Installation

Before installing and activating the LSCache plugin, deactivate all other full-page cache plugins.

Tip

You can still use other types of cache (like object cache), but only one page cache can be used at a time, so you’ll need to disable any other page caches, if you want to use LSCache.

Extension Installation

Note

Please see the Overview for the server-level requirements before attempting to install this extension.

  1. Visit our GitHub repository, choose the version you want, and download the LiteSpeed Cache Plugin to your local computer.
  2. Visit http://example.com/admin (where example.com/ is your OpenCart site's domain) and navigate to Extensions > Installer. Upload the downloaded zip file.
    !
  3. Once uploaded, navigate to Extensions > Choose "Modules" from "Filter" > LiteSpeed Cache and install the plugin.
    !

Verify Your Site is Being Cached

!Verify Cache Miss

You can verify a page is being served from LSCache through the following steps:

  1. From a non-logged-in browser, navigate to your site, and open the developer tools (usually, right-click > Inspect). Open the Network tab.
  2. Refresh the page.
  3. Click the first resource. This should be an HTML file. For example, if your page is http://example.com/webapp/, your first resource should either be something like example.com/webapp/ or webapp/.
  4. You should see headings similar to these: 
    X-LiteSpeed-Cache: miss
X-LiteSpeed-Cache-Control:public,max-age=1800
X-LiteSpeed-Tag:B1_F,B1_
    These headings mean the page had not yet been cached, but that LiteSpeed has now stored it, and it will be served from cache with the next request.
  5. Reload the page and you should see X-LiteSpeed-Cache: hit in the response header. This means the page is being served by LSCache and is configured correctly.
    !Verify Cache Hit

Alternative Headers

The X-LiteSpeed-Cache header is most common, but you may see X-LSADC-Cache if your site is served by LiteSpeed Web ADC. You may also see X-QC-Cache if your site was served via QUIC.cloud CDN. These alternate headers are also an indication that LSCache is working properly on your site.

Important

If you don't see X-LiteSpeed-Cache: hit or X-LiteSpeed-Cache: miss (or any of the alternative headers), then there is a problem with the LSCache configuration.

Last update: October 14, 2020