I Just Built a Production-Ready Authentication System with Supabase

I Just Built a Production-Ready Authentication System with Supabase – Full Guide (Next.js App Router) Hey Dev Community! 👋 If you've ever struggled with real-world authentication in a Next.js project — dealing with session expiry, middleware headaches, email verification, protected routes, or proper Row Level Security (RLS) — this one's for you. I just published a complete, battle-tested guide on my blog that walks you through building a full authentication system using Supabase and Next.js App Router . No half-baked examples. No missing pieces. Everything you need to ship a secure, production-grade auth flow today. Why This Guide is Different Most Supabase tutorials stop at signInWithPassword and call it a day. This one goes all the way: ✅ Middleware + HTTP-only cookies with @supabase/ssr ✅ Email verification + password reset flows ✅ Protected routes using getUser() on the server ✅ Role-Based Access Control (RBAC) with Postgres RLS + profiles table ✅ Proper client vs server Supabase c