Postgres 큐를 건강하게 유지하기

When using Postgres as a job queue in shared database environments, performance degradation stems not from queue throughput itself but from dead tuple accumulation caused by slow or concurrent queries blocking the MVCC horizon. Understanding these MVCC mechanics and implementing resource controls—such as PlanetScale's Traffic Control—are critical for maintaining queue health at scale when multiple workloads compete for the same database instance.