[mdn document])https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/routes)
\nnpm install -g express# Run helloworld on Linux/macOS\nDEBUG=helloworld:* npm startThe DEBUG command creates useful logging, resulting in an output like that shown below.
\n5 Performance Tips for Node.js Applications\n9 Production Ready Node.js Tips and Tricks\nNode.js Performance Tip of the Week: Scaling with Proxies and Clusters
\nIt shares these architectural characteristics with NGINX and solves the C10K problem – supporting more than 10,000 concurrent connections.\nNode.js is not so great for serving static content – images and JavaScript files, for example – or load balancing across multiple servers.
\nNginx:
\n“If #nginx isn’t sitting in front of your node server, you’re probably doing it wrong.” Bryan Hughes on Twitter
\nThe non-blocking I/O engine of Node.js – libuv -
\nThe Observer Pattern(EventEmitter) maintains a list of dependents/observers and notifies them
\nvar events = require('events');\nvar eventEmitter = new events.EventEmitter();\n\nvar ringBell = function ringBell() {\n console.log('tring tring tring');\n}\neventEmitter.on('doorOpen', ringBell);\n\neventEmitter.emit('doorOpen');A stream is an abstract interface for working with streaming data in Node.js. The stream module provides a base API that makes it easy to build objects that implement the stream interface.
\nHanding POST request like upload file use request.on(‘data, chunk), request.on(‘end’, ()=>cb);
\nServer Side Rendering based on routes matched by React-router.
\napp.use((req, res) => {\n match({\n routes,\n location: req.url\n }, (err, redirectLocation, renderProps) => {\n if (err) {\n return res.status(500).end('Internal server error');\n }\n\n if (!renderProps) {\n return res.status(404).end('Not found!');\n }\n\n const initialState = {\n posts: [],\n post: {}\n };\n\n const store = configureStore(initialState);\n\n fetchComponentData(store.dispatch, renderProps.components, renderProps.params).then(() => {\n const initialView = renderToString(\n <Provider store = {store} >\n <RouterContext {...renderProps}/>\n </Provider>\n );\n\n const finalState = store.getState();\n\n res.status(200).end(renderFullPage(initialView, finalState));\n }).catch(() => {\n res.end(renderFullPage('Error', {}));\n });\n });\n});