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Subject: Public review comments: Caching of resources - clarification needed

In WSRP 2.0, it is not clear how a producer/consumer would manage 
caching of resources such that intermediate entities such as caching 
proxies, and also user agents can participate in HTTP 1.1 style of caching.

With the WSRP 1.0 style, the resource originator could set caching 
headers like Etag, and Last-Modified. Intermediaries/user agents could 
then cache resources by following these headers, and also supplying 
If-Modified-Since/If-Not-Modified-Since and Etag headers.

How do these headers map to the input/output of the getResource 
operation? I can see that the Etag header could be mapped to 
validateTag, but what about other caching headers? Who is responsible 
for generating these headers and how do these headers map to WSRP 2.0?

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