Jul 29, 2026
Notes on a Three-Day Memory Leak
A slow leak in a Node worker, the wrong assumptions that hid it, and what finally found it.
A slow leak in a Node worker, the wrong assumptions that hid it, and what finally found it.
A CLS regression that never appeared on desktop, traced back to a font fallback with different metrics.
A build script got 40% slower after I 'optimized' it with worker threads, and what that taught me about profiling first.
A regression I'd been guessing at for a week, solved by finally trusting the tool built for exactly this.