113 Heuristic Expiration

HTTP Warning code 113 Heuristic Expiration is used in combination with the Warning header and included with HTTP responses to indicate a cache heuristically chose a freshness lifetime greater than 24 hours, and the chosen lifetime has expired.

Example

Warning: 113 www.example.re "Heuristic Expiration"

See also

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