[Plugin: WP File Cache] This plugin slows mysite

Hi Matt,

WP Super Cache and WP File Cache are completely different plugins in what they cache.

WP Super Cache is a page level cache plugin – that is, it caches the whole page and on subsequent requests it just sends the cached page to thje user bypassing WordPress and slow queries. The advantage of this approach is that WP Super Cache is extremely fast, disadvantage is that you lose all dynamics.

WP File Cache is an object level cache plugin – it caches only those objects which it is explicitly asked to. That is, the plugins/theme must be coded to use WordPress Cache API. WordPress core uses WP Cache API, but third party plugins may not use it. In this case if those plugins are slow, WP File Cache won’t help – it cannot force the plugins to use the API.

Both plugins can coexist together and WP File Cache can help WP Super Cache when it comes to cache generation.

As for your question, could you please clarify the following: what happens when:

1. Super Cache is on, File Cache is off;
2. Super Cache is off, File Cache is on;
3. both are on?

Thank you in advance.

If I remove wp-file-cache nothing changes.

When I switch off wp-super-cache site becomes to load straightly.

Well, sounds like the problem is in WP Super Cache.