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UUID v4 vs. UUID v7 vs. ULID in 2026: Database Index Performance, B-Tree Fragmentation, Collision Mathematics, and RFC 9562 Migration Guide For more…
В каждом бэкенде рано или поздно рядом появляются id , UUID , slug , token и request_id . Все они выглядят как строки, но отвечают за разные вещи. К…
TL;DR Built a PostgreSQL extension that creates UUIDs looking like random v4 but containing hidden timestamps. Result: 50% smaller indexes with perf…
I spent a while wondering why inserts on a particular table were getting slower as it grew. The table had a UUID v4 primary key and a few indexes. T…