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.
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Structured investigations for the failure modes engineers meet in real systems.
Supabase Auth Not Working: Session, Redirect, and JWT Debugging
A hands-on debugging guide for Supabase auth failures—session drops, redirect loops, and JWT validation errors in production.
Passport.js Strategy Not Authenticating: A Diagnostic Walkthrough
Step-by-step guide to debug a Passport.js strategy that silently fails to authenticate, covering serialization, middleware order, and callback pitfalls.
bcrypt.compare() Always Returns False: A Field Guide
Debug why bcrypt.compare() always returns false. Covers salt rounds, encoding mismatches, and truncated hashes with real commands.
Stripe Webhook Signature Verification Failed: A Debugging Guide
Diagnose and fix Stripe webhook signature verification failures. Covers common causes like clock drift, wrong signing secret, and raw body mismatches.
Firebase Security Rules Blocking Requests: Debugging Guide
A practical guide to debugging Firebase Security Rules that unexpectedly deny requests. Covers simulator pitfalls, missing auth tokens, and rule ordering issues.
Supabase RLS Blocking Query: How to Diagnose and Fix Row-Level Security Issues
A practical guide to debugging queries blocked by Supabase Row-Level Security, covering common pitfalls, diagnostics, and concrete fixes.
Long-form thinking on debugging habits, observability, and the systems around the bug.