-actix-web = { version = "4", default-features = false }
-anyhow = { version = "1.0.43", features = ["backtrace"] }
-async-stream = "0.3.2"
-async-trait = "0.1.51"
-byte-unit = { version = "4.0.12", default-features = false, features = ["std"] }
+actix-web = { version = "4.0.1", default-features = false }
+anyhow = { version = "1.0.56", features = ["backtrace"] }
+async-stream = "0.3.3"
+async-trait = "0.1.52"
+atomic_refcell = "0.1.8"
+byte-unit = { version = "4.0.14", default-features = false, features = ["std"] }
 bytes = "1.1.0"
-chrono = { version = "0.4.19", features = ["serde"] }
+clap = { version = "3.1.6", features = ["derive", "env"] }
+crossbeam-channel = "0.5.2"
 csv = "1.1.6"
-crossbeam-channel = "0.5.1"
+derivative = "2.2.0"
 either = "1.6.1"
-flate2 = "1.0.21"
+flate2 = "1.0.22"
+fs_extra = "1.2.0"
 fst = "0.4.7"
-futures = "0.3.17"
-futures-util = "0.3.17"
-heed = { git = "https://github.com/Kerollmops/heed", tag = "v0.12.1" }
-http = "0.2.4"
-indexmap = { version = "1.7.0", features = ["serde-1"] }
-itertools = "0.10.1"
+futures = "0.3.21"
+futures-util = "0.3.21"
+http = "0.2.6"
+indexmap = { version = "1.8.0", features = ["serde-1"] }
+itertools = "0.10.3"
 lazy_static = "1.4.0"
 log = "0.4.14"
-meilisearch-error = { path = "../meilisearch-error" }
 meilisearch-auth = { path = "../meilisearch-auth" }
-milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.22.1" }
+meilisearch-error = { path = "../meilisearch-error" }
+milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.24.0" }
 mime = "0.3.16"
-num_cpus = "1.13.0"
-once_cell = "1.8.0"
-parking_lot = "0.11.2"
-rand = "0.8.4"
+num_cpus = "1.13.1"
+obkv = "0.2.0"
+once_cell = "1.10.0"
+parking_lot = "0.12.0"
+rand = "0.8.5"
 rayon = "1.5.1"
-regex = "1.5.4"
-rustls = "0.19.1"
-serde = { version = "1.0.130", features = ["derive"] }
-serde_json = { version = "1.0.67", features = ["preserve_order"] }
-siphasher = "0.3.7"
-slice-group-by = "0.2.6"
-clap = { version = "3.0", features = ["derive", "env"] }
-tar = "0.4.37"
-tempfile = "3.2.0"
-thiserror = "1.0.28"
-tokio = { version = "1.11.0", features = ["full"] }
+regex = "1.5.5"
+reqwest = { version = "0.11.9", features = ["json", "rustls-tls"], default-features = false, optional = true }
+rustls = "0.20.4"
+serde = { version = "1.0.136", features = ["derive"] }
+serde_json = { version = "1.0.79", features = ["preserve_order"] }
+siphasher = "0.3.10"
+slice-group-by = "0.3.0"
+sysinfo = "0.23.5"
+tar = "0.4.38"
+tempfile = "3.3.0"
+thiserror = "1.0.30"
+time = { version = "0.3.7", features = ["serde-well-known", "formatting", "parsing", "macros"] }
+tokio = { version = "1.17.0", features = ["full"] }
 uuid = { version = "0.8.2", features = ["serde"] }
 walkdir = "2.3.2"
-obkv = "0.2.0"
-pin-project = "1.0.8"
-whoami = { version = "1.1.3", optional = true }
-reqwest = { version = "0.11.4", features = ["json", "rustls-tls"], default-features = false, optional = true }
-sysinfo = "0.20.2"
-derivative = "2.2.0"
-fs_extra = "1.2.0"
-atomic_refcell = "0.1.8"
+whoami = { version = "1.2.1", optional = true }

 [dev-dependencies]
-actix-rt = "2.2.0"
-mockall = "0.10.2"
-paste = "1.0.5"
-nelson = { git = "https://github.com/MarinPostma/nelson.git", rev = "675f13885548fb415ead8fbb447e9e6d9314000a"}
+actix-rt = "2.7.0"
 meilisearch-error = { path = "../meilisearch-error", features = ["test-traits"] }
+mockall = "0.11.0"
+nelson = { git = "https://github.com/MarinPostma/nelson.git", rev = "675f13885548fb415ead8fbb447e9e6d9314000a"}
+paste = "1.0.6"
 proptest = "1.0.0"
 proptest-derive = "0.3.0"
--- a/meilisearch-lib/src/index/dump.rs
+++ b/meilisearch-lib/src/index/dump.rs
@ -3,9 +3,9 @@ use std::io::{BufReader, Seek, SeekFrom, Write};
 use std::path::Path;

 use anyhow::Context;
-use heed::{EnvOpenOptions, RoTxn};
 use indexmap::IndexMap;
 use milli::documents::DocumentBatchReader;
+use milli::heed::{EnvOpenOptions, RoTxn};
 use milli::update::{IndexDocumentsConfig, IndexerConfig};
 use serde::{Deserialize, Serialize};

--- a/meilisearch-lib/src/index/error.rs
+++ b/meilisearch-lib/src/index/error.rs
@ -21,7 +21,7 @@ pub enum IndexError {

 internal_error!(
    IndexError: std::io::Error,
-    heed::Error,
+    milli::heed::Error,
    fst::Error,
    serde_json::Error,
    update_file_store::UpdateFileStoreError,
--- a/meilisearch-lib/src/index/index.rs
+++ b/meilisearch-lib/src/index/index.rs
@ -5,12 +5,12 @@ use std::ops::Deref;
 use std::path::Path;
 use std::sync::Arc;

-use chrono::{DateTime, Utc};
-use heed::{EnvOpenOptions, RoTxn};
+use milli::heed::{EnvOpenOptions, RoTxn};
 use milli::update::{IndexerConfig, Setting};
 use milli::{obkv_to_json, FieldDistribution, FieldId};
 use serde::{Deserialize, Serialize};
 use serde_json::{Map, Value};
+use time::OffsetDateTime;
 use uuid::Uuid;

 use crate::EnvSizer;
@ -24,8 +24,10 @@ pub type Document = Map<String, Value>;
 #[derive(Debug, Serialize, Deserialize, Clone)]
 #[serde(rename_all = "camelCase")]
 pub struct IndexMeta {
-    pub created_at: DateTime<Utc>,
-    pub updated_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub created_at: OffsetDateTime,
+    #[serde(with = "time::serde::rfc3339")]
+    pub updated_at: OffsetDateTime,
    pub primary_key: Option<String>,
 }

@ -35,7 +37,7 @@ impl IndexMeta {
        Self::new_txn(index, &txn)
    }

-    pub fn new_txn(index: &Index, txn: &heed::RoTxn) -> Result<Self> {
+    pub fn new_txn(index: &Index, txn: &milli::heed::RoTxn) -> Result<Self> {
        let created_at = index.created_at(txn)?;
        let updated_at = index.updated_at(txn)?;
        let primary_key = index.primary_key(txn)?.map(String::from);
@ -248,7 +250,7 @@ impl Index {

    fn fields_to_display<S: AsRef<str>>(
        &self,
-        txn: &heed::RoTxn,
+        txn: &milli::heed::RoTxn,
        attributes_to_retrieve: &Option<Vec<S>>,
        fields_ids_map: &milli::FieldsIdsMap,
    ) -> Result<Vec<FieldId>> {
@ -276,7 +278,7 @@ impl Index {
        let _txn = self.write_txn()?;
        self.inner
            .env
-            .copy_to_path(dst, heed::CompactionOption::Enabled)?;
+            .copy_to_path(dst, milli::heed::CompactionOption::Enabled)?;
        Ok(())
    }
 }
--- a/meilisearch-lib/src/index/updates.rs
+++ b/meilisearch-lib/src/index/updates.rs
@ -176,7 +176,7 @@ pub struct Facets {
 impl Index {
    fn update_primary_key_txn<'a, 'b>(
        &'a self,
-        txn: &mut heed::RwTxn<'a, 'b>,
+        txn: &mut milli::heed::RwTxn<'a, 'b>,
        primary_key: String,
    ) -> Result<IndexMeta> {
        let mut builder = milli::update::Settings::new(txn, self, self.indexer_config.as_ref());
--- a/meilisearch-lib/src/index_controller/dump_actor/actor.rs
+++ b/meilisearch-lib/src/index_controller/dump_actor/actor.rs
@ -3,9 +3,10 @@ use std::path::{Path, PathBuf};
 use std::sync::Arc;

 use async_stream::stream;
-use chrono::Utc;
 use futures::{lock::Mutex, stream::StreamExt};
 use log::{error, trace};
+use time::macros::format_description;
+use time::OffsetDateTime;
 use tokio::sync::{mpsc, oneshot, RwLock};

 use super::error::{DumpActorError, Result};
@ -29,7 +30,11 @@ pub struct DumpActor {

 /// Generate uid from creation date
 fn generate_uid() -> String {
-    Utc::now().format("%Y%m%d-%H%M%S%3f").to_string()
+    OffsetDateTime::now_utc()
+        .format(format_description!(
+            "[year repr:full][month repr:numerical][day padding:zero]-[hour padding:zero][minute padding:zero][second padding:zero][subsecond digits:3]"
+        ))
+        .unwrap()
 }

 impl DumpActor {
@ -154,3 +159,33 @@ impl DumpActor {
        }
    }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_generate_uid() {
+        let current = OffsetDateTime::now_utc();
+
+        let uid = generate_uid();
+        let (date, time) = uid.split_once('-').unwrap();
+
+        let date = time::Date::parse(
+            date,
+            &format_description!("[year repr:full][month repr:numerical][day padding:zero]"),
+        )
+        .unwrap();
+        let time = time::Time::parse(
+            time,
+            &format_description!(
+                "[hour padding:zero][minute padding:zero][second padding:zero][subsecond digits:3]"
+            ),
+        )
+        .unwrap();
+        let datetime = time::PrimitiveDateTime::new(date, time);
+        let datetime = datetime.assume_utc();
+
+        assert!(current - datetime < time::Duration::SECOND);
+    }
+}
--- a/meilisearch-lib/src/index_controller/dump_actor/compat/v2.rs
+++ b/meilisearch-lib/src/index_controller/dump_actor/compat/v2.rs
@ -1,8 +1,8 @@
 use anyhow::bail;
-use chrono::{DateTime, Utc};
 use meilisearch_error::Code;
 use milli::update::IndexDocumentsMethod;
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;
 use uuid::Uuid;

 use crate::index::{Settings, Unchecked};
@ -51,7 +51,8 @@ pub enum UpdateMeta {
 pub struct Enqueued {
    pub update_id: u64,
    pub meta: UpdateMeta,
-    pub enqueued_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub enqueued_at: OffsetDateTime,
    pub content: Option<Uuid>,
 }

@ -59,7 +60,8 @@ pub struct Enqueued {
 #[serde(rename_all = "camelCase")]
 pub struct Processed {
    pub success: UpdateResult,
-    pub processed_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub processed_at: OffsetDateTime,
    #[serde(flatten)]
    pub from: Processing,
 }
@ -69,7 +71,8 @@ pub struct Processed {
 pub struct Processing {
    #[serde(flatten)]
    pub from: Enqueued,
-    pub started_processing_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub started_processing_at: OffsetDateTime,
 }

 #[derive(Debug, Serialize, Deserialize, Clone)]
@ -77,7 +80,8 @@ pub struct Processing {
 pub struct Aborted {
    #[serde(flatten)]
    pub from: Enqueued,
-    pub aborted_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub aborted_at: OffsetDateTime,
 }

 #[derive(Debug, Serialize, Deserialize)]
@ -86,7 +90,8 @@ pub struct Failed {
    #[serde(flatten)]
    pub from: Processing,
    pub error: ResponseError,
-    pub failed_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub failed_at: OffsetDateTime,
 }

 #[derive(Debug, Serialize, Deserialize)]
--- a/meilisearch-lib/src/index_controller/dump_actor/compat/v3.rs
+++ b/meilisearch-lib/src/index_controller/dump_actor/compat/v3.rs
@ -1,7 +1,7 @@
-use chrono::{DateTime, Utc};
 use meilisearch_error::{Code, ResponseError};
 use milli::update::IndexDocumentsMethod;
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;
 use uuid::Uuid;

 use crate::index::{Settings, Unchecked};
@ -107,7 +107,8 @@ pub enum UpdateMeta {
 pub struct Enqueued {
    pub update_id: u64,
    pub meta: Update,
-    pub enqueued_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub enqueued_at: OffsetDateTime,
 }

 impl Enqueued {
@ -122,7 +123,8 @@ impl Enqueued {
 #[serde(rename_all = "camelCase")]
 pub struct Processed {
    pub success: v2::UpdateResult,
-    pub processed_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub processed_at: OffsetDateTime,
    #[serde(flatten)]
    pub from: Processing,
 }
@ -144,7 +146,8 @@ impl Processed {
 pub struct Processing {
    #[serde(flatten)]
    pub from: Enqueued,
-    pub started_processing_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub started_processing_at: OffsetDateTime,
 }

 impl Processing {
@ -163,7 +166,8 @@ pub struct Failed {
    pub from: Processing,
    pub msg: String,
    pub code: Code,
-    pub failed_at: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    pub failed_at: OffsetDateTime,
 }

 impl Failed {
--- a/meilisearch-lib/src/index_controller/dump_actor/error.rs
+++ b/meilisearch-lib/src/index_controller/dump_actor/error.rs
@ -18,7 +18,7 @@ pub enum DumpActorError {
 }

 internal_error!(
-    DumpActorError: heed::Error,
+    DumpActorError: milli::heed::Error,
    std::io::Error,
    tokio::task::JoinError,
    tokio::sync::oneshot::error::RecvError,
--- a/meilisearch-lib/src/index_controller/dump_actor/loaders/v4.rs
+++ b/meilisearch-lib/src/index_controller/dump_actor/loaders/v4.rs
@ -1,9 +1,9 @@
 use std::path::Path;
 use std::sync::Arc;

-use heed::EnvOpenOptions;
 use log::info;
 use meilisearch_auth::AuthController;
+use milli::heed::EnvOpenOptions;

 use crate::analytics;
 use crate::index_controller::dump_actor::Metadata;
--- a/meilisearch-lib/src/index_controller/dump_actor/mod.rs
+++ b/meilisearch-lib/src/index_controller/dump_actor/mod.rs
@ -3,9 +3,9 @@ use std::path::{Path, PathBuf};
 use std::sync::Arc;

 use anyhow::bail;
-use chrono::{DateTime, Utc};
 use log::{info, trace};
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;

 pub use actor::DumpActor;
 pub use handle_impl::*;
@ -40,7 +40,8 @@ pub struct Metadata {
    db_version: String,
    index_db_size: usize,
    update_db_size: usize,
-    dump_date: DateTime<Utc>,
+    #[serde(with = "time::serde::rfc3339")]
+    dump_date: OffsetDateTime,
 }

 impl Metadata {
@ -49,7 +50,7 @@ impl Metadata {
            db_version: env!("CARGO_PKG_VERSION").to_string(),
            index_db_size,
            update_db_size,
-            dump_date: Utc::now(),
+            dump_date: OffsetDateTime::now_utc(),
        }
    }
 }
@ -144,7 +145,7 @@ impl MetadataVersion {
        }
    }

-    pub fn dump_date(&self) -> Option<&DateTime<Utc>> {
+    pub fn dump_date(&self) -> Option<&OffsetDateTime> {
        match self {
            MetadataVersion::V1(_) => None,
            MetadataVersion::V2(meta) | MetadataVersion::V3(meta) | MetadataVersion::V4(meta) => {
@ -169,9 +170,13 @@ pub struct DumpInfo {
    pub status: DumpStatus,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<String>,
-    started_at: DateTime<Utc>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    finished_at: Option<DateTime<Utc>>,
+    #[serde(with = "time::serde::rfc3339")]
+    started_at: OffsetDateTime,
+    #[serde(
+        skip_serializing_if = "Option::is_none",
+        with = "time::serde::rfc3339::option"
+    )]
+    finished_at: Option<OffsetDateTime>,
 }

 impl DumpInfo {
@ -180,19 +185,19 @@ impl DumpInfo {
            uid,
            status,
            error: None,
-            started_at: Utc::now(),
+            started_at: OffsetDateTime::now_utc(),
            finished_at: None,
        }
    }

    pub fn with_error(&mut self, error: String) {
        self.status = DumpStatus::Failed;
-        self.finished_at = Some(Utc::now());
+        self.finished_at = Some(OffsetDateTime::now_utc());
        self.error = Some(error);
    }

    pub fn done(&mut self) {
-        self.finished_at = Some(Utc::now());
+        self.finished_at = Some(OffsetDateTime::now_utc());
        self.status = DumpStatus::Done;
    }

--- a/meilisearch-lib/src/index_controller/mod.rs
+++ b/meilisearch-lib/src/index_controller/mod.rs
@ -8,11 +8,11 @@ use std::time::Duration;

 use actix_web::error::PayloadError;
 use bytes::Bytes;
-use chrono::{DateTime, Utc};
 use futures::Stream;
 use futures::StreamExt;
 use milli::update::IndexDocumentsMethod;
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;
 use tokio::sync::{mpsc, RwLock};
 use tokio::task::spawn_blocking;
 use tokio::time::sleep;
@ -48,8 +48,8 @@ pub type Payload = Box<
    dyn Stream<Item = std::result::Result<Bytes, PayloadError>> + Send + Sync + 'static + Unpin,
 >;

-pub fn open_meta_env(path: &Path, size: usize) -> heed::Result<heed::Env> {
-    let mut options = heed::EnvOpenOptions::new();
+pub fn open_meta_env(path: &Path, size: usize) -> milli::heed::Result<milli::heed::Env> {
+    let mut options = milli::heed::EnvOpenOptions::new();
    options.map_size(size);
    options.max_dbs(20);
    options.open(path)
@ -114,7 +114,8 @@ impl fmt::Display for DocumentAdditionFormat {
 #[serde(rename_all = "camelCase")]
 pub struct Stats {
    pub database_size: u64,
-    pub last_update: Option<DateTime<Utc>>,
+    #[serde(serialize_with = "time::serde::rfc3339::option::serialize")]
+    pub last_update: Option<OffsetDateTime>,
    pub indexes: BTreeMap<String, IndexStats>,
 }

@ -582,7 +583,7 @@ where
    }

    pub async fn get_all_stats(&self, search_rules: &SearchRules) -> Result<Stats> {
-        let mut last_task: Option<DateTime<_>> = None;
+        let mut last_task: Option<OffsetDateTime> = None;
        let mut indexes = BTreeMap::new();
        let mut database_size = 0;
        let processing_tasks = self.scheduler.read().await.get_processing_tasks().await?;
--- a/meilisearch-lib/src/index_resolver/error.rs
+++ b/meilisearch-lib/src/index_resolver/error.rs
@ -45,7 +45,7 @@ impl From<OneshotRecvError> for IndexResolverError {
 }

 internal_error!(
-    IndexResolverError: heed::Error,
+    IndexResolverError: milli::heed::Error,
    uuid::Error,
    std::io::Error,
    tokio::task::JoinError,
--- a/meilisearch-lib/src/index_resolver/meta_store.rs
+++ b/meilisearch-lib/src/index_resolver/meta_store.rs
@ -4,8 +4,8 @@ use std::io::{BufRead, BufReader, Write};
 use std::path::{Path, PathBuf};
 use std::sync::Arc;

-use heed::types::{SerdeBincode, Str};
-use heed::{CompactionOption, Database, Env};
+use milli::heed::types::{SerdeBincode, Str};
+use milli::heed::{CompactionOption, Database, Env};
 use serde::{Deserialize, Serialize};
 use uuid::Uuid;

@ -56,7 +56,7 @@ impl Drop for HeedMetaStore {
 }

 impl HeedMetaStore {
-    pub fn new(env: Arc<heed::Env>) -> Result<Self> {
+    pub fn new(env: Arc<milli::heed::Env>) -> Result<Self> {
        let db = env.create_database(Some("uuids"))?;
        Ok(Self { env, db })
    }
@ -153,7 +153,7 @@ impl HeedMetaStore {
        Ok(())
    }

-    pub fn load_dump(src: impl AsRef<Path>, env: Arc<heed::Env>) -> Result<()> {
+    pub fn load_dump(src: impl AsRef<Path>, env: Arc<milli::heed::Env>) -> Result<()> {
        let src_indexes = src.as_ref().join(UUIDS_DB_PATH).join("data.jsonl");
        let indexes = File::open(&src_indexes)?;
        let mut indexes = BufReader::new(indexes);
--- a/meilisearch-lib/src/index_resolver/mod.rs
+++ b/meilisearch-lib/src/index_resolver/mod.rs
@ -6,14 +6,14 @@ use std::convert::{TryFrom, TryInto};
 use std::path::Path;
 use std::sync::Arc;

-use chrono::Utc;
 use error::{IndexResolverError, Result};
-use heed::Env;
 use index_store::{IndexStore, MapIndexStore};
 use meilisearch_error::ResponseError;
 use meta_store::{HeedMetaStore, IndexMetaStore};
+use milli::heed::Env;
 use milli::update::{DocumentDeletionResult, IndexerConfig};
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;
 use tokio::sync::oneshot;
 use tokio::task::spawn_blocking;
 use uuid::Uuid;
@ -39,7 +39,7 @@ pub fn create_index_resolver(
    path: impl AsRef<Path>,
    index_size: usize,
    indexer_opts: &IndexerOpts,
-    meta_env: Arc<heed::Env>,
+    meta_env: Arc<milli::heed::Env>,
    file_store: UpdateFileStore,
 ) -> anyhow::Result<HardStateIndexResolver> {
    let uuid_store = HeedMetaStore::new(meta_env)?;
@ -115,18 +115,19 @@ where
            self.process_document_addition_batch(batch).await
        } else {
            if let Some(task) = batch.tasks.first_mut() {
-                task.events.push(TaskEvent::Processing(Utc::now()));
+                task.events
+                    .push(TaskEvent::Processing(OffsetDateTime::now_utc()));

                match self.process_task(task).await {
                    Ok(success) => {
                        task.events.push(TaskEvent::Succeded {
                            result: success,
-                            timestamp: Utc::now(),
+                            timestamp: OffsetDateTime::now_utc(),
                        });
                    }
                    Err(err) => task.events.push(TaskEvent::Failed {
                        error: err.into(),
-                        timestamp: Utc::now(),
+                        timestamp: OffsetDateTime::now_utc(),
                    }),
                }
            }
@ -225,7 +226,7 @@ where

                // If the index doesn't exist and we are not allowed to create it with the first
                // task, we must fails the whole batch.
-                let now = Utc::now();
+                let now = OffsetDateTime::now_utc();
                let index = match index {
                    Ok(index) => index,
                    Err(e) => {
@ -253,17 +254,17 @@ where

                let event = match result {
                    Ok(Ok(result)) => TaskEvent::Succeded {
-                        timestamp: Utc::now(),
+                        timestamp: OffsetDateTime::now_utc(),
                        result: TaskResult::DocumentAddition {
                            indexed_documents: result.indexed_documents,
                        },
                    },
                    Ok(Err(e)) => TaskEvent::Failed {
-                        timestamp: Utc::now(),
+                        timestamp: OffsetDateTime::now_utc(),
                        error: e.into(),
                    },
                    Err(e) => TaskEvent::Failed {
-                        timestamp: Utc::now(),
+                        timestamp: OffsetDateTime::now_utc(),
                        error: IndexResolverError::from(e).into(),
                    },
                };
@ -524,7 +525,7 @@ mod test {
                        };
                        if primary_key.is_some() {
                            mocker.when::<String, IndexResult<IndexMeta>>("update_primary_key")
-                                .then(move |_| Ok(IndexMeta{ created_at: Utc::now(), updated_at: Utc::now(), primary_key: None }));
+                                .then(move |_| Ok(IndexMeta{ created_at: OffsetDateTime::now_utc(), updated_at: OffsetDateTime::now_utc(), primary_key: None }));
                        }
                        mocker.when::<(IndexDocumentsMethod, Option<String>, UpdateFileStore, IntoIter<Uuid>), IndexResult<DocumentAdditionResult>>("update_documents")
                                .then(move |(_, _, _, _)| result());
@ -569,7 +570,7 @@ mod test {
                    | TaskContent::IndexCreation { primary_key } => {
                        if primary_key.is_some() {
                            let result = move || if !index_op_fails {
-                                Ok(IndexMeta{ created_at: Utc::now(), updated_at: Utc::now(), primary_key: None })
+                                Ok(IndexMeta{ created_at: OffsetDateTime::now_utc(), updated_at: OffsetDateTime::now_utc(), primary_key: None })
                            } else {
                                // return this error because it's easy to generate...
                                Err(IndexError::DocumentNotFound("a doc".into()))
@ -640,7 +641,7 @@ mod test {
                let update_file_store = UpdateFileStore::mock(mocker);
                let index_resolver = IndexResolver::new(uuid_store, index_store, update_file_store);

-                let batch = Batch { id: 1, created_at: Utc::now(), tasks: vec![task.clone()] };
+                let batch = Batch { id: 1, created_at: OffsetDateTime::now_utc(), tasks: vec![task.clone()] };
                let result = index_resolver.process_batch(batch).await;

                // Test for some expected output scenarios:
--- a/meilisearch-lib/src/lib.rs
+++ b/meilisearch-lib/src/lib.rs
@ -13,8 +13,8 @@ mod update_file_store;
 use std::path::Path;

 pub use index_controller::MeiliSearch;
-
 pub use milli;
+pub use milli::heed;

 mod compression;
 pub mod document_formats;
@ -25,7 +25,7 @@ pub trait EnvSizer {
    fn size(&self) -> u64;
 }

-impl EnvSizer for heed::Env {
+impl EnvSizer for milli::heed::Env {
    fn size(&self) -> u64 {
        WalkDir::new(self.path())
            .into_iter()
--- a/meilisearch-lib/src/options.rs
+++ b/meilisearch-lib/src/options.rs
@ -48,24 +48,24 @@ pub struct IndexerOpts {
 pub struct SchedulerConfig {
    /// enable the autobatching experimental feature
    #[clap(long, hide = true)]
-    pub enable_autobatching: bool,
+    pub enable_auto_batching: bool,

    // The maximum number of updates of the same type that can be batched together.
    // If unspecified, this is unlimited. A value of 0 is interpreted as 1.
-    #[clap(long, requires = "enable-autobatching", hide = true)]
+    #[clap(long, requires = "enable-auto-batching", hide = true)]
    pub max_batch_size: Option<usize>,

    // The maximum number of documents in a document batch. Since batches must contain at least one
    // update for the scheduler to make progress, the number of documents in a batch will be at
    // least the number of documents of its first update.
-    #[clap(long, requires = "enable-autobatching", hide = true)]
+    #[clap(long, requires = "enable-auto-batching", hide = true)]
    pub max_documents_per_batch: Option<usize>,

    /// Debounce duration in seconds
    ///
    /// When a new task is enqueued, the scheduler waits for `debounce_duration_sec` seconds for new updates before
    /// starting to process a batch of updates.
-    #[clap(long, requires = "enable-autobatching", hide = true)]
+    #[clap(long, requires = "enable-auto-batching", hide = true)]
    pub debounce_duration_sec: Option<u64>,
 }

--- a/meilisearch-lib/src/snapshot.rs
+++ b/meilisearch-lib/src/snapshot.rs
@ -149,7 +149,7 @@ impl SnapshotJob {
        let env = open_meta_env(&self.src_path, self.meta_env_size)?;

        let dst = path.join("data.mdb");
-        env.copy_to_path(dst, heed::CompactionOption::Enabled)?;
+        env.copy_to_path(dst, milli::heed::CompactionOption::Enabled)?;

        Ok(())
    }
@ -180,12 +180,12 @@ impl SnapshotJob {

            let dst = dst.join("data.mdb");

-            let mut options = heed::EnvOpenOptions::new();
+            let mut options = milli::heed::EnvOpenOptions::new();
            options.map_size(self.index_size);
            let index = milli::Index::new(options, entry.path())?;
            index
                .env
-                .copy_to_path(dst, heed::CompactionOption::Enabled)?;
+                .copy_to_path(dst, milli::heed::CompactionOption::Enabled)?;
        }

        Ok(())
@ -198,7 +198,7 @@ impl SnapshotJob {
        let dst = dst.join("data.mdb");

        let env = open_auth_store_env(&auth_path)?;
-        env.copy_to_path(dst, heed::CompactionOption::Enabled)?;
+        env.copy_to_path(dst, milli::heed::CompactionOption::Enabled)?;

        Ok(())
    }
--- a/meilisearch-lib/src/tasks/batch.rs
+++ b/meilisearch-lib/src/tasks/batch.rs
@ -1,4 +1,4 @@
-use chrono::{DateTime, Utc};
+use time::OffsetDateTime;

 use super::task::Task;

@ -7,7 +7,7 @@ pub type BatchId = u64;
 #[derive(Debug)]
 pub struct Batch {
    pub id: BatchId,
-    pub created_at: DateTime<Utc>,
+    pub created_at: OffsetDateTime,
    pub tasks: Vec<Task>,
 }

--- a/meilisearch-lib/src/tasks/error.rs
+++ b/meilisearch-lib/src/tasks/error.rs
@ -16,7 +16,7 @@ pub enum TaskError {
 }

 internal_error!(
-    TaskError: heed::Error,
+    TaskError: milli::heed::Error,
    JoinError,
    std::io::Error,
    serde_json::Error,
--- a/meilisearch-lib/src/tasks/scheduler.rs
+++ b/meilisearch-lib/src/tasks/scheduler.rs
@ -6,8 +6,8 @@ use std::sync::Arc;
 use std::time::Duration;

 use atomic_refcell::AtomicRefCell;
-use chrono::Utc;
 use milli::update::IndexDocumentsMethod;
+use time::OffsetDateTime;
 use tokio::sync::{watch, RwLock};

 use crate::options::SchedulerConfig;
@ -218,7 +218,7 @@ impl Scheduler {
        let debounce_time = config.debounce_duration_sec;

        // Disable autobatching
-        if !config.enable_autobatching {
+        if !config.enable_auto_batching {
            config.max_batch_size = Some(1);
        }

@ -357,7 +357,7 @@ impl Scheduler {
            tasks.iter_mut().for_each(|t| {
                t.events.push(TaskEvent::Batched {
                    batch_id: id,
-                    timestamp: Utc::now(),
+                    timestamp: OffsetDateTime::now_utc(),
                })
            });

@ -365,7 +365,7 @@ impl Scheduler {

            let batch = Batch {
                id,
-                created_at: Utc::now(),
+                created_at: OffsetDateTime::now_utc(),
                tasks,
            };

--- a/meilisearch-lib/src/tasks/task.rs
+++ b/meilisearch-lib/src/tasks/task.rs
@ -1,9 +1,9 @@
 use std::path::PathBuf;

-use chrono::{DateTime, Utc};
 use meilisearch_error::ResponseError;
 use milli::update::{DocumentAdditionResult, IndexDocumentsMethod};
 use serde::{Deserialize, Serialize};
+use time::OffsetDateTime;
 use tokio::sync::oneshot;
 use uuid::Uuid;

@ -36,22 +36,33 @@ impl From<DocumentAdditionResult> for TaskResult {
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
 #[cfg_attr(test, derive(proptest_derive::Arbitrary))]
 pub enum TaskEvent {
-    Created(#[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))] DateTime<Utc>),
+    Created(
+        #[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))]
+        #[serde(with = "time::serde::rfc3339")]
+        OffsetDateTime,
+    ),
    Batched {
        #[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))]
-        timestamp: DateTime<Utc>,
+        #[serde(with = "time::serde::rfc3339")]
+        timestamp: OffsetDateTime,
        batch_id: BatchId,
    },
-    Processing(#[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))] DateTime<Utc>),
+    Processing(
+        #[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))]
+        #[serde(with = "time::serde::rfc3339")]
+        OffsetDateTime,
+    ),
    Succeded {
        result: TaskResult,
        #[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))]
-        timestamp: DateTime<Utc>,
+        #[serde(with = "time::serde::rfc3339")]
+        timestamp: OffsetDateTime,
    },
    Failed {
        error: ResponseError,
        #[cfg_attr(test, proptest(strategy = "test::datetime_strategy()"))]
-        timestamp: DateTime<Utc>,
+        #[serde(with = "time::serde::rfc3339")]
+        timestamp: OffsetDateTime,
    },
 }

@ -165,7 +176,7 @@ mod test {
        ]
    }

-    pub(super) fn datetime_strategy() -> impl Strategy<Value = DateTime<Utc>> {
-        Just(Utc::now())
+    pub(super) fn datetime_strategy() -> impl Strategy<Value = OffsetDateTime> {
+        Just(OffsetDateTime::now_utc())
    }
 }
--- a/meilisearch-lib/src/tasks/task_store/mod.rs
+++ b/meilisearch-lib/src/tasks/task_store/mod.rs
@ -5,9 +5,9 @@ use std::io::{BufWriter, Write};
 use std::path::Path;
 use std::sync::Arc;

-use chrono::Utc;
-use heed::{Env, RwTxn};
 use log::debug;
+use milli::heed::{Env, RwTxn};
+use time::OffsetDateTime;

 use super::error::TaskError;
 use super::task::{Task, TaskContent, TaskId};
@ -61,7 +61,7 @@ impl Clone for TaskStore {
 }

 impl TaskStore {
-    pub fn new(env: Arc<heed::Env>) -> Result<Self> {
+    pub fn new(env: Arc<milli::heed::Env>) -> Result<Self> {
        let store = Arc::new(Store::new(env)?);
        Ok(Self { store })
    }
@ -72,7 +72,7 @@ impl TaskStore {
        let task = tokio::task::spawn_blocking(move || -> Result<Task> {
            let mut txn = store.wtxn()?;
            let next_task_id = store.next_task_id(&mut txn)?;
-            let created_at = TaskEvent::Created(Utc::now());
+            let created_at = TaskEvent::Created(OffsetDateTime::now_utc());
            let task = Task {
                id: next_task_id,
                index_uid,
@ -248,7 +248,7 @@ pub mod test {
    }

    impl MockTaskStore {
-        pub fn new(env: Arc<heed::Env>) -> Result<Self> {
+        pub fn new(env: Arc<milli::heed::Env>) -> Result<Self> {
            Ok(Self::Real(TaskStore::new(env)?))
        }

--- a/meilisearch-lib/src/tasks/task_store/store.rs
+++ b/meilisearch-lib/src/tasks/task_store/store.rs
@ -1,5 +1,5 @@
 #[allow(clippy::upper_case_acronyms)]
-type BEU64 = heed::zerocopy::U64<heed::byteorder::BE>;
+type BEU64 = milli::heed::zerocopy::U64<milli::heed::byteorder::BE>;

 const UID_TASK_IDS: &str = "uid_task_id";
 const TASKS: &str = "tasks";
@ -12,8 +12,8 @@ use std::ops::Range;
 use std::result::Result as StdResult;
 use std::sync::Arc;

-use heed::types::{ByteSlice, OwnedType, SerdeJson, Unit};
-use heed::{BytesDecode, BytesEncode, Database, Env, RoTxn, RwTxn};
+use milli::heed::types::{ByteSlice, OwnedType, SerdeJson, Unit};
+use milli::heed::{BytesDecode, BytesEncode, Database, Env, RoTxn, RwTxn};

 use crate::tasks::task::{Task, TaskId};

@ -73,7 +73,7 @@ impl Store {
    /// be in an invalid state, with dangling processing tasks.
    /// You want to patch  all un-finished tasks and put them in your pending
    /// queue with the `reset_and_return_unfinished_update` method.
-    pub fn new(env: Arc<heed::Env>) -> Result<Self> {
+    pub fn new(env: Arc<milli::heed::Env>) -> Result<Self> {
        let uids_task_ids = env.create_database(Some(UID_TASK_IDS))?;
        let tasks = env.create_database(Some(TASKS))?;

@ -130,7 +130,7 @@ impl Store {
        let range = from..limit
            .map(|limit| (limit as u64).saturating_add(from))
            .unwrap_or(u64::MAX);
-        let iter: Box<dyn Iterator<Item = StdResult<_, heed::Error>>> = match filter {
+        let iter: Box<dyn Iterator<Item = StdResult<_, milli::heed::Error>>> = match filter {
            Some(
                ref filter @ TaskFilter {
                    indexes: Some(_), ..
@ -150,7 +150,7 @@ impl Store {
            ),
        };

-        let apply_fitler = |task: &StdResult<_, heed::Error>| match task {
+        let apply_fitler = |task: &StdResult<_, milli::heed::Error>| match task {
            Ok(ref t) => filter
                .as_ref()
                .and_then(|filter| filter.filter_fn.as_ref())
@ -162,7 +162,7 @@ impl Store {
        let tasks = iter
            .filter(apply_fitler)
            .take(limit.unwrap_or(usize::MAX))
-            .try_fold::<_, _, StdResult<_, heed::Error>>(Vec::new(), |mut v, task| {
+            .try_fold::<_, _, StdResult<_, milli::heed::Error>>(Vec::new(), |mut v, task| {
                v.push(task?);
                Ok(v)
            })?;
@ -172,7 +172,7 @@ impl Store {

    fn compute_candidates(
        &self,
-        txn: &heed::RoTxn,
+        txn: &milli::heed::RoTxn,
        filter: &TaskFilter,
        range: Range<TaskId>,
    ) -> Result<BinaryHeap<TaskId>> {
@ -188,10 +188,10 @@ impl Store {
                self.uids_task_ids
                    .remap_key_type::<ByteSlice>()
                    .rev_prefix_iter(txn, &index_uid)?
-                    .map(|entry| -> StdResult<_, heed::Error> {
+                    .map(|entry| -> StdResult<_, milli::heed::Error> {
                        let (key, _) = entry?;
-                        let (_, id) =
-                            IndexUidTaskIdCodec::bytes_decode(key).ok_or(heed::Error::Decoding)?;
+                        let (_, id) = IndexUidTaskIdCodec::bytes_decode(key)
+                            .ok_or(milli::heed::Error::Decoding)?;
                        Ok(id)
                    })
                    .skip_while(|entry| {
@ -212,7 +212,7 @@ impl Store {
                            // if we encounter an error we returns true to collect it later
                            .unwrap_or(true)
                    })
-                    .try_for_each::<_, StdResult<(), heed::Error>>(|id| {
+                    .try_for_each::<_, StdResult<(), milli::heed::Error>>(|id| {
                        candidates.push(id?);
                        Ok(())
                    })?;
@ -225,8 +225,8 @@ impl Store {

 #[cfg(test)]
 pub mod test {
-    use heed::EnvOpenOptions;
    use itertools::Itertools;
+    use milli::heed::EnvOpenOptions;
    use nelson::Mocker;
    use proptest::collection::vec;
    use proptest::prelude::*;
@ -244,10 +244,10 @@ pub mod test {
        Fake(Mocker),
    }

-    pub struct TmpEnv(TempDir, Arc<heed::Env>);
+    pub struct TmpEnv(TempDir, Arc<milli::heed::Env>);

    impl TmpEnv {
-        pub fn env(&self) -> Arc<heed::Env> {
+        pub fn env(&self) -> Arc<milli::heed::Env> {
            self.1.clone()
        }
    }
@ -264,7 +264,7 @@ pub mod test {
    }

    impl MockStore {
-        pub fn new(env: Arc<heed::Env>) -> Result<Self> {
+        pub fn new(env: Arc<milli::heed::Env>) -> Result<Self> {
            Ok(Self::Real(Store::new(env)?))
        }

--- a/meilisearch-lib/src/tasks/update_loop.rs
+++ b/meilisearch-lib/src/tasks/update_loop.rs
@ -1,7 +1,7 @@
 use std::sync::Arc;
 use std::time::Duration;

-use chrono::Utc;
+use time::OffsetDateTime;
 use tokio::sync::{watch, RwLock};
 use tokio::time::interval_at;

@ -63,7 +63,8 @@ where
        match pending {
            Pending::Batch(mut batch) => {
                for task in &mut batch.tasks {
-                    task.events.push(TaskEvent::Processing(Utc::now()));
+                    task.events
+                        .push(TaskEvent::Processing(OffsetDateTime::now_utc()));
                }

                batch.tasks = {