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In version 5.3, MongoDB introduced a feature called clustered collection which stores documents in the _id index as oppose to the hidden wiredTiger hidden index. This eliminates an entire b+tree seek for reads using the _id index and also removes the additional write to the hidden index speeding both reads and writes.
However like we know in software engineering, everything has a cost. This feature does come with a few. In this video I discuss the following
0:00 Intro
1:00 How Original Collections Work
6:50 How Clustered Collections Work
10:00 Benefits
17:00 Limitations
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Негізгі бет Ғылым және технология Clustered Collections makes Mongo faster but there is a cost
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