Multisite control

With LN, you can now use the Exchange module to set up a batch-driven replication server. This enables you to maintain the same data at multiple sites.

Data replication can be synchronous or asynchronous. In synchronous replication, data is sent from one system to another as soon as the data changes. Asynchronous replication is batch-driven, that is, occurs at set time intervals or on demand.

In LN, data replication is asynchronous and can be accomplished as follows:

  • The source system runs an export process.
  • The source system sends a message to the target system or systems that notifies them that new data is available.
  • The target system runs an import process to assimilate the new data received from the source system.

In Exchange, a site is defined as an application server on which one or more exchange schemes for exporting or importing data are stored.