挂载新的Azure CloudDrive快照时保留缓存

Question

The local cache for Azure CloudDrive is great for performance.

I recreate a new snapshot every 20 minutes, with little change or maybe no change at all in each snapshot.

To use the new snapshot, what I done is:

cloudDrive.Unmount();
cloudDrive = storageAccount.CreateCloudDrive(newSnapshotUri);
cloudDrive.Mount(size, option);

I like to know, will the old cache still be use for the new mount snapshot? Or the whole cache has to be rebuild again?

Answer 1

This is purely an educated guess, but I assume the cache is rebuilt. My reasoning is that you can't know when you mount the new snapshot what data is the same and what's different, so it would be impossible to figure out what to invalidate in the cache.