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
5 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 + Auth Hardening
Next.js + Supabase in production: enable RLS on every table, never expose service_role to the browser, validate JWTs server-side, rate-limit public endpoints — 5 mistakes behind real data leaks.
Supabase RLS Not Working: Debug & Fix Policies (2026)
RLS blocking your queries? Test with auth.uid() in psql, check anon vs authenticated role, verify enable_rls — 5 policy mistakes with exact fixes.
Supabase RLS Policies Silently Failing: 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 (Production 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: Auth, Rate Limiting & Edge Guide
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 Callback Redirect Not Working? Next.js Fix
Fix Supabase auth redirect not working in Next.js: callback route, allowlisted URLs, router.refresh(). Copy-paste code for OAuth, magic links, passwords.
Supabase Email Confirmation Not Sending: 5 Fixes (2026)
Email not sending from Supabase? Check SMTP config, blocked sender domain, template redirect URL, and rate limits — 5 root causes with exact fixes for each.
Supabase Auth Session Missing? Fix for Next.js (2026)
Supabase auth session disappearing after refresh in Next.js 15 App Router? Fix it with createServerClient, cookie storage, and middleware session checks — tested in 2026.
Supabase Auth Errors in Middleware: 5 Fixes That Work
Auth redirects looping? AuthSessionMissingError in Next.js middleware? The 5 Supabase auth errors that break middleware — and the exact fix for each.
Supabase Auth Error Codes: Fixes + TS 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
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
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: 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 & Triggers: 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 How to Fix)
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
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.
Next.js + Supabase Database Migration Strategies
Complete guide to database migrations in Supabase. Learn zero-downtime deployments, schema versioning, rollback strategies, and production patterns.
Next.js + Supabase 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: 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, E2E
Don't mock Supabase — test against a real Postgres branch. Jest for units, pgTAP for RLS policies, Playwright for E2E, with CI config and 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.