Your Postgres constraints may be capping ingest throughput. Learn how FOREIGN KEY and UNIQUE checks slow high-rate inserts, plus four fixes that protect integrity.

The autovacuum process has been dutifully tending Postgres tables since version 8.1, and almost every release since has acquired some new refinement: smarter thresholds, insert-aware triggering,...

With backups being such a vital part of keeping your data safe, how do they actually work?

Amazon Aurora PostgreSQL 大版本升级有多种方案可供选择。本文聚焦于手动蓝绿部署（Clone + 原生 Pub/Sub）方案，深入介绍如何利用 PostgreSQL 原生逻辑复制能力，以分钟级停机时间完成 Aurora PostgreSQL 大版本升级。 文中以 PostgreSQL 13 升级至 PostgreSQL 17 为例进行说明，相同步骤适用于其他...

IntroductionTraditionally, auditing is a tedious process that often requires detailed...

In my previous blog on the pgEdge Vectorizer and RAG Server, I showed how to build a semantic search pipeline using dense vector embeddings. The RAG Server already did hybrid search, combining...

Postgres Summit US 2026 (formerly: PGConf NYC) will take place September 30 - October 2, at Convene, in New York. EDB is joining the event as a sponsor at the Gold-level. Our team of Postgres...

What happens to old row versions after nobody needs them? They become dead tuples, and over time they bloat your tables. Go deeper into PostgreSQL MVCC with runnable psql examples.

Postgres 19引入了CHECKPOINT命令的新功能，DBA可以选择FAST和SPREAD两种模式来优化写入性能。FAST模式快速完成检查点，而SPREAD模式则平滑写入，减少对存储的冲击。此外，新增的FLUSH_UNLOGGED选项允许手动刷新未记录表的数据。这些改进提升了CHECKPOINT的灵活性，以满足不同的数据库管理需求。

Postgres 19计划将默认的TOAST压缩算法从pglz更改为LZ4，LZ4在压缩速度和压缩比上优于pglz，更适应现代硬件。Postgres使用统一的压缩框架，自动对可变长度类型进行压缩，TOAST的实现将继续优化压缩算法以解决数据存储问题。

PostgreSQL的元命令是数据库管理员日常管理的重要工具，帮助高效导航和控制数据库会话。常用的元命令如\d系列可用于发现数据库对象和查看元数据，简化重复任务，监控会话，提升查询性能。元命令与SQL相辅相成，前者提供数据库环境的洞察，后者用于数据操作。

数据库分片是扩展Postgres和MySQL的有效方法，尤其适用于数据超过几TB的情况。通过将数据和查询分布到多个服务器，分片解决了单一数据库的瓶颈问题。应用程序可以通过代理层和负载均衡器与多个分片进行交互。Neki和Vitess是处理大规模数据库复杂性的关键工具。