PostgreSQL Tuning Overview Optimizes PostgreSQL 17/18+ performance across I/O, query execution, indexing, and maintenance. Covers the native AIO subsystem introduced in PostgreSQL 18 for throughput gains on modern storage, forensic query plan analysis with EXPLAIN BUFFERS (auto-included in PG18), B-tree skip scans for composite indexes, native UUIDv7 generation, and autovacuum tuning for high-churn tables. When to use: Diagnosing slow queries, configuring async I/O, tuning shared buffers and work mem, optimizing indexes for write-heavy workloads, managing table bloat, pgvector HNSW tuning. Wh…