Caching is one of the most effective ways to make WordPress faster. It stores ready-made versions of your pages so they do not have to be rebuilt for every visitor. This guide explains the types of caching and how to set them up.
What caching does #
Without caching, WordPress builds each page from scratch on every visit, running PHP and database queries each time. Caching saves the finished result and serves that instead, which is dramatically faster and lighter on the server.
The layers of caching #
- Page caching: stores full HTML pages; the biggest single win.
- Browser caching: lets returning visitors reuse files they already downloaded.
- Object caching: caches database query results.
- CDN caching: serves static files from servers near your visitors.
Setting up caching #
- Check whether your host already provides server-level caching (many do).
- If not, install a reputable caching plugin.
- Enable page caching and browser caching in its settings.
- Enable a CDN for static files if available.
- Clear the cache and test your site.
Test the difference #
Run your site through a free speed-testing tool before and after enabling caching. You should see a clear improvement in load time, especially for repeat visits.
Important: clear cache after changes #
When you update your site but still see the old version, clear the cache so fresh pages are served. Remember there may be several layers (plugin, server, CDN, browser).
Troubleshooting #
- Changes not appearing: clear all cache layers.
- Site looks broken after enabling: disable minification or combine options that conflict.
- Two caching tools fighting: use only one caching plugin.
Need help? #
Disoh includes caching and a CDN. If you need a hand setting it up, our support team can help over live chat.
