Memory leaks in JavaScript don't announce themselves with an error. They show up as a heap that grows by 20MB per minute — invisible in a five-minute Lighthouse run, fatal in a six-hour production session. Why React apps leak: A useEffect that opens a WebSocket and never closes it on unmount. A setInterval without clearInterval in the cleanup return. A global Map that grows without bound. In each
Confession: I’m not a walking dictionary. If you test me on textbook IT definitions, I might fail. After transitioning through Law and Banking into Tech, I’ve realized that terminology is often just a high-tech "smoke screen" for professional ego. But for many of us, the problem is deeper: it's about the language of logic itself. In my first year of Law school, I spent nights memorizing the "Theor
Random 30–50ms freezes with no obvious long tasks in the Performance panel often have one root cause: the garbage collector. V8 pauses JavaScript execution to reclaim memory, and if your allocation rate is high enough, those pauses happen frequently — creating jank that shows up as a sawtooth pattern in the memory timeline rather than a spike in the flame chart. What this covers: How V8's generati