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PostgreSQL Under Load is written for experienced software engineers, database administrators, SREs, and systems engineers who need to understand how PostgreSQL behaves when it actually matters: under sustained or sudden concurrency, when connections pile up, locks collide, autovacuum falls behind, or replication drifts. This book explains the mechanisms that govern PostgreSQL's behavior, its process model, MVCC snapshots, locking system, WAL durability guarantees, and vacuuming architecture, not as isolated features but as an interconnected system where every configuration choice and application pattern has consequences under load. You will learn how to configure PostgreSQL correctly, diagnose production incidents systematically, design resilient architectures, and reason about performance and correctness when the traffic is real.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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