Rails Database Connection Pooling Explained | Prateek Codes - Learn Building Scalable Backend Systems

Every Rails application that handles multiple concurrent requests needs an efficient way to manage database connections. Without proper connection management, your app could create a new database connection for every request, quickly overwhelming your database server. This is where connection pooling comes in. The Problem: Why Connection Pooling Matters Creating database connections is expensive. Each new connection requires: Network handshake between app and database Authentication verification Memory allocation on both client and server Connection state initialization.