For the "content-rewrite" feature, the "expires" param inappropriately supersedes normal Cache-control mechanisms

[mmarum-sugarcrm]

Original author: [email protected] (May 11, 2012 23:37:39)

SPECIFICATION BUGS ONLY - Description
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The "content-rewrite" feature allows a container to redirect links contained within a gadget through the container with optional caching. One of the params is "expires", which specifies the maximum length of time the container is permitted to cache the redirected content. Having the "expires" param here, however, contradicts and violates the standard HTTP Cache-Control mechanism, which defines the canonical standard for specifying how long an item is allowed to be cached. If the original source of the content does not wish it to be cached longer than a given period of time, then it should set an appropriate cache-control in the http response. Because of this, the "expires" param for the "content-rewrite" feature SHOULD be deprecated and eventually removed. If the developer truly wishes to maintain tight control over the caching of a resource, then they should exclude that resource from rewrite by using "exclude-url".

Document affected:
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Original issue: http://code.google.com/p/opensocial-resources/issues/detail?id=1311