May 2018
Beginner to intermediate
384 pages
10h 19m
English
book
Artificial Intelligence for Big Data
by Anand Deshpande, Manish Kumar, Albenzo Coletta, Giancarlo Zaccone
Content preview from Artificial Intelligence for Big Data
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Stream processing semantics
As the events are triggered in a system, there are messages (data packets) which are generated at source and processed within the processing engines. There are three distinct semantics for the stream processing systems, at least once, at most once, and exactly once:
- At least once: In this case, the message may be sent by the source more than once. However, the processing engine needs to guarantee that one message is processed at least once out of multiple transmissions of the same message. It is possible that the message is processed more than once and may be acceptable in certain use cases. The end application may need to run a de-duplication check on the semantics.
- At most once: The stream processing application ...
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