Deep Security Q&A

Supabase Row Level Security

Comprehensive questions and answers about implementing and securing Row Level Security in Supabase.

Security Overview

2
Urgent Topics
1
Warning Topics
3
Informational Topics

Questions & Answers

Best Practices

Policy Design

  • Enable RLS on all tables by default, disable only when absolutely necessary
  • Use explicit DENY policies rather than relying on implicit deny
  • Test policies thoroughly in a development environment first

Performance Considerations

  • Index columns used frequently in RLS policy conditions
  • Avoid complex subqueries and joins in policy definitions
  • Use security definer functions for complex policy logic