Difference between Percona XtraDB Cluster and MySQL Cluster [closed]

Question

How does the newly released Percona XtraDB Cluster compare with MySQL Cluster?

http://www.mysqlperformanceblog.com/2012/01/09/announcement-of-percona-xtradb-cluster-alpha-release/

Answer 1

Simply the Percona XtraDB Cluster is MySQL 5.5 with the Galera replication (synch multimaster) + other patches. That means that you still keep your data in disk + ram cache where MySQL Cluster keeps all data in RAM and saves to disk. In short, if your dataset is bigger than your RAM you need Percona's cluster.