Cache seems to do nothing

  • Resolved RalfM

    (@ralfm)


    6 years, 6 months ago

    Hi,
    I tried today your cache feature. Until now I used Autoptimize to do that, but why not try another one.
    First I measured the performance of my site with GTmetrix. Next, I deactivated Autoptimize and measured again. Then I switched on the cache feature in WPoptimize, preloaded the cache and also called the site several times in another browser.
    After measuring again with GTmetrix, there is no difference in the results to them without cache. There is also no difference in the number of requests.
    So is this a cache or a fancy interface only?

Viewing 6 replies - 1 through 6 (of 6 total)
  • Optimizing Matters

    (@optimizingmatters)

    6 years, 6 months ago

    quick feedback: Autoptimize does not do page caching, only resource (JS/ CSS/ ..) optimization.

    frank (ao dev)

    Thread Starter RalfM

    (@ralfm)

    6 years, 6 months ago

    Well, Frank,
    but this is very successful, while the cache seems to do nothing.
    I tried now on another page – with the same result.
    Maybe I do something wrong, but it looks like I stay with AO at all and it’s fine.

    Plugin Author David Anderson / Team Updraft

    (@davidanderson)

    6 years, 6 months ago

    Hi Ralf,

    Thanks for using WP-O. Please can you explain further? I don’t quite understand the test you’re running. Minification and page cacheing are two separate technologies…. it makes no sense to compare one with the other. You should do both.

    Also – page cacheing is affecting time to first byte on the page HTML. A test that involves other things (especially a comprehensive test of all performance elements) doesn’t make sense because you’re testing the wrong things. To test the effect of page cacheing, you should use a tool that’s allowing you to just see that “time to first byte” for the HTML of main page, and look *only* at that (if you’re looking at things like overall time, time to render, number of separate network connections, image compression quality, etc. this is all irrelevant to page cacheing).

    Also see: https://getwpo.com/faqs/#How-do-I-know-my-webpage-is-being-cached-or-why-it-isn-t-

    David

    Thread Starter RalfM

    (@ralfm)

    6 years, 6 months ago

    Hi David,
    I tried again and found that without cache, the “time to first byte” is 350-500ms better with cache on. So this is great! I can’t explain why this is not viewable in the scores.
    I also get the message in the source that the cache is working. The last-modified time is very useful there.
    Autoptimize cuts this string out, but this is no problem and saves some traffic.
    So thanks for explaining!

    Plugin Author David Anderson / Team Updraft

    (@davidanderson)

    6 years, 6 months ago

    Hi RalfM,

    Great – glad to hear it’s working!

    Some tools producing scores are looking at everything together (which is very reasonable), and it’ll often depend upon whatever the “weakest link” is. It can depend on a lot of things. Anyway – it sounds like WP-O’s page cache is doing its job, so that’s the main thing (as far as this support request goes).

    David

    Thread Starter RalfM

    (@ralfm)

    6 years, 6 months ago

    Exactly,
    thanks a lot David.

Viewing 6 replies - 1 through 6 (of 6 total)

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