LiteSpeed Cache vs WP Rocket: The Comparison
Before we do a comparison of specific feature lists, let’s talk about some of the main similarities and differences between the two plugins.
LiteSpeed Cache vs WP Rocket: Caching
Both plugins provide full page caching for WordPress.
This basically means that they store static snapshots of the pages on your site. They can do this because the dynamically generated pages are effectively the same every time they are created. Rather than having your visitors wait for WordPress and PHP to assemble the pages for each request, a page cache can serve snapshots to them much faster.
Caching with WP Rocket
WP Rocket, like most other WordPress caching plugins (including LiteSpeed), uses rewrite rules to tell the server where to look for cached content.
It places the pages in the cache by writing to the file system and purges the pages from the cache by deleting the files. It can tell whether a page is cached or not by checking for the presence of the file. And it can tell if a cached page has expired by comparing the file time to the TTL of the page.
Caching with LiteSpeed
The plugin works the same, with one important difference: the plugin doesn’t actually do caching. The basic functions of LSCache are performed by the built-in cache module of the Litespeed Web Server.
The plugin is provided as an easy way for WordPress to communicate with the cache engine, but it does not perform any of the caching tasks, and the cache files themselves are not stored in the WordPress file structure.
Due to the plugin’s tight integration with the server on one side, and with WordPress on the other, LSCache remembers things about cache entries that other plugins cannot, and can act effectively when content changes. When content is created or modified and needs to be purged from the cache, LSCache uses a tag-based system to identify associated content that also needs to be purged.
This way, there is never too much or too little cache deletion.
Another advantage of LiteSpeed is the support for Gzip and Brotli. This allows compressed content to be stored in the cache, which is suitable for the majority of modern browsers. WP Rocket requires dynamic compression before serving each cached response, resulting in much higher CPU usage in the real world.
In conclusion, the LiteSpeed system is extremely flexible.
LiteSpeed Cache vs WP Rocket: Pricing
A WP Rocket license starts at $ 49 / year. There is no free option or trial version, but they do offer a 14-day money-back guarantee.
The LiteSpeed Cache plugin is 100% free, but a LiteSpeed web server is required to use the server-side cache, and there may be a fee, depending on your needs.
There is a free and open-source version (OpenLiteSpeed), or you can get an Enterprise license. License prices range from Free for single-site owners to $ 96 / month for large hosting companies, with several tiers in between.
LiteSpeed Cache vs WP Rocket: Ecommerce
When you run an online store, there will necessarily be pages (and sections of pages) that cannot be stored in the public cache. Shopping cart pages and the last viewed product widgets are good examples of this.
WP Rocket supports eCommerce solutions like WooCommerce automatically considering that cart and checkout pages cannot be hidden. Pages with this private content are dynamically generated each time and served without caching.
LiteSpeed allows you to cache WooCommerce and other e-commerce pages using ESI (Edge Side includes). With ESI, holes are punched on a public page and filled with shopping cart data and other private content. Then the mixed content page can be served to the buyer, fully cached.
LiteSpeed Cache vs WP Rocket: Premium Services
WP Rocket does not offer any extra premium services.
Cache LiteSpeed offers image optimization, critical CSS generation, and responsive Lazy Load placeholder generation, all for free. These services are performed remotely on our own servers so as not to put additional load on yours.
LiteSpeed Cache vs WP Rocket: Cache preload
WP Rocket and LiteSpeed Cache both have crawlers. These crawlers crawl the site, caching any pages that are not currently cached.
WP Rocket – The crawler simulates a visit from an offline desktop user.
LiteSpeed Cache – The crawler also simulates an offline desktop user visit by default, but can also be configured to explore as a mobile user. Additionally, for sites that use a cache based on user groups varies (i.e. retail vs. wholesale customers), or cookies vary (i.e. visitors with an affiliate cookie), the cache can be crawled by simulating a user logged in from any particular user group or a user with a particular cookie.
LiteSpeed Cache vs WP Rocket: Feature Comparison
Let’s take a closer look at the specific features built into LSCache and WP Rocket. Features are listed using LiteSpeed Cache terminology. If the other plugin calls it something different, we put their term in parentheses.
* The WP Rocket feature list is based on what is publicly listed on the WP Rocket website
LiteSpeed Cache and WP Rocket both have a variety of functions, but caching is the most important. Although both plugins have a full page cache, LiteSpeed’s cache engine is smart and flexible, allowing you to cache more of your site for more visitors.
LSCache gives you the ability to confidently cache frequently changing content and eCommerce sites, without the need for marking pages as “not caches”.
If you use site assessment tools, like Google’s PageSpeed Insights or GTmetrix, you will need a nice selection of optimization features to implement the site improvements suggested by the tool.
Unlike the cache features above, LiteSpeed Cache’s optimization features can be used freely by anyone with any web server (LiteSpeed, Apache, Nginx, etc.)
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