Edge Functions: Several users reported 503 errors with SUPABASE_EDGE_RUNTIME_ERROR error code

Summary

Edge Functions: Several users reported 503 errors with SUPABASE_EDGE_RUNTIME_ERROR error code

Incident Summary A health check designed to prevent Out-of-Memory (OOM) conditions began closing some incoming connections, which led to 503 errors for a subset of users. These errors were initially surfaced under a generic SUPABASE_EDGE_RUNTIME_ERROR code. Timeline & Actions Sunday, 26: Issue detected as user reports of 503 errors increased. Investigation into root cause began. Monday, 27: Introduced a more accurate error code (SUPABASE_EDGE_RUNTIME_SERVICE_DEGRADED) and implemented infrastructure changes to mitigate impact. Tuesday, 28: Adjusted conditions for returning 503 responses to be less aggressive. Prepared a “retry-on-degraded” mechanism (not yet deployed). Current Status Mitigations are in place and improvements to error handling are ongoing. Further resilience enhancements will be deployed shortly.

• Started

  Apr 24, 2026 · 10:00 AM

• Resolved

  Apr 24, 2026 · 10:00 AM

• Duration

  < 1m

• Severity

  None

• ✓

  Resolved

  Apr 28 · 8:34 PM Supabase

  Incident Summary A health check designed to prevent Out-of-Memory (OOM) conditions began closing some incoming connections, which led to 503 errors for a subset of users. These errors were initially surfaced under a generic SUPABASE_EDGE_RUNTIME_ERROR code. Timeline & Actions Sunday, 26: Issue detected as user reports of 503 errors increased. Investigation into root cause began. Monday, 27: Introduced a more accurate error code (SUPABASE_EDGE_RUNTIME_SERVICE_DEGRADED) and implemented infrastructure changes to mitigate impact. Tuesday, 28: Adjusted conditions for returning 503 responses to be less aggressive. Prepared a “retry-on-degraded” mechanism (not yet deployed). Current Status Mitigations are in place and improvements to error handling are ongoing. Further resilience enhancements will be deployed shortly.