At 20.44 +1000 00-11-05, jason andrade wrote:
>Apologies if this is an ignorant question, but where do mirror sites fit
>in the scheme of things.. are they just less sophisticated reverse proxies?
Hope you have seen the _whole_ plan and not only the proposed charter for WEBI.
If not, see below.
paf
> Michael Condry
> Ian Cooper
> Mark Day
> Mark Nottingham
> Hilarie Orman
>
> ----------------------
>
> There are currently multiple proposals for IETF Applications Area working
> groups related to Web transport/content distribution; WREC/WEBI, OPES and
> CDNP. This discussion proposes deliniations between the groups, in order to
> clarify their roles.
>
> Historically, WREC focused on caching and replication. WEBI is proposed to
> replace WREC and slightly broaden its scope to include issues of general
> import to intermediaries. WEBI work items will be distinguished by being
> generic, in that they are not specific to one application domain (such as
> content peering or value-added proxies). For example, invalidation
> mechanisms and intermediate discovery protocols are of interest in multiple
> applications. Note that if requirements for a particular application can not
> be met by a general mechanism, it may be appropriate to define an
> application-specific mechanism as well. WEBI might produce other groups as
> workload requires.
>
> The Open Proxy Services architecture (OPES) allows for services to be
> constructed "inside the network", allowing both the overlay of value-added
> services and the introduction of a processing model in intermediaries. OPES
> work items will be distinguished in that they involve definition and/or
> support of value-added services on intermediaries. For example, this may
> include a means of vectoring messages to "callout servers" and configuration
> and managment of services, but should exclude general content routing
> mechanisms.
>
> Content Distribution Network Peering (CDNP) defines a model and mechanisms
> for the interconnection and cooperation of networks for content-related
> tasks: direction (directing requests for content), distribution (moving
> content out to surrogates) and accounting (tracking the delivery of content
> from surrogates). A single network may have its own mechanisms for these
> tasks, and WEBI may define or standardize elements of those mechanisms. CDNP
> focuses on the interactions required for direction, distribution, and
> accounting between two or more networks with different administrations,
> where the networks are potentially using different local mechanisms for
>
> Within WREC/WEBI, OPES and CDNP are largely orthogonal. The groups
> should cooperate in order to avoid conflicting specifications.
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