110 Response is Stale

The HTTP 110 Response is Stale warning code signals that a cached response has passed its freshness lifetime. The cache generates this code and attaches it to the Warning header in the HTTP response.

Example

Warning: 110 www.example.re "Response is Stale"

See also

• RFC 7234: HTTP Caching (obsoleted)
• RFC 9111: HTTP Caching
• Warning
• Caching
• HTTP status codes