There are several caching plugin options to improve website speed performance, including the popular ones:

Each plugin has a different setup method. Here’s how to setup the WP Fastest Cache plugin, which I quoted from the blog Herman Yudiono, founder Blogodolar.

Check the following options:

Cache System – Serves to create a system cache.
Preload – Serves to create cache automatically.

Setting > Preload

• New Post – Serves to clean cache files when a post or page is published.

Setting > New and Update Post

• Update Post – Serves to clean cache files when a post or page is updated.
• Gzip – Serves to reduce the size of files sent from the server.
• Browsing Cache – Serves to speed up loading times for repeat visitors.

Done.