The question in general is "Yes, RediSearch supports all of these features". You can read about it all in the docs https://redisearch.io https://redisearch.io

The question in general is "Yes, RediSearch supports all of these features". You can read about it all in the docs https://redisearch.io https://redisearch.io I also pointed bellow to the specific relevant area in the docs. > 1. What human languages does it support. > 2. In these human languages how does stemming and decompounding work in your implementation. https://oss.redislabs.com/redisearch/Stemming/ https://oss.redislabs.com/redisearch/Stemming/ > 3. how is word importance determined in your index - TF-IDF? other algorithm? Are least important words automatically dropped from queries? >4. Do you have ability to rank on both the stemmed/decompounded query/results and exact matches? So something like raw field access. https://oss.redislabs.com/redisearch/Overview/ https://oss.redislabs.com/redisearch/Overview/