In my Node.js Express application, I'm using middleware like multer for handling file uploads and cookieParser() for managing cookies. These middleware functions typically add properties to the request and response objects, such as req.file for multer or req.cookies for cookieParser.My question is, how long do these properties persist in the request and response objects? If I add a custom property to the request or response object in a middleware function, will that property be available in every subsequent request that comes to the server?
// Middleware function
app.use((req, res, next) => {
req.customProperty = 'some value';
next();
});
// Route handler
app.get('/example', (req, res) => {
console.log(req.customProperty); // Will this always be available?
res.send('Response');
});
i want to ensure that any custom properties I add to the request or response object are available throughout the entire request lifecycle and not just for a single request. Could someone clarify how this works and provide some insights into the lifecycle of these properties added by middleware functions? Thanks!