WordPress generates pages dynamically on every request, which uses server resources and can be slow. Caching plugins create static HTML copies of your pages so the server can serve them instantly without running PHP or database queries on each visit.
LiteSpeed Cache (built-in on our servers)
Ultra Web Hosting servers run LiteSpeed/LSAPI, which makes LiteSpeed Cache the best-performing option. Install the LiteSpeed Cache plugin from WordPress > Plugins > Add New, and it works out of the box with server-level caching. For other options, WP Super Cache and W3 Total Cache are also popular.
01. How Static Caching Works
When a visitor loads a page, the caching plugin saves the generated HTML as a static file. The next visitor gets the static file directly, skipping PHP execution and database queries. This can make your site 5-10x faster and dramatically reduce server resource usage.
02. Setting Up LiteSpeed Cache
- Install LiteSpeed Cache from Plugins > Add New
- Go to LiteSpeed Cache > Cache and enable "Enable Cache"
- Default settings work well for most sites
- Purge cache after making site changes: LiteSpeed Cache > Toolbox > Purge All
For comprehensive performance optimization, see Optimize WordPress Performance and How to Speed Up Your Website.
Do not run multiple caching plugins at the same time. They will conflict and can cause blank pages or stale content. Pick one (LiteSpeed Cache is recommended on our servers) and disable/delete the others.
Site Still Slow After Caching?
Caching helps with delivery speed but does not fix underlying performance problems. See our optimization guides or open a ticket.
Open a Support TicketQuick Recap
- Caching creates static HTML files from dynamic WordPress pages
- LiteSpeed Cache recommended on our servers
- 5-10x speed improvement typical
- Only use one caching plugin
- Purge cache after changes to see updates
WordPress performance · Last updated March 2026 · Browse all WordPress articles
