PostgreSQL Tutorial: Tuning Database Connections Under Linux
Scaling Postgres’s high-concurrency handling capability can never rely on simply throwing more hardware at the problem. Each database connection incurs a hidden system tax, including Linux-level memory and CPU overhead, as well as Postgres-level MVCC (Multi-Version Concurrency Control) and locking constraints. To handle high-performance workloads, we need to stop guessing and start precisely tuning our systems by deeply understanding these underlying limitations.
