If your website loads slowly, shows outdated content, or produces errors after an update, LiteSpeed cache is often the cause. This article explains how LiteSpeed cache works, which problems occur most frequently, and how to solve them step by step — from clearing the cache to checking plugin settings.
How LiteSpeed cache works
LiteSpeed cache stores a ready-made version of your web page on the server, so that visitors don’t have to have that page rebuilt from the database and code every time. This makes a website significantly faster, but it also means that changes aren’t always immediately visible: the server shows the stored version until the cache is refreshed.
In WordPress, this happens via the LiteSpeed Cache plugin, which works together with the LiteSpeed web server itself. Both levels — server-side and plugin — need to align properly. If this goes wrong, the most common complaints arise: old content, white pages, or a site that no longer responds to changes.
Common problems
Most LiteSpeed cache problems fall into a few categories:
- Outdated content: changes to text, images, or prices aren’t visible after an update.
- White page or error message: after installing a plugin or theme, the site shows nothing anymore.
- CSS/JS not loading correctly: layout looks broken due to aggressive minify or combine settings.
- Login problems: users remain logged out or see an incorrect session due to improper cache exclusions.
- Slowness despite cache: cache isn’t being created due to conflicting plugins or incorrect server configuration.
If you recognize one of these situations, it can almost always be resolved without technical knowledge of server management.
Solving it step by step
Clear the cache completely
In WordPress, go to LiteSpeed Cache > Toolbox and select “Purge All”. This removes both the page cache and object and CSS/JS cache at once.
Check browser and CDN cache
Refresh the page with a hard refresh (Ctrl+F5) and check whether you’re using a CDN that also holds its own cache. Clear this cache separately if necessary.
Temporarily disable optimizations
Temporarily disable CSS/JS minify and combine under Page Optimization. If the problem no longer occurs, you know that this setting was the cause.
Check for plugin conflicts
Temporarily deactivate other caching or optimization plugins. Having multiple cache plugins active at the same time often causes white pages or error messages.
Check server-level cache
Sometimes cache also runs at the server level alongside the plugin. You can find this in Plesk and manage or reset it per domain there.
Optimizing cache settings
Once the cache is working properly again, it’s smart to configure the settings so that problems are less likely to recur in the future:
- Set up an automatic cache purge when updating posts or pages.
- Exclude dynamic pages such as cart and checkout from caching.
- Use a reasonable TTL (validity period) instead of extremely long cache times.
- Test changes first on a staging environment before going live.
If your site runs on a server with Plesk, you’ll find the server settings for LiteSpeed cache and PHP versions clearly organized in the Plesk panel, including the option to clear cache per domain without having to go through WordPress.
If you’re stuck despite these steps, it’s sometimes a sign that the underlying hosting isn’t optimally configured for LiteSpeed. If you’re considering a switch anyway, check out the options to switch to Tandata or read more about web hosting with LiteSpeed servers and NVMe storage. For additional explanations on related topics, the knowledge base is also available.
Frequently Asked Questions
Why am I still seeing old content after clearing the cache?
Check whether a CDN or browser cache is also active. These hold their own copy that needs to be cleared separately.
Can LiteSpeed cache cause a white page?
Yes, especially in combination with aggressive minify/combine settings or a conflicting plugin. Temporarily disable these optimizations to find the cause.
Should I disable cache during maintenance?
It’s advisable to temporarily clear or disable the cache during major changes, so you immediately see the current result.
Does LiteSpeed cache also work without the WordPress plugin?
Yes, server-level caching can work independently of WordPress, but for fine-grained control, the plugin in combination with the server is the common approach.
Conclusion
Most LiteSpeed cache problems can be resolved by completely clearing the cache, temporarily disabling optimizations, and checking for plugin conflicts. With the right settings, you prevent outdated content or slow loading times from returning.