meili-core

A search engine based on the blog posts serie of the great Algolia company.

If you want to be involved in the project you can read the deep dive.

This is a library, this means that binary are not part of this repository but since I'm still nice I have made some examples for you in the examples/ folder.

Performances

We made some tests on remote machines and found that we can handle, on a server that cost 5$/month with 1vCPU and 1GB of ram and on the same index and with a simple query:

• near 190 users with an average response time of 90ms
• 150 users with an average response time of 70ms
• 100 users with an average response time of 45ms

Network is mesured, servers are located in amsterdam and tests are made between two different datacenters.

Usage and examples

Meili-core work with an index like most of the search engines. So to test the library you can create one by indexing a simple csv file.

cargo build --release --example csv-indexer
time ./target/release/examples/csv-indexer --stop-words misc/en.stopwords.txt misc/kaggle.csv

The en.stopwords.txt file here is a simple file that contains one stop word by line (e.g. or, and).

Once the command finished indexing you will have 3 files that compose the index:

• The xxx.map represent the fst map.
• The xxx.idx represent the doc indexes matching the words in the map.
• The xxx.sst is a file that contains all the fields and the values asociated with it, it is passed to the internal RocksDB.

Now you can easily run the serve-console or serve-http examples with the name of the dump. (e.g. relaxed-colden).

cargo build --release --example serve-console
./target/release/examples/serve-console relaxed-colden