What it is
The logs show SQLSTATE 53300 — too many connections — over the last 24 hours.
Why it matters
The database is refusing new connections, so requests fail regardless of how healthy the application is. In serverless deployments this is usually per-invocation connections rather than genuine traffic growth.
How to fix it
Route serverless and edge clients through the connection pooler, reuse clients at module scope rather than per request, and cap pool sizes. Raising the connection limit treats the symptom.
Run them all on your app
Connect your repo and your live services with read-only scopes. The first scan is free, and nothing changes without your approval.