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#Vitess sharding

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Building PlanetScale from Scratch: A Deep Dive into Distributed Database Infrastructure

Aug 4, 2026·3 min

Building PlanetScale from Scratch: A Deep Dive into Distributed Database Infrastructure

A deep dive into PlanetScale's core database infrastructure architecture, covering compute-storage separation, Vitess shard routing, multi-replica HA, and zero-downtime schema changes.