> > > i'm googling for about a week about a possibility of 'locking' in > google app engine. > Since the instances are spread over different servers, how to > 'synchronise' them? > > There is no intrinsic lock mechanism for doing the "IPC" for requests. I have asking for this feature for several times. Some guys always argue that the lock is not necessary or useless. Finally, smart Stephen gave a solution by creating a lock-like flag with datastore transaction. See the last post in: https://groups.google.com/group/google-appengine/browse_thread/thread/6377bd9e74c610ed?fwc=1
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