Chapter 31. Set Up Cross-Datacenter Replication
31.1. Cross-Datacenter Replication Operations
Example 31.1. Cross-Datacenter Replication Example
Figure 31.1. Cross-Datacenter Replication Example
SFO. Each site hosts a running JBoss Data Grid cluster made up of three to four physical nodes.
Userscache is active in all three sites -
SFO. Changes to the
Userscache at the any one of these sites will be replicated to the other two as long as the cache defines the other two sites as its backups through configuration. The
Orderscache, however, is only available locally at the
LONsite because it is not replicated to the other sites.
Userscache can use different replication mechanisms each site. For example, it can back up data synchronously to
SFOand asynchronously to
Userscache can also have a different configuration from one site to another. For example, it can be configured as a distributed cache with
LONsite, as a replicated cache in the
NYCsite and as a distributed cache with
RELAY2facilitates communication between sites. For more information, see Section F.4, “About RELAY2”