Caching, in a broad sense, means storing "something" in a temporary storage area so that it can be retrieved more quickly. Caching is important because it reduces the load on your WordPress hosting servers and speeds up your website.
1. WP Fastest Cache 2. LiteSpeed Cache 3. W3 Total Cache 4. WP Rocket 5. Cache Enabler 6. WP Super Cache 7. Comet Cache
It is the most popular cache plugin in the WordPress directory. Site administrators can use this plugin to delete all cached files as well as minified CSS and JS files, or schedule them to be deleted at a specific time.
It allows users to set cached files to expire after a period of time, clear the site cache if content has changed, pre-compress cached pages with GZIP, and minify the HTML in cached pages.
It is a free cache plugin developed by Automattic. It’s great for developers and users with technical experience who want more control over the caching process.
Because of its simple, user-friendly interface, it is one of the best caching plugins for beginners. It's a simple WordPress plugin that caches your posts, pages, tags, categories, archives, RSS feeds, and XML sitemaps.