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.
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Structured investigations for the failure modes engineers meet in real systems.
Angular Standalone Component Import Error: What Actually Works
A debugging guide for Angular standalone component import errors – the import-not-found and unexpected directive issues you hit in real projects.
Angular Signals Not Updating the Template: Debugging Guide
A practical guide to debugging Angular Signals that fail to trigger template updates. Covers change detection, signal creation, and common pitfalls.
Angular HTTP Interceptor Not Firing: Real Causes and Fixes
Is your Angular HTTP interceptor silently failing? This guide covers the non-obvious reasons—from provider scoping to AOT issues—with concrete commands to verify.
ASP.NET Core Captive Dependency Scope Error: Diagnosis and Fixes
A practical guide to diagnosing and fixing captive dependency scope errors in ASP.NET Core DI, with real-world commands and code patterns.
Android ANR (Application Not Responding) Debugging: From Input Dispatch to Watchdog Timeouts
A field guide for Android engineers on diagnosing and fixing Application Not Responding (ANR) errors, covering input dispatch, broadcast receivers, and service timeouts.
Flutter setState Not Rebuilding Widget – Debugging Stale UI
Diagnose why setState doesn't trigger a rebuild in Flutter: missing context, wrong state class, or identity issues. Includes concrete commands and fixes.
Long-form thinking on debugging habits, observability, and the systems around the bug.
Assert Statements: Where They Help and Where They Hurt
Assert statements are a double-edged sword. Used correctly, they catch bugs early and document invariants. Used carelessly, they can mask failures and create security holes. Here's how to wield them effectively.
Debuggers vs Console.log: Why I Stopped Using Print Statements for Debugging
Print statements are the duct tape of debugging. They work for trivial issues, but for race conditions, async flows, or deep call stacks, a debugger saves hours. Here's what I learned after years of using both.
Treating Bugs as Hypotheses: How the Scientific Method Fixes Debugging
Frustrated by flailing through logs? The scientific method turns debugging into a reproducible process. Here's how to formulate hypotheses, design experiments, and isolate root causes with confidence.
How to Debug a Regression: A Practical Walkthrough
A practical, step-by-step guide to finding and fixing regression bugs, with real-world examples and concrete commands you can run today.
The Cost of Not Reproducing Bugs: Why Local Debugging Saves Hours
Skipping local reproduction leads to wasted hours, broken deploys, and frustrated teams. Here's why it's non-negotiable and how to do it right.
Debugging an Unfamiliar Codebase: A Systematic Approach
A repeatable process for debugging code you didn't write — with specific techniques, tooling choices, and a war story from a production outage at 2 AM.