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.
Nuxt Build Fails: Module Not Found
Nuxt's build process can suddenly fail with 'module not found' errors even on identical code. This guide unpacks root causes beyond obvious missing packages.
Tracking Down Vue Prop Type Validation Warnings
How to identify, diagnose, and resolve Vue component prop type validation warnings—including why they happen, and what breaks if you ignore them.
Debugging Vue v-for 'Missing Key' Warnings in Templates
Learn how to resolve and prevent Vue's v-for 'missing key' warnings, why they matter, and how they affect rendering stability in real-world apps.
Debugging 500 Errors on Nuxt Server API Routes
Nuxt server API routes returning HTTP 500 errors are common but often tricky. This guide gives you concrete steps and real fixes for Vue/Nuxt stacks.
Vue Provide/Inject: Child Component Not Receiving Provided Value
Child components sometimes fail to receive values via Vue's provide/inject. This guide digs into real-world causes, diagnostics, and hard-won fixes.
Diagnosing Vue Async Component Loading Failures in Production
How to quickly debug and resolve Vue async component loading errors, from network failures to misconfigurations. Actionable steps for real-world codebases.
Long-form thinking on debugging habits, observability, and the systems around the bug.
The Art of the Minimal Reproducible Example: A Debugging Superpower
A minimal reproducible example (MRE) is more than just a snippet — it's a tool that isolates the bug, saves time, and gets you faster answers. Here's how to build one that works, with a real-world war story.
Retry Storms: When Retries Make a Cascading Failure Worse
Retries seem like a safety net, but in a distributed system under load they can turn a small hiccup into a full outage. Here's how retry storms form and what to do about them.
Caching Bugs Are the Worst: A Postmortem on Stale Data Disasters
A deep dive into the most insidious caching bugs, with real postmortems and practical patterns to avoid stale-data disasters.
Observability vs. Monitoring: Why Your On-Call Rotation Still Wakes You Up at 3 AM
Monitoring tells you something is broken. Observability lets you figure out why—without guessing, without SSH, without restarting the pod.
Debugging Flaky Tests for Good: A Systematic Approach to Root Cause Analysis
Flaky tests waste time and erode trust. Here's how to find and fix the actual root cause instead of just rerunning.
Idempotency Keys: The Safety Net Your Payment API Needs
How idempotency keys prevent double charges, lost refunds, and data corruption in payment APIs. With real-world examples and edge cases you haven't considered.