postgres-tuning

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 sharedbuffers and workmem, optimizing indexes for write-heavy workloads, managing table bloat, pgvector HNSW tuning.

When NOT to use: Schema design (use a data modeling tool), application-level caching strategy, database selection decisions, ORM query generation.

PostgreSQL 17/18+ 性能调整和优化。涵盖异步 I/O 配置、查询计划取证、索引策略、autovacuum 调整、向量搜索优化、连接池、声明性分区和实用查询模式。在诊断慢查询、配置异步 I/O、调整 autovacuum、优化向量索引、使用 EXPLAIN BUFFERS 分析执行计划、配置 PgBouncer 或连接池、设置表分区、实现游标分页或优化队列处理时使用。 来源：oakoss/agent-skills。