What are the best practices for cache invalidation?

What are the best practices for cache invalidation?

Cache invalidation is crucial for ensuring that users receive the most up-to-date data. Some best practices include using time-based expiration, implementing versioning, and leveraging event-driven invalidation.

Can you explain time-based expiration?

Time-based expiration involves setting a specific duration after which cached data is considered stale and is automatically removed or refreshed. This helps balance performance and data accuracy.

What is event-driven invalidation?

Event-driven invalidation triggers cache updates based on specific events, like data changes. This ensures that the cache reflects the latest data without relying solely on time.

How do I implement versioning in cache?

To implement versioning, you can append a version number to your cache keys. When data changes, increment the version number, forcing the cache to fetch the new data.

Are there any tools that can help with cache management?

Yes, tools like Redis, Memcached, and Varnish can help manage caching and provide features for cache invalidation.