Hi, please take a look of the WCIP draft before the IETF meeting, as we'd
spend time on issue discussions and won't cover the draft in detail. This
draft is a strawman, at least the following things need more work:
- clearly define the relationship of wcip with normal cache-control directives.
- specify in more detail the role of relay point, especially for channel
aggregation. Can we or can we not aggregate heartbeats, possibly but
cutting freshness guarantee.
- pick a security model. Use SSL, or PGP signature, or both, and also the
security of the channel info.
- do we need a default port number? pros and cons wrt. to port 80.
- are people happy with persistent TCP connection? are people happy with
"delta consistency" (vs. eventual consistency, strong consistency, or
anything else).
- in the absence of a off-the-shelf realtime reliable multicast protocol,
can we still run wcip on multicast UDP for scalability. See section 3.2.3.
- preloading, log reporting, advanced event notification, programability,
... future stuff on vertical peering and dynamic content
What do people think?
Dan
At 08:12 AM 11/15/00 -0800, Ian Cooper wrote:
>>To: IETF-Announce: ;
>>From: Internet-Drafts@ietf.org
>>Subject: I-D ACTION:draft-danli-wrec-wcip-00.txt
>>Date: Wed, 15 Nov 2000 06:41:12 -0500
>>
>>A New Internet-Draft is available from the on-line Internet-Drafts
>>directories.
>>
>>
>> Title : WCIP: Web Cache Invalidation Protocol
>> Author(s) : D. Li, P. Cao, M. Dahlin
>> Filename : draft-danli-wrec-wcip-00.txt
>> Pages : 26
>> Date : 14-Nov-00
>>
>>Cache consistency is a major impediment to scalable content
>>delivery. This document describes the Web Cache Invalidation
>>Protocol (WCIP) which uses invalidations and updates to keep
>>changing objects up to date in web caches. Moreover, it allows
>>automatic one-to-may relay and many-to-one aggregation in a CDN
>>(content delivery network) environment.
>>
>>A URL for this Internet-Draft is:
>>http://www.ietf.org/internet-drafts/draft-danli-wrec-wcip-00.txt
>>
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