The query cache is deprecated as of MySQL 5.7.20, what does it mean and what to expect?

Question

MySQL

Colleagues, tell me, I can’t find information about what awaits us after the release of MySQL 5.7.20, how the cache will work in mysql.
This context was found in the documentation at the link: https://dev.mysql.com/doc/refman/5.7/en/flush.html...

The query cache is deprecated as of MySQL 5.7.20, and is removed in MySQL 8.0. Deprecation includes FLUSH QUERY CACHE.

Where to dig and where to get acquainted with innovations?

Answer 1

Actually, it means that they remove the request cache.
mysqlserverteam.com/mysql-8-0-retiring-support-for...

Answer 2

Query cache is generally a very ambiguous thing, and it's best to set query_cache_size to 0 . Therefore, not a big loss. For those who have been doing this for a long time, there are no consequences. For those who relied on it, there is a little bit of reading and picking in the code.