November 2017
Beginner to intermediate
290 pages
7h 34m
English
book
Learning Apache Apex
by Ananth Gundabattula, Thomas Weise, Munagala V. Ramanath, David Yan, Kenneth Knowles
Content preview from Learning Apache Apex
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Session Windows
Session Windows are windows that model after sessions. For example, one session could represent each time a user visits a website. Unlike Time Windows and Sliding Time Windows, Session Windows have variable durations and are based on the key of the tuple. If we want to process the activity data based on each time a user visits a website, the key of the tuple could be the user ID. Each tuple is assigned to exactly one window. It takes a duration parameter minGap, which specifies the minimum time gap between any two tuples that belong to two different Session Windows of the same key:
When a tuple arrives, the WindowedOperator ...
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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.
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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.