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.
1 playbook in Languages & Runtime
Structured investigations for the failure modes engineers meet in real systems.
Pydantic V2 Migration Breaking Changes Debugging Guide
A practical debug guide for breaking changes when migrating from Pydantic V1 to V2, covering common errors and fixes.
Diagnosing and Fixing Goroutine Leaks in Go
A practical guide to detecting goroutine leaks in Go: tools, patterns, and real-world fixes.
Debugging Go Channel Deadlock: All Goroutines Are Asleep
How to diagnose and fix the 'fatal error: all goroutines are asleep - deadlock!' panic in Go programs, covering sync.WaitGroup misuse, unbuffered channel patterns, and circular channel dependencies.
Golang Interface Nil vs Pointer Nil: Why They're Not Equal and How to Debug
Understand why a Go interface holding a nil pointer is not equal to nil, with real debugging steps and a production incident.
Debugging Go JSON Unmarshal Unexpected Type Errors
A focused guide on diagnosing and fixing unexpected type errors during JSON unmarshaling in Go, with real-world examples and concrete debugging steps.
Debugging Go Context Cancellation That Doesn't Propagate
A practical guide to diagnosing why a canceled parent context in Go doesn't cancel its children, covering common pitfalls like forgotten WithCancel, goroutine leaks, and blocking operations.
Long-form thinking on debugging habits, observability, and the systems around the bug.