How does cache consistency work?

Can you explain how cache consistency works in distributed systems?

Sure! Cache consistency ensures that all copies of data in different caches reflect the same value, preventing stale data.

What are the common strategies to maintain cache consistency?

Common strategies include write-through, write-back, and invalidation methods, each with its own trade-offs.

How does the invalidation method work?

In the invalidation method, when data is updated, all caches holding that data are notified to invalidate their copies.

Are there any challenges with maintaining cache consistency?

Yes, challenges include network latency, the complexity of synchronization, and the potential for increased load on the system.