Node.js & Libuv•Part 4: Express, Fastify, APIs & Middleware (36 - 50)
Express Middleware Execution Pipeline.
In Simple Words:
Middleware functions form an array queue. Each function receives (req, res, next). Calling next() advances execution to the next middleware in the chain. Calling res.send() terminates the pipeline.
javascript
app.use((req, res, next) => {
console.log(`Incoming ${req.method} ${req.url}`);
next(); // Pass to next handler
});