4 levels of replication technologies

Esse about state of art in replication technologies.

Replication is widely used to achieve various goals in information systems, such as better performance, fault tolerance, backup, etc. Four classes of replication technologies are available. Your decision about which technology to use will depend on the logical presentation of the data you are trying to replicate.

Full text of article is available at GridDynamics blog - http://blog.griddynamics.com/2010/02/4-levels-of-replication-technologies.html