Function: determineMonitorStatus()

function determineMonitorStatus(httpStatus: number):
    | "degraded"
    | "down"
    | "up";

Defined in: shared/utils/httpStatusUtils.ts:66

Determines monitor status ("up", "degraded", or "down") from an HTTP status code.

Parameters

httpStatus

number

The HTTP status code to evaluate (integer).

Returns

"degraded" | "down" | "up"

Up if the site is responding normally, "degraded" if responding certain server issues, "down" if server error or invalid code.

Remarks

1xx–4xx: "up" (site is responding)

• 5xx degraded errors: "degraded" (server responding but with issues)

  • 501 Not Implemented
  • 505 HTTP Version Not Supported
  • 510 Not Extended

• 5xx server errors: "down" (server not functioning properly)

  • 500 Internal Server Error
  • 502 Bad Gateway
  • 503 Service Unavailable
  • 504 Gateway Timeout
  • Others

• <100 or >599: "down" (invalid code)

Used by monitoring services to classify site health with three-state model.

Example

determineMonitorStatus(200); // "up"
determineMonitorStatus(404); // "up"
determineMonitorStatus(501); // "degraded"
determineMonitorStatus(500); // "down"
determineMonitorStatus(999); // "down"

See

MDN: HTTP response status codes