How to cache GET requests on Apache2?

Question

linux

Hello everyone, I've come across the following situation: I need to cache GET requests on the server side in Apache2. You need to do this using only Apache or auxiliary scripts. Tried through mod_cache_disk inside If, ​​but Apache swears at the syntax.
The task is solved with the help of nginx, but I need it without it

Answer 1

https://www.digitalocean.com/community/tutorials/h...

Answer 2

sorry, but it seems to me that you gave little introductory information,
for which the Version
Engine