Day 15: Asynchronous Iterators & Generators in Node.js 🚀When working with streams of data, APIs, or long-running I/O tasks, we often need a way to process items one by one without blocking the event loop. That’s where asynchronous iterators and generators in Node.js shine. They give us a clean, “for-await...Sep 15, 2025·3 min read
Day 10: CAP Theorem in Real Systems (CP vs AP choices)Hello guys, when designing distributed systems, we quickly face trade-offs. The CAP Theorem, introduced by Eric Brewer, formalizes this: In any distributed data system, you can only guarantee two out of three:Consistency, Availability, Partition Tole...Sep 9, 2025·2 min read
Day 8: Load Balancing Strategies (Round Robin, Least Connections, Hashing)Hello guys, scaling backend systems is not just about adding more server. It’s about distributing traffic smartly. This is where load balancing comes in. A load balancer sits between clients and servers, acting as a smart “traffic cop,” ensuring no s...Sep 8, 2025·3 min read
Day 7: Observability in Node Apps (Logs, Metrics, Traces with OpenTelemetry)When building production-ready Node.js applications, understanding what's happening under the hood is critical. Observability is the key to unlocking this understanding. It helps us monitor, debug, and optimize our apps in real time. Today, we’ll dee...Sep 7, 2025·3 min read
Day 6: Error Handling in Production Node Apps (sync, async, retries)If you’ve ever deployed a Node.js app to production, you already know: errors will happen. Not “if,” but “when.” A single unhandled exception can bring your server down, frustrate users, and wake you up at 2 AM. That’s why mastering error handling — ...Sep 6, 2025·3 min read
Day 5: Memory Management in Node.js (Heap, GC, Leaks)Hello guys, We have already explored Cluster & Worker Threads yesterday but still how Node.js overcomes its single-threaded limitation by scaling across CPU cores and parallelizing heavy tasks. But scaling isn’t just about CPU cycles. Memory manageme...Sep 5, 2025·3 min read
Day 4: Cluster vs Worker Threads in Node.js - How to Scale & Parallelize Your AppsHello Folks! 👋 Ever wondered how Node.js, being single-threaded, manages to handle thousands of concurrent requests without breaking a sweat? The secret lies in its event-driven, non-blocking I/O model. But what happens when your application needs t...Sep 4, 2025·4 min read