← All HTTP status codes
101
Switching Protocols
The server agrees to switch protocols as requested via the Upgrade header (e.g. to WebSocket).
The 1xx class
1xx — Informational. Interim responses while the server continues processing: protocol switches, early hints. Rarely seen by end users.
Monitoring for this code
Informational responses are transient and rarely worth alerting on. If your monitoring captures one as a final response, check that your client follows the protocol upgrade or waits for the final status.
Get alerted the moment your API returns a 5xx
ContinuumNexus checks your endpoints from multiple regions and emails you as soon as a status code goes wrong.