On Wed, May 15, 2013 at 6:55 AM, Wendy Roome <[email protected]>wrote:

> I don't think we've addressed the issue of how frequently a client should
> refresh cached data, such as the IRD, the network map, or the cost map.
>
> How about saying something like,
>
> "The ALTO Server SHOULD send an HTTP Expires header [RFC2616] in the
> response, as well as a Date header, to indicate the expected lifetime of
> the information. The client SHOULD refresh the data sometime after that.
> Note that the Expires date is a guideline, not a contract; the ALTO server
> may change the data at any time."
>
> I guess that should go in Section 8, but I'm not sure which subsection.
>

We used to have statements like this (guiding how to use HTTP), except we
received feedback that its better to just leave this out of the ALTO spec.

Rich


>
>         - Wendy Roome
>
>
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