Plugin / LiteSpeed Cache
LiteSpeed Technologies
Frequently Asked Questions (FAQ)
This plugin communicates with your LiteSpeed Web Server and its built-in page cache (LSCache) to deliver superior performance to your WordPress site. The plugin’s cache features indicate to the server that a page is cacheable and for how long, or they invalidate particular cached pages using tags.
LSCache is a server-level cache, so it’s faster than PHP-level caches. Compare with other PHP-based caches.
A page cache allows the server to bypass PHP and database queries altogether. LSCache, in particular, because of its close relationship with the server, can remember things about the cache entries that other plugins cannot, and it can analyze dependencies. It can utilize tags to manage the smart purging of the cache, and it can use vary cookies to serve multiple versions of cached content based on things like mobile vs. desktop, geographic location, and currencies. See our Caching 101 blog series.
If all of that sounds complicated, no need to worry. LSCWP works right out of the box with default settings that are appropriate for most sites. See the Beginner’s Guide.
Don’t have a LiteSpeed server? We’re beta testing our new QUIC.cloud CDN service, and it allows those on any server (nginx and Apache included) to experience the power of LiteSpeed caching! Click here to learn more or to give QUIC.cloud a try!
LSCWP includes additional optimization features, such as Database Optimization, Minification and Combination of CSS and JS files, HTTP/2 Push, CDN Support, Browser Cache, Object Cache, Lazy Load for Images, and Image Optimization! And now, many of these features do not require the use of a LiteSpeed web server.
Yes, LSCWP will always be free and open source. That said, a LiteSpeed server is required for the LiteSpeed Exclusive Features (see the list above), and there are fees associated with some LiteSpeed server editions (see question 2).
A LiteSpeed web server is required in order to use the LiteSpeed Exclusive Features of this plugin. See Plugin Features above for details.
LiteSpeed Web Server Enterprise with LSCache Module (v5.0.10+)
OpenLiteSpeed (v1.4.17+) – Free and open source!
LiteSpeed WebADC (v2.0+)
Any single server or cluster including a LiteSpeed server will work.
The General Features may be used with any web server. LiteSpeed is not required.
The cache entries are stored at the LiteSpeed server level. The simplest solution is to use LiteSpeed WebADC, as the cache entries will be stored at that level.
If using another load balancer, the cache entries will only be stored at the backend nodes, not at the load balancer.
The purges will also not be synchronized across the nodes, so this is not recommended.
If a customized solution is required, please contact LiteSpeed Technologies at [email protected]
NOTICE: The rewrite rules created by this plugin must be copied to the Load Balancer.
The actual cached pages are stored and managed by LiteSpeed Servers.
Nothing is stored within the WordPress file structure.
Yes it can work well with OpenLiteSpeed, although some features may not be supported. See Plugin Features above for details. Any setting changes that require modifying the .htaccess file will require a server restart.
In short, yes. However, for some WooCommerce themes, the cart may not be updated correctly. Please visit our blog for a quick tutorial on how to detect this problem and fix it if necessary.
As of version 1.0.10, you may simply add define('LSCACHE_NO_CACHE', true); sometime before the shutdown hook, and it should be recognized by the cache.
Alternatively, you may use the function xxxLiteSpeed_Cache_Tags::set_noncacheable(); for earlier versions (1.0.7+).
If using the function, make sure to check that the class exists prior to using the function.
Please see our API wiki for more information and to learn what else you can do to integrate your plugin with LSCWP.
Not automatically. LSCWP v1.6+ can optimize your images by request. Navigate to LiteSpeed Cache > Image Optimization.
Our API includes a function that uses ESI to “punch a hole” in a cached page for a nonce. This allows the nonce to be cached for 12 hours, regardless of the TTL of the page it is on.
Quick start: replace wp_create_nonce( 'example' ) with method_exists( 'LiteSpeed_Cache_API', 'nonce' ) ? LiteSpeed_Cache_API::nonce( 'example' ) : wp_create_nonce( 'example' ).
Learn more on our API wiki.
Use:
to replace
NOTE: The id can be changed, but the div id and the ajax function must match.
Replace the ajax query in wp-content/plugins/wp-postviews/postviews-cache.js with
jQuery.ajax({
type:"GET",
url:viewsCacheL10n.admin_ajax_url,
data:"postviews_id="+viewsCacheL10n.post_id+"&action=postviews",
cache:!1,
success:function(data) {
if(data) {
jQuery('#postviews_lscwp').html(data+' views');
}
}
});
Purge the cache to use the updated pages.
The crawler is disabled by default, and must be enabled by the server admin first.
Once the crawler is enabled on the server side, navigate to LiteSpeed Cache > Crawler and set Activation to Enable.
For more detailed information about crawler setup, please see our wiki.
LSCWP has a “Basic View” and an “Advanced View.” While in Basic View, you will see the following settings tabs: General, Cache, Purge, Excludes, and (optionally) WooCommerce. These are all that is necessary to manage the LiteSpeed Cache.
Click on the Advanced View link at the top of the page, and several more tabs will be revealed: Optimize, Tuning, Media, CDN, ESI, Advanced, Debug, Crawler. These tabs contain more expert-level cache options as well as non-cache-related optimization functionality.
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Ratings
4.9
976 reviews
Rating breakdown
Details Information
Version
2.9.9.1
First Released
27 Jan, 2016
Total Downloads
7,501,647
Wordpress Version
4.0 or higher
Tested up to:
5.2.4
Require PHP Version:
-
Tags
Contributors
Languages
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