Is incr/decr atomic in multithread mode?

[Dean Harding]

dormando wrote:
> X -> set "foo" 1
> A -> incr "foo" by 1
> B -> incr "foo" by 1
> 
> A -> returns 3
> B -> returns 3

That doesn't seem like "thread-safe" to me... The whole point of an 
"incr" and "decr" operation would be to *make it* thread-safe 
(otherwise, why not just "get" followed by a "set"? other than reducing 
network round-trips anyway)

Dean.