What errors can the API return?
Branch on the HTTP status before parsing a success payload.
| Status | Meaning | Action |
|---|---|---|
| 401 | Invalid authentication | Check or rotate the key |
| 422 | Invalid IP input | Correct the request |
| 429 | Limit reached | Check usage; wait or upgrade |
| 500 | Server error | Retry with backoff |
Which failures should be retried?
Retry network timeouts and 500 responses with bounded exponential backoff. Do not automatically retry 401 or 422 responses.
What should be logged?
Log status, route, timing, and a request correlation value when available. Redact Authorization and X-API-Key headers.
How should HTTP status handling be implemented?
Branch on the HTTP status before decoding a success model. Convert 401, 422, 429, transport failure, and 500 into stable application error categories with different retry and user-message behavior. Keep this responsibility close to the IPRout client so the behavior documented in HTTP Status Code Reference remains consistent across web requests, workers, and scheduled jobs.
How should HTTP status handling be verified?
Mock every documented status plus a timeout and a non-JSON intermediary page. Tests should prove that permanent request failures stop immediately and that transient retries remain bounded. Automate the stable cases and reserve live checks for controlled environments so verification is repeatable without consuming unnecessary production allowance.
How should HTTP status handling be operated?
Log route, status category, elapsed time, and a safe correlation value. Redact both authentication headers and avoid placing complete IP intelligence bodies into general-purpose error telemetry. Write down the owner and expected behavior so an alert or product change can be handled without reconstructing the original integration decisions.
Where does HTTP status handling stop?
A status code identifies the failing boundary, not the final remediation by itself. For 429, inspect account and key capacity; for 401, confirm deployed secret configuration before rotating credentials. Treat that limit as part of the feature contract and direct callers to the related guide when they need a different guarantee or control.
What belongs in the release review for HTTP status handling?
Review the deployed implementation of HTTP Status Code Reference, not only a local sample. Confirm the intended endpoint, credential source, timeout, response model, and fallback from the environment that will carry real traffic. Use the verification cases above as release evidence, inspect generated browser assets and logs for secret exposure, and make sure dashboards identify the workload without storing raw credentials or unnecessary IP data. Record the configuration owner and rollback action before enabling the feature broadly.
When should HTTP status handling be revisited?
Revisit HTTP status handling when traffic volume, plan capacity, application ownership, deployment regions, browser origins, data retention, or the product consequence of a lookup changes. Compare the current implementation with the documented operating boundary rather than assuming the original decision still fits. Update tests and internal runbooks together, then verify the public API contract and related IPRout guides before rolling the change across every service that shares the client or account.
External references
Continue with the standards and official documentation most relevant to this guide.