UUIDv4 vs UUIDv7 in PostgreSQL: A B-Tree Index Performance Deep Dive

Migrating MedicoSync: UUIDv4 → UUIDv7 (Why I'm doing it, and why it's cheap to defer) When building MedicoSync (an open-source FastAPI + PostgreSQL medical records platform), hiding internal database IDs was a key requirement on Day 1 [source: 0.1.1]. The Problem with Integers: Simple sequential num

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