What does HackerNews think of tantivy?
Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust
Here I'm listing engines based on https://github.com/quickwit-oss/tantivy - tantivy is comparable to Lucene in its scope - but I'm sure there are other engines that could tackle ElasticSearch.
Another thing that could happen is maybe directly embed tantivy in Postgres using an extension, perhaps this could be an option too.
Sonic[2] I know much less about but it also seems good. Honestly anything except ES is what I like to hear about (though OpenSearch is interesting).
Another thing I think the world really needs is a CLI +/- API tool (ideally rust lib + CLI + API) that unifies interacting with these things. I got REALLY close to writing it while working on this article, but I was already running late and I have a penchant for yak shaving.
This won't be the last thing I write about search engines -- there's been a LOT of movement in the space that has nothing to do with the elastic/opensearch debacle and I don't see enough tires getting kicked.
[0]: https://github.com/quickwit-oss/tantivy