Showing Post From Mongodb
Your Index Has Three Jobs. A Sort Can Break One of Them.
I showed a colleague a query reading 109 documents to return one, and the index it was supposed to be using. He looked at both and said the obvious thing: “that’s not even the same index. It’s got four fields, your query filters on three completely different ones.”
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Two Billion Documents a Week to Produce a List of Numbers
One query. Seven days. Here’s what it cost.
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JaVers From First Principles: How Automatic Audit Logging Actually Works
Somebody asks who changed this invoice’s status last Tuesday, and from what. Your application has to be able to answer, and nobody wants to hand-write that logging on every setter.
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