ISSUE-90: Interaction of DNT with caching and intermediaries

caching

Interaction of DNT with caching and intermediaries

State:

CLOSED

Product:

Tracking Preference Expression (DNT)

Raised by:

Roy Fielding

Opened on:

2011-10-11

Description:

One not-yet-an-issue that I'd like to bring up during the meeting
is how DNT interacts with intermediaries and shared caches.
For example, if the server's response must contain or be specific
to that client's DNT value, then the response will not be reusable
by shared caches. To minimize the damage, we should restrict
the server's response header field, if any, to the resources that
are already designed not to be cached (e.g., custom content and
advertising placements).

Overall, the goal should be to design DNT in a caching friendly way.

Related Actions Items:

• ACTION-16 on Thomas Lowenthal to Update mandatory response header proposal to acknowledge caching concerns - due 2011-10-28, closed

Related emails:

1. Re: ACTION-115: Write up counter-proposal to header with well-known URI (from rigo@w3.org on 2012-02-22)
2. PENDING REVIEW: Proposal to close a series of PENDING REVIEW Items (from mts@zurich.ibm.com on 2012-02-21)
3. Re: ACTION-115: Write up counter-proposal to header with well-known URI (from fielding@gbiv.com on 2012-02-13)
4. ACTION-115: Write up counter-proposal to header with well-known URI (from fielding@gbiv.com on 2012-02-11)
5. Re: ACTION-114 ISSUE-107 : Revised response header. (from ktrilli@truste.com on 2012-02-08)
6. Re: ACTION-114 ISSUE-107 : Revised response header. (from sharvey@google.com on 2012-02-05)
7. Re: ACTION-114 ISSUE-107 : Revised response header. (from sharvey@google.com on 2012-02-05)
8. ACTION-114 ISSUE-107 : Revised response header. (from tom@mozilla.com on 2012-02-03)
9. Re: Revised Response Header (from tom@mozilla.com on 2012-01-26)
10. RE: Revised Response Header (from kevsmith@adobe.com on 2012-01-25)
11. Re: Revised Response Header (from tom@mozilla.com on 2012-01-25)
12. Re: Revised Response Header (from singer@apple.com on 2012-01-25)
13. Re: Revised Response Header (from singer@apple.com on 2012-01-25)
14. Revised Response Header (from tom@mozilla.com on 2012-01-25)
15. diff of TPE editing since the FPWD (from fielding@gbiv.com on 2012-01-10)
16. RE: Proposed Agenda for 2011-11-30 TPWG call (from wileys@yahoo-inc.com on 2011-11-30)
17. RE: Proposed Agenda for 2011-11-30 TPWG call (from wileys@yahoo-inc.com on 2011-11-30)
18. Proposed Agenda for 2011-11-30 TPWG call (from mts@zurich.ibm.com on 2011-11-30)
19. tracking-ISSUE-90 (caching): Interaction of DNT with caching and intermediaries [Tracking Preference Expression (DNT)] (from sysbot+tracker@w3.org on 2011-10-11)

Related notes:

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