WP Super Cache
When you’ve got a lot of traffic hitting your servers, there ain’t nothing wrong with serving static: static HTML pages that is. Pro tip: WP Super Cache was highly recommended by our pros in Locking Down WordPress.
When we asked our WordPress pros about plugins they can’t live without, to a person, they all mentioned WP Super Cache. Your server can sweat doing the heavy lifting of PHP files. WP Super Cache lightens the load by creating static HTML pages that can be served to the vast majority of your site visitors. With a 4.1 star rating out of five stars, and three and a half million downloads, you know you can count on it.