http://wiki.apache.org/cassandra/UUID if you don't need transactional ordering, ZooKeeper or something comparable if you do.
2010/4/26 Roland Hänel <rol...@haenel.me> > Typically, in the SQL world we use things like AUTO_INCREMENT columns that > let us create a unique key automatically if a row is inserted into a table. > > What do you guys usually do to create identifiers for use in Cassandra? > > Do we only rely on "currentTimeMills() + random()" to create something that > is 'unique enough' (but theoretically not fail-safe)? Or are some people > here using systems like ZooKeeper for this purpose? > > -Roland > >
