Is Redis needed in this case?

Question

Redis

There are many tables in the database with ads, comments and other things. How to cache these requests? Whether redis is needed in this case, I can’t understand when reading the docks. Or do I need something else to cache data from the database?

Answer 1

ruhighload.com/index.php/2009/06/23/%D0%BF%D1%80%D...
Requests are cached by the DBMS itself. Answers should be cached. If you have the same queries that return the same data for a long time, then these answers should be cached so as not to drive the database once again.