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.
17 playbooks
Debugging Env Var Issues
A concise checklist for incidents where local works but CI, staging, or production changes behavior.
Debugging Cache Stampedes
How to recognize and contain request spikes when cached data expires.
Debugging CORS Origin Bugs
A practical way to inspect origin parsing, credentials, and header behavior.
Debugging Retry Bugs
Retry issues often hide the first failure and create duplicate work.
Debugging Timezone Bugs
Time bugs usually live at day boundaries, DST changes, and unit conversions.
Debugging Pagination Bugs
Pagination bugs hide in boundary math, cursor reuse, and new records arriving between pages.
Structured investigations for the failure modes engineers meet in real systems.
ESLint Rule Conflict: How to Diagnose and Fix Competing Linter Directives
A complete guide to resolving ESLint rule conflicts where two or more rules produce contradictory outcomes, breaking your lint pipeline or CI.
Nx Affected Command Not Detecting Changes: Debugging Guide
When `nx affected` commands fail to see your changes, the cause is almost always a mismatch between the git base and the project graph. This guide shows you exactly how to diagnose and fix it.
ArgoCD Application Sync Failed: A Hands-On Debugging Guide
A practical guide to diagnosing and fixing ArgoCD application sync failures, covering common root causes like out-of-cluster state, resource conflicts, and network issues.
semantic-release Not Creating a Release: Debugging the Silent Fail
A practical guide to debugging why semantic-release runs without errors but produces no release. Covers token issues, commit message parsing, and GitHub branch protection.
Husky Git Hook Not Running: Why Your Pre-commit or Commit-msg Hook is Silently Skipped
Diagnose why Husky hooks are not executing despite being installed. Covers .git/hooks issues, path problems, and permission errors.
How to Debug SSL Certificate Errors: Self-Signed Certificates in HTTPS
A practical guide to debugging 'self-signed certificate' errors in HTTPS connections, covering diagnosis, root causes, and fixes for intermediate engineers.
Long-form thinking on debugging habits, observability, and the systems around the bug.
Logs, Traces, and the Lies They Tell: Debugging a Stuck Queue in Production
A single stuck queue brought down an entire checkout flow. Here's how we traced the failure across services, what the logs didn't say, and the tools that finally showed the truth.
Pair Debugging: How to Debug Together Without Killing Each Other
Pair debugging sounds great on paper. In practice, it's easy to step on each other's toes, go silent, or fight over the keyboard. Here's how to make it work.
Debugging with AI Tools: What Worked and What Didn't in Production
After a year of using GPT-4, Copilot, and Claude to hunt production bugs, here's what actually helped — and what sent me down dead ends.
How to Debug Legacy Code Without Losing Your Mind
A pragmatic approach to debugging code you didn't write, with techniques for tracing execution, isolating side effects, and making safe edits.
Debugging Feature Flag Rollouts: Tracing the Live-at-5 Incident
A misconfigured feature flag triggered a cascading failure in production. Here's how we traced the root cause and built a better debugging toolkit.
How to Ask for Debugging Help Without Wasting Everyone's Time
Asking for debugging help is a skill. Here's how to provide enough context, show your work, and frame the problem so others can actually help you.