Supabase Debugging & Troubleshooting Hub
Every post here starts with a specific error message or broken behavior and ends with a working fix. No abstract theory — just the root cause and the change that resolves it.
RLS & security
6 itemsSupabase RLS Policy Design Patterns Beyond the Basics
Master advanced Supabase RLS policy patterns for multi-role access, team permissions, and hierarchical authorization. Includes copy-paste SQL and performance tips.
Next.js + Supabase Security: RLS, Secrets, and the Mistakes That Leak Data
A production security checklist for Next.js + Supabase: RLS policies that actually deny, where to store keys, hardening auth flows, rate limits, and the mistakes that have caused real data leaks.
Supabase vs Firebase RLS Model: Production Comparison Guide
Honest comparison of Supabase RLS and Firebase security models for multi-tenant production systems. — practical, code-backed walkthrough.
Debugging Supabase RLS Issues: A Step-by-Step Guide
Master RLS debugging techniques. Learn how to identify, diagnose, and fix Row Level Security policy issues that block data access in production.
Why Your Supabase RLS Policies Are Silently Failing (And How to Debug Them)
Supabase RLS failures return empty data, not errors. Learn the exact debugging workflow to find silent RLS policy bugs before they hit production.
Fix Supabase RLS Infinite Recursion Error (Postgres Policy Loop Explained — Production Fix 2026)
"Infinite recursion detected in policy for relation" — your Supabase RLS policy is querying its own table. Production fix with wrong-vs-correct policy examples, SECURITY DEFINER pattern, and a debug checklist.
Auth & sessions
10 itemsSupabase Authentication & Authorization Patterns
Master Supabase authentication and authorization. Learn email/password auth, social logins, magic links, 2FA, row-level security policies, and role-based...
Next.js App Router + Supabase SSR Session Management Deep Dive
Deep dive into Supabase SSR session management in Next.js App Router. Learn how cookies, middleware, and Server Components interact to keep users authenticated.
Next.js 15 Middleware: Complete Guide to Auth, Rate Limiting, A/B Testing, and Edge Logic
The definitive Next.js 15 middleware guide. Auth, rate limiting, A/B testing, geolocation, bot protection, security headers, and request logging — with complete code for the Vercel Edge runtime.
Supabase Auth Redirect Not Working in Next.js App Router: Exact Fix
Fix Supabase auth redirects failing in Next.js App Router, OAuth, and magic links. Learn the callback route, cookie, and redirectTo fixes that work in production.
Supabase Email Confirmation Not Sending Troubleshooting
Fix Supabase email confirmation not sending issues in Next.js. Complete troubleshooting guide with SMTP configuration, template fixes, and production solutions.
Fix Supabase Auth Session Not Persisting After Refresh
Fix Supabase auth sessions disappearing after page refresh in Next.js 14. Learn why this happens and get a tested solution in 5 minutes with working code...
Handle Supabase Auth Errors in Next.js Middleware
Learn how to properly handle Supabase authentication errors in Next.js middleware. Get tested solutions for common auth errors with working code examples.
Supabase Auth Error Codes Explained: same_password, weak_password, invalid_credentials (Fix Guide + TypeScript Cheat Sheet 2026)
Full error → cause → fix table for every Supabase Auth code: invalid_credentials, weak_password, same_password, email_not_confirmed, over_email_send_rate_limit. Copy-paste TypeScript handler that doubles signup completion.
Supabase vs Firebase Authentication: Which is Better for Your App in 2026?
Supabase vs Firebase Authentication: Which is Better for Your App in 2026?. Practical, code-backed walkthrough — what to do, what to avoid, and how to verify.
Supabase vs Firebase in 2026: The Honest Comparison No One Is Telling You
Supabase vs Firebase in 2026 — the definitive comparison. We break down pricing, database, auth, real-time, storage, and DX so you can pick the right backend for your next project.
Queries & performance
5 itemsSupabase Connection Pooling with PgBouncer on Vercel Serverless
Configure Supabase PgBouncer connection pooling for Vercel serverless deployments. Avoid connection exhaustion, choose pool modes, and tune for production scale.
Supabase Postgres Functions and Triggers: Complete Developer Guide
Complete guide to Postgres functions and triggers in Supabase. Learn PL/pgSQL, automated workflows, business logic, and database-level validation patterns.
Why Your Supabase Queries Are Slow (And Exactly How to Fix Them)
Supabase queries taking 2–10 seconds? This guide covers the real causes — missing indexes, N+1 patterns, unoptimized RLS policies, and connection pooling — with copy-paste fixes for each.
Supabase Realtime Gotchas: 7 Issues and How to Fix Them
Avoid common Supabase Realtime pitfalls that cause memory leaks, missed updates, and performance issues. Learn real-world solutions from production applications.
Supabase Free Tier Limits in 2026: What You Actually Get (And When You Will Hit Them)
A honest breakdown of every Supabase free tier limit — database size, bandwidth, auth users, storage, Edge Functions — with real numbers on when you will hit each one and whether upgrading is worth it.
DB ops
6 itemsZero-Downtime Postgres Migrations on Supabase
Ship Supabase Postgres schema changes without downtime using the expand/contract pattern, batch backfills, lock timeouts, RLS-safe rollouts, and GitHub Actions CI.
Database Migration Strategies for Next.js and Supabase Production Apps
Complete guide to database migrations in Supabase. Learn zero-downtime deployments, schema versioning, rollback strategies, and production patterns.
Next.js & Supabase Masterclass: Robust CI/CD Pipelines with GitHub Actions
Learn to build a robust CI/CD pipeline for Next.js and Supabase. Automate testing, branch previews, database migrations, and Vercel deployments.
Supabase Connection Pooling with PgBouncer on Vercel Serverless
Configure Supabase PgBouncer connection pooling for Vercel serverless deployments. Avoid connection exhaustion, choose pool modes, and tune for production scale.
Testing Next.js + Supabase: Unit, Integration, RLS, and E2E (Real Setup)
A pragmatic testing setup for Next.js + Supabase: Jest for units, a real Postgres branch for integration tests, pgTAP for RLS policies, and Playwright for E2E. With CI config and the mocks-vs-real-DB tradeoffs.
Postgres Zero-Downtime Flow Diagram: One-Page Guide
A 30-second migration flow reference for zero-downtime PostgreSQL releases. — practical, code-backed walkthrough.
Other hubs
Next.js + Supabase: The Complete Resource Hub
Everything you need to build production-ready full-stack apps with Next.js 15 and Supabase — authentication, RLS, deployments, performance, and architecture decisions.
n8n Automation: Real Workflows from Real Projects
Practical n8n automation guides built from actual client work — CRM lead capture, client reporting, Zapier migration, silent failure debugging, and self-hosted AI with Ollama.