On 11/6/05, Tim Bray <[EMAIL PROTECTED]> wrote:
>
> On Nov 6, 2005, at 2:52 AM, Eric Scheid wrote:
>
> > You retrieve an entry, edit it, PUT it back, retain a copy. Later,
> > you edit
> > the entry again, and go to PUT it back... but in between those two
> > edits
> > someone else has edited the entry.
> >
> > Thus, "SHOULD perform a GET on the member resource before editing"
>
> Simply doing a GET is not a solution to the (ugly, hairy) general
> problem of concurrent editing.

You can detect lost updates using ETags:

"Detecting the Lost Update Problem Using Unreserved Checkout"
http://www.w3.org/1999/04/Editing/

   -joe

--
Joe Gregorio        http://bitworking.org

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