Power Pages websites use server-side caching to improve the website’s scalability and performance. This caching occurs on the application server and stores data retrieved from Microsoft Dataverse. It’s distinct from browser-based caching or content delivery network (CDN) caching, which focus on static resources.

Automatic Caching

All configuration table data is identical for all users and is automatically cached. This cache is updated automatically whenever a record in any configuration table is modified. This automatic update has a service level agreement (SLA) of 15 minutes, meaning any configuration changes will be reflected on the website within 15 minutes.

Manual Cache Clearing

In situations where immediate visibility of record changes is crucial, you can manually clear the cache using the following methods:

• Design Studio: In Design Studio, click the “Preview” option.
• URL: Navigate to powerpagesportalurl/_services/about in a seperate browser window. Here, you’ll see options for “Clear Cache” and “Clear Config.”

Note: To utilize last URL navigation in browser, you must have website access permissions with the admin role. Otherwise, these options will be unavailable.

References: https://learn.microsoft.com/en-us/power-pages/admin/clear-server-side-cache