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HTTP Immutable Responses

Document Type Replaced Internet-Draft (individual)
Expired & archived
Author Patrick McManus
Last updated 2016-12-19
Replaced by draft-ietf-httpbis-immutable
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-httpbis-immutable
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The immutable HTTP response Cache-Control extension allows servers to identify resources that will not be updated during their freshness lifetime. This assures that a client never needs to revalidate a cached fresh resource to be certain it has not been modified.


Patrick McManus

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)