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May 5, 2024 · Databases

What GitLab’s 34k‑Line Postgres Schema Reveals About Scalable Database Design

This article examines GitLab’s extensive PostgreSQL schema, explaining why the project uses a pure‑SQL structure file, how primary‑key choices, internal versus external IDs, naming conventions, timestamps, text types, partitioning, GIN indexes, JSONB columns, foreign‑key strategies and other data‑type decisions impact performance, maintainability, and scalability.