Buglyst Blog
Learn to debug under pressure.
Playbooks for fast pattern recognition, guides for the full investigation, and articles for the engineering judgment around the edges.
17 playbooks · 509 guides · 95 articles · 12 linked practice labs ·skip to practice
Fast pattern recognition for the production failures engineers see most often.
1 playbook in Frontend & Web
Structured investigations for the failure modes engineers meet in real systems.
SwiftUI View Not Updating When State Changes: A Field Guide
Your SwiftUI view stays stuck even though @State or @Published values change. This guide covers the real reasons—wrong view identity, unnecessary equatable conformance, and publishers on background queues—and how to fix them.
React Native FlatList Performance: Why Your List Jitters at 200+ Items
A hands-on guide to diagnosing and fixing FlatList jank, dropped frames, and blank cells in React Native apps, with real profiling commands.
Detached DOM Tree Memory Leak: Hunting Ghost Nodes in the Browser
A production debugging guide for browser detached DOM node memory leaks: how to find them, fix them, and prevent them in React/Angular/Vanilla JS apps.
Intersection Observer Callback Not Firing: Debugging Silent Failures
A practical guide to diagnosing why your IntersectionObserver callback never fires — covering root causes from thresholds to root margins, with real debugging commands and war stories.
Service Worker Serving Stale Cache: Diagnose and Fix
A guide to debugging when a service worker returns stale cached responses instead of fresh data from the network.
Metro Bundler 'Unable to Resolve Module' — Real Debugging & Fix Strategy
A practical guide to debugging Metro Bundler's 'Unable to resolve module' errors in React Native projects, covering cache, aliases, symlinks, and native module misconfigurations.
Long-form thinking on debugging habits, observability, and the systems around the bug.
Why Your 60fps Animation Stutters: A Deep Dive Into the Browser Event Loop
The event loop isn't just about callbacks. It's about when and in what order the browser processes tasks, microtasks, and rendering. Here's what actually happens between frames.
Remote Debugging Mobile Devices at Scale: What Works and What Doesn't
Setting up remote debugging for iOS and Android devices involves more than just enabling Developer Mode. Here's what I've learned from debugging over 500 devices in production.