tree ba4bdd62cc0d92eb4f032957c9295a2fe758516d
parent cb70642a430d7e12b83ec2679e04dd0cfb542b00
author Shawn O. Pearce <sop@google.com> 1262291643 -0800
committer Shawn O. Pearce <sop@google.com> 1262469848 -0800

Add a utility function for atomic updates

Doing a single-row atomic update is often possible in distributed
databases like Apache Cassandra, but more complex multi-row updates
aren't supported.  Create a variant of updating that makes the
single row case easy to use and identify.

Change-Id: Ibd500d93e5a771e370d78c7f88c10f5d439feb32
Signed-off-by: Shawn O. Pearce <sop@google.com>