Multiple delete & set?

[Brion Vibber]

I've noticed that while 'get' supports fetching many items in one call, 
'delete' and 'set' & co don't seem to.

Would it be useful to have such a thing? If we need to touch potentially 
a few hundred items in one go (say, invalidating cached HTML of many 
pages due to a change of state in some resource they share), it might be 
nice to not have to go through a command/ack sequence for every one. On 
the other hand, it might not be a huge win, and such cases should be 
rarer than reads.

-- brion vibber (brion @ pobox.com)