Backend & Databases
Wat is middleware in server context?
Middleware voert code uit tussen request en response.
Middleware uses
Logging requests Authentication Validation Error handling
Code Voorbeelden
JAVASCRIPTExpress middleware
app.use((req, res, next) => {
console.log(`${req.method} ${req.path}`);
next();
});
// Error handling middleware
app.use((err, req, res, next) => {
console.error(err);
res.status(500).json({ error: err.message });
});Relevante trefwoorden
middlewareloggingvalidation