Support » Plugin: W3 Total Cache » Need a "guide" about w3tc server load

  • W3tc surely is the best caching plugin for WordPress, in terms of features and provided options.
    However, in many cases its benefits are zeroed by a too high server load caused by some features, that dramatically increases page generation time and causes throttling on shared hosting.
    I searched for some information about this aspect and tried to put it together, but a clear, thorough guide is missing. This is what I discovered to date:
    -minification is one of the most server heavy features,
    -minification should be set to disk basic on shared hosting,
    -database and object caching are often discouraged on shared hosting,
    -page cache with advanced disk is suggested on shared hosting and should not give server load problems.

    However, there are several aspects I would like to know, from the point of view of a shared hosting or other situations in which server performance is limited:
    -how do garbage collection times affect server load? Roughly what garbage collection time should I set based on my traffic?
    -how does cache preloading affect server load?
    -among css, js and html caching, which are more server intensive? Are there safe settings that do not overload the server?
    -browser cache should not affect server load, right?
    -how do CDN settings affect server load?

    I think that the plugin creator could give the best answers, even if with approximation.
    Any other suggestion based on experience is welcome.

Viewing 1 replies (of 1 total)
  • Plugin Author Frederick Townes


    If a feature is increasing load, it’s not actually compatible with your site or hosting environment or it’s misconfigured. It’s a framework, you’re allowed to experiment and do things wrong. The techniques are implemented using best practices, but again, you can easily do something wrong if you just set and don’t test (depending on the feature and setting and your theme / plugins).

    On shared hosting, everything you do has some significant effect. Your mileage will vary by time of day and day-to-day because you use shared resources. There are no approximations that are accurate unless your host makes them.

Viewing 1 replies (of 1 total)
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