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The Percona Database Performance Blog

Technical guides, deep dives, and perspectives across MySQL, PostgreSQL, MongoDB, Valkey, Redis, and more.

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October 16, 2026
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Zelmar Michelini
“MongoDB was slow on Thursday”: answering the app team with mongo-health
Monday, 9:00. The app team writes: “MongoDB was slow on Thursday afternoon. What happened?” No alert fired, nobody looked at the time, and...
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