Targeted HTTP Response Header Fields for Cache Control

Document Type Expired Internet-Draft (httpbis WG)
Authors Stephen Ludin  , Mark Nottingham  , Yuchen Wu 
Last updated 2021-09-18 (latest revision 2021-03-17)
Stream Internet Engineering Task Force (IETF)
Expired & archived
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Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This specification defines a convention for HTTP response header fields that allow directives controlling caching to be targeted at specific caches or classes of caches. It also defines one such header field, targeted at Content Delivery Network (CDN) caches.


Stephen Ludin (
Mark Nottingham (
Yuchen Wu (

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