I would encourage anyone reading this to try Couchbase once more now that 3.0 is out the door. There are over 200 new features for starters. The performance, availability, scalability and easy management features of Couchbase Server makes for an extremely flexible, highly available database. The management UI is built-in and the APIs automatically discover the cluster nodes so there is no need for a load balancer from the application to the DB.
While we don't have a managed service at this time you can run couchbase on things like AWS, RedHat Gears, Cloudera, Rackspace, Docker Containers like CloudSoft, and much more. Regarding rebalancing it depends on what specifically you're referring to but Couchbase doesn't automatically rebalance after a node failure, as designed, but an administrator could setup auto failover for the first node failure and using our APIs you can also gain access to the replica vbuckets for reading prior to making them active or using the RestAPI you can enforce a failover by a monitoring tool. This is a special case but is possible to be done.
We tend not to rebalance in pretty much any mode unless the node is completely offline and never coming back or a new node is ready to be balanced in automatically. Here are a couple of guides to help anyone interested in seeing what one of the most highly performing NoSQL databases is all about.
- Couchbase Server 3.0
- Administration Guide
- REST API
- Developer Guides
Lastly, I would also encourage you to check out N1QL for distributed querying:
- N1QL Tutorial
- N1QL Guide
Thanks for reading and let me or others know if you need more help!
Austin
