If you deploy a WordPress site on a server running OpenLiteSpeed tech stack, the LiteSpeed Cache plugin will be installed on your site automatically.

LiteSpeed Cache provides you with real-time data on your page load time and PageSpeed score, so you can monitor your site’s performance and make adjustments as needed. You can also enable guest mode to allow visitors to enjoy the benefits of LiteSpeed Cache without logging in.

In addition, LiteSpeed Cache gives you access to advanced features such as public and private cache, object and browser cache, critical CSS, unique CSS, low quality image placeholder, and viewport image.

LiteSpeed Cache comes with powerful presets built-in. You can choose one of these presets to configure your website with a single click.

There are four presets: Essentials, Basic, Advanced, and Aggressive. Each preset enables a set of features that are suitable for different levels of optimization and risk. The higher the optimization level, the more features are enabled, but also the more likely it is that you may encounter some conflicts or issues.

To use a preset, simply click on the Apply Preset button next to it. You can also import or export your own presets using the Import / Export tab.

If you see some inconsistent behavior, you can purge the existing cache. Purging the cache means deleting the cached copies of your web pages or files, so that they can be regenerated with the latest changes. This can be done from within the WordPress dashboard itself. You can purge the cache by clicking the appropriate button, depending on what you want to clear. 

You can also purge the cache by using specific criteria, such as category, post ID, tag, or URL. You can enter one or more values in the text box below, and click on Purge List. For example, you can enter a category-name to purge all the pages under that category.

For more information about purging cache and how it works, you can visit the LiteSpeed Cache documentation.