Aryan

Many Node.js devs overlook `setImmediate()`. Big mistake. While everyone uses `setTimeout()` and `setInterval()`, this function is a hidden game-changer. It solves a critical problem for recursive operations. ❌ This will crash your application with a stack overflow: function fetchData() { if (moreData) fetchData(); } ✅ This is the correct, stable approach using `setImmediate()`: function fetchData() { if (moreData) setImmediate(fetchData); } Why? It instructs Node.js to execute the function on the *next* event loop iteration. This crucial pause prevents the call stack from building up endlessly. Essential for reliable retry mechanisms, continuous polling, and managing heavy synchronous loops without crashing. Understand this, and your Node.js apps will be far more robust.