Scenarios where to use pub-sub pattern
* Where multiple receivers depend on same senders
* Scnarios with large number of senders and receivers
* Frequent and dynamic changes between senders and receivers
Components needed to build pub-sub flow
Publisher flow: this consists of any input node with publisher string and ‘Publisher’ keyword specified in transformation nodes or on MQ input node if MQ is an input node and publisher node
Publisher and subscriber definition on MQ explorer
Pubscriber flow with MQ input node which is a must have
message pulication flow
here we’re using file input node to publish the message so we need to be careful the ordering of MQMD, MQRFH2 and message body from top to bottom, if not the flow throws exception
create topic in mq explorer
create subcribtion in mq explorer and configure queue listeners
message subscribtion flow
