there will be an extension for elasticsearch?

meihuak

I'm very glad that Flarum has entered the 2.0 stage. However, his search function is not very user-friendly for non-English systems, especially for those with more than 50,000 discussions. It is hoped that there will be a better solution to support large non-English communities.

KBExit

There is this: https://discuss.flarum.org/d/30404-blomstra-search-an-elasticsearch-fulltext-search-extension
Also: https://discuss.flarum.org/d/30874-scout-search