To ensure optimal performance and security, WP.pro and your WordPress installation utilizes several types of caches. Depending on your changes, you may need to purge caches periodically. Here’s an overview of the caches involved and guidance on which cache to purge when making changes.
Overview of Caches in WP.pro
PHP OpCode Cache
Function | Speeds up PHP execution by storing precompiled script bytecode in memory. |
Managed by | WP.pro |
When to Purge | After updating PHP scripts or configurations. |
How to Purge | User Interface (CDN ➡ Caching ➡ OpCode Cache ➡ Purge Cache) or API |
Auto Purging | WP.pro automatically monitors for file changes and purges the PHP OpCode Cache whenever .php files are modified. |
Page Cache
Function | Stores static versions of dynamic pages. |
Managed by | WordPress Plugin (if activated) |
When to Purge | After making changes to content or page templates. |
How to Purge | Via your WordPress Plugin |
Auto Purging | Please see your plugins documentation |
Database Cache
Function | Caches database query results. |
Managed by | WP.pro |
When to Purge | After making changes to the database or content that relies on database queries. |
How to Purge | User Interface (CDN ➡ Caching ➡ SQL Cache ➡ Purge Cache) or API |
Auto Purging | Depends on the configured TTL (learn more) |
CDN Cache
Function | Caches assets like images and css files (and, if configured, pages) at various edge locations around the world. |
Managed by | WP.pro |
When to Purge | After updating any public-facing content or assets. |
How to Purge | User Interface (CDN ➡ Caching ➡ CDN ➡ Purge Cache) or API |
Browser Cache
Function | Instructs browsers to store static files (like images, CSS, and JavaScript) locally. |
Managed by | User |
When to Purge | After updating static assets such as images, stylesheets, or scripts. |
How to Purge | Change the file name or append "?version=xy" to the resource. You can't directly control a user's browser once a file is cached, but you can influence caching durations beforehand using WP.pro site rules. |
By understanding these caches and knowing when to purge them, you can ensure that your WordPress site remains fast, secure, and up-to-date with the latest changes.