Re: Comments on Byte range draft
Roy T. Fielding (fielding@avron.ICS.UCI.EDU)
Mon, 13 Nov 1995 17:06:27 -0800
Simon said:
> Lou- the 205 response is not part of http/1.0 as described, and this can
> lead to some caching confusion; if a 1.1 client is talking through a 1.0
> proxy to a 1.1 client, and a partial fetch is done, it's possible to the
> 1.0 proxy to keep a copy of the partial contents, yet not be aware that
> the contents are bogus- the next client to do a fetch could end up with
> partial data, yet not be aware of it.
That is not true of correct caching implementations. A cache cannot
store responses with a status code other than 200 unless the response
include an Expires header (or, now, a Cache-Control header) which
indicates that the response is cachable.
....Roy