Cache invalidation is a process that automatically updates your cached content without requiring manual intervention. It ensures that visitors always see the latest version of your website while still benefiting from the speed advantages of cached pages.
This means that whenever you update your website, NitroPack refreshes the cache in the background—without slowing down your site or requiring manual intervention.
When a file is invalidated, it’s marked as outdated, and a new version is prepared in the background. This method prevents slow load times while ensuring that site changes are reflected as soon as the updated cache is ready.
Why does Cache Invalidation matter?
Keeping your cache updated is crucial for maintaining fast page speeds while delivering fresh content. Without cache invalidation, you would have to manually purge your cache every time a change is made, which can lead to performance slowdowns and increased server load.
With Smart Cache Invalidation, NitroPack ensures that:
✅ Visitors always see fast pages – Your existing cached pages remain available while new cache versions are generated in the background.
✅ Website changes are detected automatically – NitroPack identifies updates and refreshes the cache without any manual effort.
✅ Server resources are optimized– Instead of purging the entire cache, only the necessary files are updated, reducing server strain.
Cache Invalidation vs. Cache Purging
While both processes update your website’s cache, they serve different purposes:
Cache Invalidation: Marks old cache versions as outdated and replaces them in the background while continuing to serve cached pages to visitors.
Cache Purging: Immediately deletes the cache and forces new versions to be generated, which can lead to slower load times and higher server usage.
When to use Cache Invalidation:
✔ When you make small content updates that don’t require immediate changes.
✔ When you want to refresh cache without disrupting the user experience.
When to use Cache Purging:
✔ When you need instant updates, such as pricing changes on an eCommerce site.
✔ When performing a complete redesign or site migration.
💡 Have questions? Visit our Help Center or contact support for expert assistance.