Radiator Server Documentation — v10.34.0

Backend pool full

Backend pool full.

Emission

Log level: DEBUG

Per-request tracing: No

Promotion: WARN

Logged when every connection in a backend pool is busy. Load growth, slow queries, or an underprovisioned database can exhaust the pool.

Check backend latency and PoolExhausted counters first. Increase the backend connections setting only for legitimate load and when the database has capacity.