WordPress on Kubernetes

When we refer to “caching in WordPress” most users will think of some popular page caching plugins, or performance optimization plugins and tools. There is, however, a little more to it.

In this article we’ll take a step back and explore all the different layers where caching comes into play in a typical WordPress application. We’ll cover remote and runtime object caching, transient caching, query caching, fragment caching and of course page caching.

Caching 101

Given that you’re reading a tutorial about hosting WordPress in a Kubernetes cluster, we’re going to make an assumption that you have some familiarity with the term “caching”.

Whether it’s that thing that makes a slow website go fast, or perhaps that thing that you need to “flush” to fix things that may seem broken, caching is something that most WordPress users have dealt with at one point or another.