Implementing Row Level Security in Supabase: decision guide and validation
Choose database‑enforced RLS over Edge Function gating for tenant isolation in Supabase, with policy SQL, trade‑offs and validation steps.
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supabaseSupabase Row Level Security: Scoping Data to Authenticated Users with auth.uid()
Supabase Row Level Security uses Postgres native RLS with auth.uid() to scope rows to authenticated users. Enable RLS, write policies matching user_id = auth.uid(), and verify with real JWTs — but watch for default-deny lockout, service_role bypass, and table owner exceptions.