setTimeout(0) vs setImmediate(): The Event Loop Trap That Exposes Senior Engineers
Why setTimeout(0) and setImmediate() behave differently — and how understanding event loop phases separates senior engineers from the rest.
Blog
Backend engineering articles on distributed systems, databases, caching, and system design.
-
-
The 6 Phases of the Event Loop — Why Your Mental Model of Node.js Is Probably Wrong
A deep dive into Node.js event loop phases, why timers are not precise, and how poll phase behavior shapes real-world performance.
-
Inside libuv: The Hidden Engine Behind Node.js Scalability
A deep dive into libuv, the system-level engine that powers Node.js concurrency, from epoll to threadpools.
-
The Event Loop Is Just a Scheduler — What Node.js Actually Executes (and What It Doesn’t)
Most engineers misunderstand the Node.js event loop. It doesn’t run async work—it schedules callbacks. This deep dive explains what really happens under the hood.
-
Node.js Is Not Single-Threaded — And That Misconception Is Killing Your Scale
Most engineers think Node.js is single-threaded. It isn’t. This misunderstanding leads to poor system design, hidden bottlenecks, and scalability failures.