System Management

• Messaging systems are asynchronous and distributed
• Multiple platforms
• Difficult to detect errors
• Difficult to configure (property file hell)
• How can we effectively administer a messaging system that is distributed across multiple platforms and a wide geographic area? 

Business Activity Monitoring (BAM) solutions focus on the payload data contained in the message, for example the Dollar value of all orders placed in the last hour. Many of the patterns presented in this section are general enough that they can be used for either purpose.