What are some examples of cache consistency issues?

What are some examples of cache consistency issues?

Cache consistency issues occur when multiple caches have different versions of the same data. For example, if one user updates a record in their cache, but other users see an outdated version, that's a cache consistency issue.

Can you give me a specific scenario where this happens?

Sure! Imagine a social media platform where users can like posts. If User A likes a post, their cache updates immediately, but User B, who is viewing the same post, might still see the old like count until their cache refreshes.

How can these issues be resolved?

These issues can be resolved using techniques like cache invalidation, where caches are updated or cleared when data changes, or by implementing a centralized data store that ensures all caches are synchronized.

What are the implications of not addressing these issues?

If cache consistency issues are not addressed, it can lead to data integrity problems, user confusion, and a poor user experience, as users may see outdated or incorrect information.