Monitoring Express Route Performance with AppSignal

A practical guide to monitoring Express route performance using AppSignal. Covers why Express routes are hard to debug in production (Node.js event loop, concurrency, real data), how to set up AppSignal for a Node.js/Express app, generate test traffic with autocannon, and analyze route performance using AppSignal's dashboard. The workflow involves starting at the route level to spot patterns, then drilling into traces and spans to identify specific bottlenecks like slow queries or blocking handlers.