Title: cache not working
Last modified: April 29, 2020

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# cache not working

 *  Resolved [macpheek](https://wordpress.org/support/users/macpheek/)
 * (@macpheek)
 * [6 years ago](https://wordpress.org/support/topic/cache-not-working-13/)
 * Hi, whenever I make a change to the site and clear the hummingbird cache, my 
   browsers cache and the cache within my hosting it’s still not updating, are you
   able to help?
 * Also when I make some changes in asset compression, it doesn’t reflect on my 
   google page speed score, does this normally take some time to update?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Support [Laura – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support8/)
 * (@wpmudev-support8)
 * [6 years ago](https://wordpress.org/support/topic/cache-not-working-13/#post-12760601)
 * Hello [@macpheek](https://wordpress.org/support/users/macpheek/)
 * I hope you’re well today and thank you for your question!
 * When you’re clearing the cache in Hummingbird, you’re clearing Page Cache and
 * – in some cases it can also Purge OpCache and Varinsh cache but that’s only if
   those are installed on server and configured to be “available to be controlled
   by scripts” (so server allows that)
 * – a CloudFlare cache if CloudFlare is implemented for site and is connected to
   Hummingbird
 * – Hummingbird’s internal “Asset Optimization” cache.
 * However, “cache with hosting” doesn’t really have to be Varnish or OpCache and
   if it isn’t, Hummingbird won’t be able to clear it. In fact it would mostly be
   up to the host to provide tools necessary to make it possible to clear such cache
   directly from your site or to make it automatically detect changes and “auto-
   flush”.
 * Browser cache is yet another thing and plugin can’t really delete any content
   inside visitor’s browser. The only ways to clear browser cache is to either let
   it expire or to manually do it directly in the browser (so visitor would have
   to do this) or to force different version numbers for cached assets via query
   string (URL parementer).
 * This last way would be also the only way you could actually force clearing browser
   cache from your site (so without being able to physically use visitors’ browsers)
   but this, on the other hand, is not related to Page Cache.
 * Basically, this should only be cleared if a content of a cached asset is changed,
   so for example content of a “example.js” file or “mystyle.css” file is changed.
   In such case a version number of such asset should be changed but that should
   be taken care of by either developer/designer/person who makes that change or
   the tool (plugin or page builder) that generates such code. The way to achieve
   it is to make sure that such asset is properly enqueued in WordPress and version
   number is updated:
 * [https://developer.wordpress.org/reference/functions/wp_enqueue_script/](https://developer.wordpress.org/reference/functions/wp_enqueue_script/)
 * That said, as a “workaround” for “forcing” clearing browser cache there are plugins
   such as “Clear Cache for Me” that you can find in “Plugins” section of this website.
 * > Also when I make some changes in asset compression, it doesn’t reflect on my
   > google page speed score, does this normally take some time to update?
 * You can see if assets were processed by looking at file list in “Asset Optimization”.
   if there’s no gray(ish) spinning “gear” icons, it means changes were published.
   This should be happening quite fast, though it’s important to remember that sometimes
   some assets are only loaded on certain pages of the site – not everywhere – and
   those will only be processed after they are loaded.
 * Still though, that should be nearly immediate. Not all the changes, however, 
   will actually affect the score and quite often they’ll affect the score (as in“
   numbers”, not as in actual performance/loading speed) much less than one could
   expect. Page Speed doesn’t do a simple “+1 point, -1 point’ calculation but instead
   they calculate weighted values of multiple factors so it’s really difficult to
   predict or estimate what changes and to what degree will affect the score.
 * It’d be easier to give some more advice and details on this, if I could check
   the site in question and test it with Page Speed. Would you mind sharing the 
   link to the site with me here?
 * I’d like to take a look at it.
 * Best regards,
    Adam
 *  Plugin Support [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/)
 * (@wpmudev-support6)
 * [6 years ago](https://wordpress.org/support/topic/cache-not-working-13/#post-12847853)
 * Hello [@macpheek](https://wordpress.org/support/users/macpheek/)
 * I’m marking this topic as resolved due to recent inactivity.
    Feel free to post
   back any updates and we’ll carry on troubleshooting.
 * Take care,
    Dimitris

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘cache not working’ is closed to new replies.

 * ![](https://ps.w.org/hummingbird-performance/assets/icon-256x256.gif?rev=2633221)
 * [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN](https://wordpress.org/plugins/hummingbird-performance/)
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 * 2 replies
 * 3 participants
 * Last reply from: [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/)
 * Last activity: [6 years ago](https://wordpress.org/support/topic/cache-not-working-13/#post-12847853)
 * Status: resolved