Build a tiny HTTP handler step by step
Construct a minimal Node.js HTTP handler that routes by method/path and returns structured JSON.
Build a minimal Node.js HTTP handler for GET /health that returns JSON and rejects unknown routes cleanly. Request -> route decision -> response contract. The novice move is to write res.end('ok') for every path. It looks alive, but clients cannot distinguish health, missing routes, or server errors. Step 1 Create the server with a request listener that receives req and res. The listener is the transaction boundary: one incoming message, one outgoing response. Step 2 Check req.method === 'GET' and req.url === '/health' before writing the body. Routing is a decision. You should know which contract you are fulfilling before…
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