The current logic of handling expiry lock looks like the following:

long ts = region.nextTimestamp() + region.getTimeout();
// create new lock that times out immediately
Lock newLock = new Lock( ts, uuid, nextLockId.getAndIncrement(), null );
newLock.unlock( ts );
region.put( key, newLock );

The issue here is after we put the new lock, we're unable to load and put value item into the cache during next timeout interval. I think the correct logic could be:

long ts = region.nextTimestamp();
// create new lock that times out immediately
Lock newLock = new Lock( ts, uuid, nextLockId.getAndIncrement(), null );
newLock.unlock( ts );
region.put( key, newLock );

Please correct me if I miss something.