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.
18 playbooks · 509 guides · 96 articles · 13 linked practice labs ·skip to practice
Fast pattern recognition for the production failures engineers see most often.
18 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.
Astro Content Collection Not Found: A Debug Walkthrough
A hands-on guide to diagnosing and fixing 'Content collection not found' in Astro projects, covering config mismatches, missing entries, and schema issues.
Debugging pnpm Peer Dependency Conflicts
A practical guide to identifying and fixing peer dependency conflicts in pnpm projects, with real commands and specific error patterns.
Debugging Monorepo Package Import Resolution Failures
A hands-on guide to diagnosing why a monorepo package import fails to resolve, covering symlink issues, build tool config, and module resolution order.
npm ci Slowing Down Your CI Pipeline? Here's What to Check
Debug why npm ci is taking forever in your CI pipeline. From cache misses to lockfile drift, here are the concrete fixes.
Debugging Yarn PnP 'Module Not Found' Errors
A practical guide to diagnosing and fixing 'module not found' errors in Yarn Plug'n'Play (PnP) environments, covering common causes like misconfigured dependencies, missing packages, and cache corruption.
Bun Runtime Compatibility Error: A Debugging Guide
Diagnose and fix Bun runtime compatibility errors when your code works in Node.js but fails in Bun.
Long-form thinking on debugging habits, observability, and the systems around the bug.
The Debugging Mindset: A Systematic Method for Finding Root Causes
A repeatable, hypothesis-driven approach to debugging that works for intermittent failures, performance regressions, and production incidents.
Analyzing a Core Dump: What to Do When Your Process Goes Silent
A core dump is your process's last scream. Here's how to make it talk.
Timeouts Every Engineer Gets Wrong (and How to Fix Them)
Most timeout bugs aren't logic errors — they're configuration failures. Here's how to stop treating timeouts as magic numbers and start engineering them deliberately.
Backpressure in Streaming Systems: When Your Pipeline Fights Back
Backpressure is the system's way of saying 'slow down.' Ignore it and you get OOM crashes, silent data loss, or cascading failures. Here's how to design for it.
Finding Memory Leaks Step by Step: A Systematic Approach
Memory leaks are the silent killers of long-running services. Here's a repeatable process to hunt them down, from heap dumps to production monitoring.
Spacemail Is Down: What the August 2026 Outage Teaches About Provider Failures
A concise status snapshot of the current Spacemail incident, followed by a practical engineering guide to provider-wide outages, regional failover, degraded modes, and safe recovery.