This made me curious - are there any SQL databases being actively developed in Rust? I found one on GitHub (LlamaDB) that does not appear to be maintained.
Toshi (https://github.com/toshi-search/Toshi) is Elasticsearch-like engine that uses tantivy (Lucene-like), both also written in Rust.
Same with https://github.com/mozilla/mentat/
https://github.com/indradb/indradb is a newer db in alpha.
https://github.com/spacejam/sled is also in alpha but is being actively developed.
I have a need for an ultra simple, low volume, non critical full text search system. I was looking for alternative to Elasticsearch, that I could also contribute to, and here it is!!!
It's compatible with the MySQL wire protocol and offers extremely efficient, incrementally updating materialized views.