When use a cache system with WordPress

Caching can help with things like Google search ranking as the pages will load faster than a site without a cache system in place so it’s perhaps not a case of needing X number of visits.

You mentioned that you had some problems… what were the problems?

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)