20-06-2012, 06:08 PM
WebSphere MQSeries
WebSphere.ppt (Size: 1.05 MB / Downloads: 50)
Messaging Fundamentals
WebSphere MQSeries enables application programs to
communicate with each other using messages and queues.
This form of communication is referred to as commercial
messaging.
There are two methods for applications to communicate:
Fire and Forget
Request/Response
What is a message?
A message consists of a header and the attached application data.
Headers typically contain elements like:
Unique Message Id
Routing information
Message format
The following are examples of the data part of a message:
A record from an indexed or flat file
A row from a DB2 table
Individual columns from DB2 tables
Multiple rows or records
What is Queue Manager?
A queue manager is the subsystem software which controls access to the individual queues assigned to it. The queue manager logs all activity with each individual queue thus creating an audit trail. Multiple queue managers can coexist with each other. The limiting factor is the availability of system resources.
Customer Benefits of MQSeries
Wide selection of available platforms
Network is transparent to the application programmer
Applications can be changed quickly and easily in response to changing business needs
Applications run in an asynchronous manner - parallelism
Assured delivery of information - anywhere in the network
Transactional messaging support for coordinated updating of multiple data sources
Trusted, dependable for mission critical applications