September 2015
Beginner to intermediate
230 pages
4h 47m
English
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Adding uniqueness with Sorted Sets and HyperLogLog
This section presents two different Time Series implementations that support unique insertions (for example, unique visitors or concurrent video plays), which are very similar to the previous solutions.
The first implementation uses Sorted Sets, and it is based on the previous Hash implementation. The second implementation uses HyperLogLog, and it is based on the previous String implementation. Since these new implementations are very similar to previous ones, only the lines highlighted in bold are explained.
Each solution has pros and cons:
- The Sorted Set solution works well and is 100% accurate
- The HyperLogLog solution uses less memory than the Sorted Set solution, but it is only 99.19% accurate ...
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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.