How do I implement cache coherency in my application?

How do I implement cache coherency in my application?

To implement cache coherency, you can use techniques like write-through, write-back, or directory-based protocols. Which one are you considering?

I'm not sure. Can you explain the differences between them?

Sure! Write-through ensures data is written to both cache and main memory simultaneously, while write-back only updates the cache and writes to memory later. Directory-based keeps track of which caches have copies of data.

What are the pros and cons of each method?

Write-through is simpler but can be slower due to frequent memory writes. Write-back is faster but more complex, as it requires managing dirty data. Directory-based can be efficient in multi-core systems but adds overhead.

Which method would you recommend for a multi-threaded application?

For multi-threaded applications, directory-based cache coherency is often recommended as it efficiently manages data consistency across multiple threads.