If you’re a WordPress plugin developer, you may have come across the concept of autoloading options. Or you may not, since knowing about autoloading options is, technically speaking, entirely optional when implementing a WordPress plugin that uses options. However, being unaware of the concept of autoloading options can lead to massive performance problems for large WordPress sites. It can notably slow down the server response of sites using your plugin. And by doing that, it hurts their “Time to First Byte” (TTFB), which directly contributes to the Core Web Vitals metric “Largest Contentful Paint” (LCP).
This post is about explaining what autoloading options in WordPress is, how it works, and how plugins should go about it. We’ll go over the basics as well as explore how to use more recently introduced WordPress Core enhancements, including some code examples. This will hopefully help you get to a comprehensive understanding of how to apply autoloading in your WordPress plugins in a way that’s both efficient (for your own plugin’s usage) and responsible (for the overall sites using your plugin, in a gazillion of combinations with other plugins).
