---
title: Supabase Postgres Best Practices
category: product
entity_type: skill
price: $15
canonical: https://forgehouse.ai/skills/supabase-postgres-best-practices/
lang: en
hreflang_alt: https://forgehouse.ai/tr/skiller/supabase-postgres-best-practices/
last_updated: 2026-06-20
---

# Supabase Postgres Best Practices

> Postgres performance optimization and best practices from Supabase.

Production-grade Postgres discipline for Supabase projects, organized into eight prioritized rule categories from query performance to advanced features. It turns 'measure don't guess' into a workflow: every query gets an EXPLAIN ANALYZE before deploy, every table gets RLS, every connection goes through the pooler. The result is a data layer that stays fast and secure as you scale instead of saturating at twenty users.

## Use cases
- Writing or reviewing SQL queries for performance before they ship
- Designing indexes: B-tree, partial, GIN: for the queries that actually run
- Writing RLS policies that survive a leaked JWT
- Configuring pgBouncer/Supavisor connection pooling for serverless and edge
- Eliminating N+1 queries with eager loading instead of per-row fetches
- Running zero-downtime migrations on large tables without lock storms

## Benefits
- Stop slow queries at the EXPLAIN ANALYZE step instead of in production
- Survive a leaked token without cross-tenant data exposure
- Serve 1000+ concurrent requests from a handful of pooled connections
- Ship column adds and type changes without locking a million-row table

## What’s included
- Eight prioritized rule categories with CRITICAL-to-LOW impact ratings
- Six defensive patterns with before/after code: RLS, N+1, pooling, EXPLAIN, indexing, migration safety
- Connection-string discipline (port 5432 vs 6543) that prevents 'too many clients' crashes
- Optimistic vs pessimistic locking guidance tied to Supabase realtime
- A Supabase-specific gotchas table plus an anti-pattern list
- A nine-point verification checklist covering RLS, pooler, indexes and statement timeout

## Who it’s for
Engineers writing or reviewing Supabase Postgres schemas and queries who want performance and security baked in from the first line.

## How it runs
The review sequence the skill applies to any Supabase query or schema before it ships, layered like the security stack it protects:
1. Security stack first: anon key stays client-side only, service_role never touches browser code, and every table ships RLS-enabled with auth.uid() policies, so even a leaked JWT cannot cross tenant boundaries.
2. Connection economics next: production traffic goes through the pooler on port 6543 (transaction mode, pgbouncer=true for ORMs), direct 5432 stays reserved for migrations. Free tier saturates at 60 raw connections; the pooler serves 1000+ serverless requests from a pool of 15.
3. EXPLAIN-driven gate: every new query runs EXPLAIN (ANALYZE, BUFFERS) before deploy. A Seq Scan, high cache-miss buffer reads, or a 10x gap between estimated and actual rows each trigger their own fix, from an index to a VACUUM ANALYZE.
4. N+1 sweep: any loop calling .select() per row is rewritten as one nested select (orders with items(*)), and pg_stat_statements is checked for the same query pattern repeating hundreds of times, which is the N+1 smell.
5. Index and schema pass: composite indexes ordered by selectivity, partial indexes for hot subsets, GIN for full-text and JSONB, and soft delete via deleted_at plus a partial index instead of destructive DELETE.
6. Migration safety last: additive changes ship as nullable-add, then batched backfill, then NOT NULL. Destructive DDL waits 7 days behind application-level deprecation, with a PITR snapshot taken before anything irreversible.

## FAQ
### We are a tiny project with maybe twenty users. Is this discipline overkill right now?
The opposite: saturating at twenty users is precisely the failure it prevents, and the rules are cheapest to adopt at the first line of schema. Running EXPLAIN ANALYZE before deploy, enabling RLS on every table, and routing connections through the pooler cost minutes now versus a painful retrofit later.

### Postgres tuning advice is everywhere, which of these rules only matter because I'm running on Supabase?
It is Supabase-specific where it matters: connection-string discipline between ports 5432 and 6543 that prevents 'too many clients' crashes on serverless, RLS policies designed to survive a leaked JWT, locking guidance tied to Supabase realtime, and a gotchas table for the platform's own sharp edges.

### Does it audit or inspect my live database for me?
No. It is a rulebook for writing and reviewing schemas and queries, eight prioritized categories with before/after code and a nine-point verification checklist. Running live diagnostics with raw SQL against your actual database is what the supabase-operations package does.

## Price
$15, one-time, no subscription. VAT included.

Related guide: [AI for data analytics](https://forgehouse.ai/guides/ai-data-analytics/)