March 2019
Intermediate to advanced
356 pages
10h 7m
English
Content preview from Mastering Ceph - Second Edition
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What is a bloom filter?
A bloom filter is used in Ceph to provide an efficient way of tracking whether an object is a member of a HitSet without having to individually store the access status of each object. It is probabilistic in nature, and although it can return false positives, it will never return a false negative. This means that when querying a bloom filter, it may report that an item is present when it is not, but it will never report that an item is not present when it is.
Ceph's use of bloom filters allows it to efficiently track the access to millions of objects without the overhead of storing every single access. In the event of a false positive, it could mean that an object is incorrectly promoted; however, the probability of ...
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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.