Preventing PostgreSQL Connection Starvation: A Practical Guide to Pool Configuration, QueuePool Auditing, and Real-Time Exhaustion Detection In high-throughput microservices and web applications backed by PostgreSQL, connection starvation is one of the most fatal reliability bottlenecks. When an application exhausts its connection pool, incoming HTTP requests stall, queues accumulate backpressure, and systems cascade into widespread HTTP 500 outages. While connection poolers such as PgBo...