What is the Best Cache Plugin for WordPress?

Probably https://www.ads-software.com/extend/plugins/wp-super-cache/

Good question.

As far as I can tell, with wp-cache your users CANNOT LEAVE COMMENTS if the page is cached. Well, they can press “Post” and the comment should get to your database, but the user may not see anything:

a) site may not respond after posting
b) cache code might crash because it expects to find a cached page that doesn’t exist.

Comment won’t show up until the cache expires–defaults to one hour.

I use wp_super-cache and it works great.

db cache reloaded is great.

KnowingArt_com – wp-cache hasn’t been updated in years. You really shouldn’t be using it. Try wp-super-cache instead.