ESB and Messaging

Integrating Service-Oriented Business Rule Execution with an Enterprise Service Bus

Key Points

• Many ESB implementations require complex business rules to be integrated across several disparate systems
• Rule execution occurs only on the Business Rule Server(s)
• Rule execution can scale-out with demand by spreading load across a server farm
• A single, generic, rule-processing endpoint can be reused for many different types of messages for many different business problems
• XML or JSON state is passed in the request and the response usually contains modified state and/or related messaging
• In scale-out and high-availability scenarios, a load balancer can be used to spread message requests across a farm of servers
• InRule can be used to call back into other resources exposed by the service bus