The real serverless compute to database connection problem, solved

This post addresses the serverless compute to database connection problem, clarifying that the issue is not the number of connections but connection leaks due to function suspension. It explains how traditional serverless platforms struggle with this due to their VM lifecycle. The post introduces Vercel Fluid Compute's `waitUntil` feature as a solution, enabling functions to stay alive to close idle database connections before suspension. A simple code snippet using `attachDatabasePool` demonstrates this solution. It also discusses cost implications and best practices like configuring low connection idle timeouts and defining pools globally.