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Just came here to post this comment. I feel like they must've known this when creating the terminology, so I can only imagine they called it "duality" because t
by mehrdadn 6y ago
Just came here to post this comment. I feel like they must've known this when creating the terminology, so I can only imagine they called it "duality" because they wanted it to sound cool. But it's most definitely not duality and I would wager calling it that is actively harmful. Last thing you want is someone implementing a table under some misled impression that it can do everything a stream can!
- eternalban 6y agoThis Confluent blog is a rehash of earlier conceptual position statement of Jay Kreps, who is now the boss of the Confluent blogger. https://engineering.linkedin.com/distributed-systems/log-what-every-software-engineer-should-know-about-real-time-datas-unifying https://engineering.linkedin.com/distributed-systems/log-wha... Pointing out (GP and yourself) that this is an 'asymmetric duality' is informative and valid.
- wenc 6y agoThank you -- it's food for thought. A symmetric dual is one where there is equivalence: the dual of the dual is the primal. But it is possible to have a "weak" duality that is assymmetric, where the dual encompasses the primal -- where there are regions of equivalence instead of a 1-to-1 equivalence. I'm not sure if stream-duality fits this conceptual mold exactly but thank you for providing a counterpoint to my assertion. I'm going to think on it.
- eternalban 6y agoIf one computes in a bounded time domain, then it is symmetric: a table is a ‘time slice’ of a stream.
- goatinaboat 6y agoso I can only imagine they called it "duality" because they wanted it to sound cool Also, that you believing it is the most profitable mindset - for them. Company blogs are marketing, first and foremost.