Julian Edwards wrote: > On Thursday 08 October 2009 22:21:20 Aaron Bentley wrote: >> I don't think so. It's no coincidence that Muharem presented a Job >> system as a use case at the Epic. Polling will never be as responsive >> or efficient as messaging. > > I disagree with the word "never". > > I am a huge fan of messaging systems and I have a lot of experience > with them and also with polling-based solutions. > > Consider the situation where you have several updates causing diff > requests on the same branch. You're only interested in the last > change; with a message for each diff request, calculating the diffs > in-between is a waste as you will throw them away with subsequent diff > processing. If you were to periodically poll, you would see only the > most recent change and work with that. > > This is a slightly contrived example but you get my drift. > > Basically, there is a trade-off between responsiveness and efficient > processing.
I forgot to mention that this trade-off is much less of an issue for operations that may be easily/safely cancelled. Pushing to a branch would e.g. generate a diff generation request as well as a cancellation request for any diff generation operations in progress. Best regards -- Muharem Hrnjadovic <[email protected]> Public key id : B2BBFCFC Key fingerprint : A5A3 CC67 2B87 D641 103F 5602 219F 6B60 B2BB FCFC
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