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A cache is a component that transparently stores data so that future requests for that data can be served faster. The data that is stored within a cache might be values that have been computed earlier or duplicates of original values that are stored elsewhere.

6 votes

How can I improve site/page performance of WordPress websites?

The most common thing to try is a content caching plugin like W3 Total Cache or WP Super Cache. … With W3 Total Cache, you can also cache system objects and the results of database queries, as well as using a CDN (Content Distribution Network) or a local memory cache server such as memcached, APC, …
Dougal Campbell's user avatar
22 votes

Steps to optimize WordPress in regard to server load and website speed?

Minimize the number of plugins you run to only what you really need. Especially be aware of plugins that add javascript and CSS code on every page load, even when that code isn't being used on the pag …
Dougal Campbell's user avatar