http

The HTTP backend enables Radiator to make HTTP requests to external web services for authentication and authorization purposes.

Health Monitoring

HTTP backends have no SLO by default. Add a service-level-objective block to enable automatic circuit breaking and exponential backoff.

When an explicit service-level-objective block is present, omitted fields use the standard defaults (failure-rate 3/5, initial-backoff-period 3s, max-backoff-period 30s, recovery-probe-count 2). See Service Level Objective for details.

Only infrastructure-level HTTP responses count as failures toward the SLO:

• 5xx — server-side errors (the backend is crashing or misconfigured)
• 429 Too Many Requests — the backend is overloaded or rate-limiting

Application-level responses such as 401 Unauthorized, 403 Forbidden, and 404 Not Found are valid AAA outcomes and do not affect the failure rate.