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.
Debugging Go HTTP Client Timeout Errors: Beyond the Obvious
A practical guide to identifying and fixing Go HTTP client timeout errors, covering net/http defaults, context deadlines, DNS issues, and connection pooling gotchas.
Debugging Go Test Race Conditions with t.Parallel()
A practical guide to diagnosing and fixing race conditions that appear when running Go tests with t.Parallel(), covering false sharing, shared state, and flaky CI failures.
gRPC Interceptor Not Executing in Go: Why Your Middleware Is Being Skipped
A debugging guide for when your gRPC interceptor in Go silently fails to execute, covering registration order, interceptor chaining, and server lifecycle quirks.
Debugging go.mod replace Directive Errors
A practical guide to diagnosing and fixing invalid, misconfigured, or conflicting replace directives in Go modules.
Golang sync.Mutex Deadlock: Detection and Resolution
A guide to identifying and fixing deadlocks caused by sync.Mutex in Go, covering detection, common causes, and practical fixes.
Fixing 'Type Does Not Satisfy Constraint' in Go Generics
A practical guide to diagnosing and resolving 'X does not satisfy constraint' errors when using Go generics with custom constraints.
Long-form thinking on debugging habits, observability, and the systems around the bug.
Sentry Error Monitoring: A Practical Setup Guide from a Production Outage
A step-by-step setup guide for Sentry error monitoring, covering source maps, release tracking, grouping rules, and alerting — with a real story of a production outage that taught us the hard way.
Reading Prometheus Alert Rules: A Practical Reference for Debugging Firing Alerts
Alert rules look straightforward until you're staring at a firing alert at 3 AM. This post covers the structure, common traps, and how to extract actionable intent from any rule.
Debugging Network Issues with Chrome DevTools: Timing, Waterfalls, and Hidden Columns
A practical guide to diagnosing slow requests, stalled connections, and caching bugs using the Network tab's non-obvious features.
Finding Jank in React Apps with Chrome DevTools Performance Tab
A practical walkthrough of the Performance tab for diagnosing frame drops and long tasks in React apps, with a real debugging story.
Using Breakpoints Effectively: Beyond Step and Continue
Most engineers know F9 to set a breakpoint and F5 to run. But breakpoints have hidden superpowers — conditional, logpoint, hit-count, and data breakpoints — that can cut debugging time in half. Here's how to use them with real examples.
Conditional Breakpoints: When and How to Use Them Beyond the Basics
Conditional breakpoints stop only when a specific condition is true, reducing noise in loops and high-frequency code. Here's how to wield them in Chrome DevTools, VS Code, and IntelliJ, plus a war story about a subtle race condition.