Why Supabase Apps Need External Monitoring
Supabase provides excellent infrastructure, but relying solely on their status page means you'll learn about issues after your users do. External monitoring from FourSight gives you independent verification that your Supabase-backed services are healthy.
Monitoring Supabase Endpoints
A typical Supabase application has four critical surfaces to monitor.
REST API (PostgREST)
Monitor your most-queried tables via the REST API. A simple GET request to your primary data endpoint verifies both PostgREST and Postgres health simultaneously.
Auth Endpoints
Your signup and login flows depend on Supabase Auth. Monitor the /auth/v1/health endpoint and test critical auth flows with keyword checks.
Edge Functions
Supabase Edge Functions can fail independently of the rest of the platform. Monitor each production function's health endpoint.
Realtime Channels
If your app uses Supabase Realtime for live updates, monitor the WebSocket endpoint to catch connection issues early.
Monitoring a Commercial SaaS?
FourSight includes 25 commercial-safe monitors with multi-region validation.
Start Monitoring FreeDatabase Performance Monitoring
Postgres query performance degrades gradually, then suddenly. Monitor API endpoints that run your heaviest queries and set response-time thresholds that alert you when queries slow beyond acceptable limits.
Recommended response time thresholds:
Simple read queries: < 200ms (alert at 500ms)
Complex joins: < 500ms (alert at 1500ms)
Full-text search: < 300ms (alert at 1000ms)
Write operations: < 100ms (alert at 500ms)Connection Pool Exhaustion
Supabase uses connection pooling via PgBouncer. When your pool is exhausted, new connections fail. Monitor your app's health endpoint that performs a simple database query—when it starts timing out, you've likely hit pool limits.
Multi-Region Verification
Supabase projects are hosted in a single region. Use FourSight's multi-region monitoring to verify that users worldwide can reach your Supabase endpoints with acceptable latency. High latency from certain regions may indicate you need a CDN or edge caching strategy.