Building a High-Performance REST API in Go with Connection Pooling
go
dev.to
Most Go HTTP servers work fine until they hit real traffic. The typical failure mode: everything passes local testing, then under load you see timeouts, "too many open files" errors, or database exhaustion. The fix almost always involves tuning connection pooling — something the standard library and popular ORMs configure poorly by default. This guide covers practical connection pooling for both the HTTP server side and the database side, with working code you can drop into production.