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.
Kubernetes ConfigMap Not Mounting as Volume – Debugging Guide
A practical guide to diagnose and fix ConfigMap volumes that fail to mount in Kubernetes pods, covering common misconfigurations and hidden gotchas.
Kubernetes PersistentVolumeClaim Stuck in Pending: Debugging Guide
A practical guide to debugging a PersistentVolumeClaim stuck in Pending state in Kubernetes, covering storage class misconfiguration, missing provisioner, and capacity issues.
Kubernetes RBAC 403 Forbidden: Debugging Authorization Denials
A practical guide to diagnosing and fixing Kubernetes RBAC 403 Forbidden errors, covering common causes, diagnosis steps, and fixes with real-world examples.
Kubernetes Ingress Not Routing Traffic: A Debugging Guide
A concrete debugging guide for when your Kubernetes Ingress controller stops routing traffic to services, covering diagnosis, common causes, and fixes.
Kubernetes HPA Not Scaling: Diagnosing and Fixing Stuck Autoscalers
A practical guide to debugging Horizontal Pod Autoscalers that refuse to scale, covering metrics pipeline issues, target utilization mismatch, and custom metrics pitfalls.
Kubernetes Node Not Ready: Beyond the Textbook
A practical guide to debugging Kubernetes nodes stuck in NotReady state, covering kubelet, CNI, disk pressure, and real-world edge cases.
Long-form thinking on debugging habits, observability, and the systems around the bug.
Debugging CSS Layout Issues: A Systematic Approach to Fixing Broken Layouts
A practical, step-by-step system for diagnosing and fixing CSS layout bugs — from overflow and collapsing margins to flexbox and grid misbehavior. Includes real DevTools workflows and a war story from production.
Debugging Accessibility Violations: A Systematic Approach from Audit to Fix
A practical guide to identifying, triaging, and fixing accessibility violations in web applications, covering automated tools, manual testing techniques, and common pitfalls.
Find the Real Cause of a Slow Page: A Profiling Protocol for Engineers
A practical protocol for profiling web page performance — not a list of metrics, but a repeatable process for finding what actually slows down your users.
Tracking Down Memory Leaks in Browser JavaScript: A Practical Field Guide
Memory leaks in the browser are subtle and hard to reproduce. This guide covers practical techniques to detect, isolate, and fix them using Chrome DevTools, heap snapshots, and allocation timelines.
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.