letarette

Letarette - a full-text search thingy

Letarette provides full-text search capabilities to your project with very little setup. You can start out small with a single local index, and if you need, grow to a fully redundant installation with a sharded index.

Letarette is a distributed search system that uses NATS for messaging and SQLite FTS5 for the search index.

There is a client library for Go as part of the Letarette main project and a separate Typescript/Javascript library, letarette.js.

Letarette is released under the Apache v2 license.

Letarette main site

Getting started

NATS server

Since NATS is the core messaging component, a NATS server needs to be running for Letarette to function. NATS it is super lightweight and requires no setup to get started: NATS Server Installation.

Search Agent

Searching in Letarette is easy using the client library:

agent, err := client.NewSearchAgent(config.NatsURL)
if err != nil {
    ...
}
defer agent.Close()

spaces := []string{"fruits"}
limit := 10
offset := 0

res, err := agent.Search("apple", spaces, limit, offset)
if err != nil {
    ...
}

for _, doc := range res.Documents {
    fmt.Println(doc.Snippet)
}

Letarette search results contain the document ID, rank and a short snippet of the matching text. Dressing up the result, if needed, is up to the search client implementation.

Read more on the Letarette main site.