What are the best practices for cache invalidation?

What are the best practices for cache invalidation?

Cache invalidation is crucial for maintaining data consistency. Some best practices include using time-based expiration, versioning your cache, and implementing a cache-aside pattern.

Can you explain the cache-aside pattern?

Sure! In the cache-aside pattern, the application code is responsible for loading data into the cache. When data is needed, it first checks the cache; if it's not there, it retrieves it from the database and updates the cache.

What are the risks of not invalidating the cache properly?

Not invalidating the cache can lead to stale data being served to users, which can cause inconsistencies and errors in your application.

How often should I invalidate my cache?

The frequency of cache invalidation depends on the nature of your data. For frequently changing data, consider shorter expiration times or event-driven invalidation.