postgres-best-practices

# Supabase Postgres Best Practices Comprehensive performance optimization guide for Postgres, maintained by Supabase. Contains rules across 8 categories, prioritized by impact to guide automated query optimization and schema design. ## When to Apply Reference these guidelines when: - Writing SQL queries or designing schemas - Implementing indexes or query optimization - Reviewing database performance issues - Configuring connection pooling or scaling - Optimizing for Postgres-specific features - Working with Row-Level Security (RLS) ## Rule Categories by Priority | Priority | Category | Impact | Prefix | |----------|----------|--------|--------| | 1 | Query Performance | CRITICAL | `query-` | | 2 | Connection Management | CRITICAL | `conn-` | | 3 | Security & RLS | CRITICAL | `security-` | | 4 | Schema Design | HIGH | `schema-` | | 5 | Concurrency & Locking | MEDIUM-HIGH | `lock-` | | 6 | Data Access Patterns | MEDIUM | `data-` | | 7 | Monitoring & Diagnostics | LOW-MEDIUM | `monitor-` | | 8 | Advanced Features | LOW | `advanced-` | ## How to Use Read individual rule files for detailed explanations and SQL examples: ``` references/query-missing-indexes.md references/query-partial-indexes.md references/_sections.md ``` Each rule file contains: - Brief explanation of why it matters - Incorrect SQL example with explanation - Correct SQL example with explanation - Optional EXPLAIN output or metrics - Additional context and references - Supabase-specific notes (when applicable) ## References - https://www.postgresql.org/docs/current/ - https://supabase.com/docs - https://wiki.postgresql.org/wiki/Performance_Optimization - https://supabase.com/docs/guides/database/overview - https://supabase.com/docs/guides/auth/row-level-security --- ## Credits & Attribution This skill is based on the excellent work by **[Supabase](https://github.com/supabase/agent-skills)**. Original repository: https://github.com/supabase/agent-skills Special thanks to [Supabase](https://github.com/supabase/agent-skills) for their generous open-source contributions, which helped shape this skill collection. Adapted by webconsulting.at for this skill collection