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.
Documenting Bugs: A Postmortem-Driven Approach That Cut Recurrence by 60%
Most bug write-ups are useless. Here's a structured, postmortem-driven approach that reduced bug recurrence by 60% in our team — with templates and a real incident walkthrough.
Debugging Inside Docker Containers: Tools, Techniques, and a War Story
Practical techniques for debugging inside Docker containers: exec, nsenter, strace, and a real incident that made me rethink debug images.
kubectl logs: Debugging Pods with Logs, Timestamps, and Previous Instances
Beyond `kubectl logs pod-name` — using timestamps, previous instances, and multi-container patterns to diagnose real failures.
Debugging Serverless Functions Locally: A Practical Approach
Local debugging of serverless functions requires different tools and mindset than traditional apps. Here's how I approach it with real examples.
Debugging Terraform and CloudFormation Errors: A Field Guide to the 3 AM Page
Infrastructure-as-code errors are inevitable. Here's how to systematically debug Terraform and CloudFormation failures without losing your mind.
Debugging as Hypothesis Testing: A Mental Model for Systematic Root Cause Analysis
Most debugging is frantic guessing dressed up as experience. Here's a mental model that treats debugging as a scientific process — form hypotheses, design experiments, and isolate root causes systematically.