July 2018
Beginner to intermediate
349 pages
10h 8m
English
Content preview from Streaming Systems
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Chapter 4. Advanced Windowing
Hello again! I hope you enjoyed Chapter 3 as much as I did. Watermarks are a fascinating topic, and Slava knows them better than anyone on the planet. Now that we have a deeper understanding of watermarks under our belts, I’d like to dive into some more advanced topics related to the what, where, when, and how questions.
We first look at processing-time windowing, which is an interesting mix of both where and when, to understand better how it relates to event-time windowing and get a sense for times when it’s actually the right approach to take. We then dive into some more advanced event-time windowing concepts, looking at session windows in detail, and finally making a case for why generalized custom windowing is a useful (and surprisingly straightforward) concept by exploring three different types of custom windows: unaligned fixed windows, per-key fixed windows, and bounded sessions windows.
When/Where: Processing-Time Windows
Processing-time windowing is important for two reasons:
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For certain use cases, such as usage monitoring (e.g., web service traffic QPS), for which you want to analyze an incoming stream of data as it’s observed, processing-time windowing is absolutely the appropriate approach to take.
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For use cases for which the time that events happened is important (e.g., analyzing user behavior trends, billing, scoring, etc.), processing-time windowing is absolutely the wrong approach to take, and being able to recognize these cases ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.