launchpad-dev team mailing list archive

[James Westby <jw+debian@xxxxxxxxxxxxxxx>]

On Wed, 03 Mar 2010 08:02:27 +1100, Robert Collins <robert.collins@xxxxxxxxxxxxx> wrote:
> Speaking from an HTTP point of view...
> 
> derived aspects of an object that have *semantic* value should be
> included in the ETag; because the ETag controls caching. Read only has
> nothing to do with whether a change to a field should invalidate
> caches. 

So you would disagree with removing bug_heat from the etag calculation?

(I didn't read that from your reply, but taking a position to hear
definite counterarguments if any)

> For PATCH commands, they supply If-Match to only patch the object they
> think they are starting from. Its possible server side to decide that:
>  - the Etag is a recent one
>  - only readonly fields have been changed since that etag was issued
>  - so we can accept the patch

It sounds like that would require significant changes server-side to
store the etags?

Thanks,

James