System Management

System Management patterns aim to monitor the amount of sent messages and their processing times without analyzing the message data, except for some fields in the message header in selected patterns. This is in contrast to Business Activity Monitoring, which directly analyzes the payload data contained in a message.

This chapter introduces various system management patterns and how each can be simulated using WSO2 ESB.

	Channel Purger	Removes unwanted messages, which can disturb tests or running systems, from a channel.
	Control Bus	Administers a messaging system that is distributed across multiple platforms and a wide geographic area.
	Detour	Routes a message through intermediate steps to perform validation, testing or debugging functions.
	Message History	Lists all applications that the message passed through since its origination.
	Message Store	Reports against message information without disturbing the loosely coupled and transient nature of a messaging system.
	Smart Proxy	Tracks messages on a service that publishes reply messages to the Return Address specified by the requester.
	Test Message	Ensures the health of message processing components by preventing situations such as garbling outgoing messages due to an internal fault.
	Wire Tap	Inspects messages that travel on a Point-to-Point Channel.