Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Cousin(noun) one collaterally related more remotely than a brother or sister; especially, the son or daughter of an uncle or aunt. 2  Cousin(noun) a title formerly given by a king to a nobleman, particularly to those of the council. 3  Cousin(noun) allied; akin.
As everyone has explained MSMQ is used as a queue for messages. Messages can be wrapper for actual data, object and anything that you can serialize and send across the wire. MSMQ has it's own limitations. MSMQ 1.0 and MSMQ 2.0 had a 4MB message limit. This restriction was lifted off with MSMQ 3.0.
From Wikipedia, the free encyclopedia. Apache ActiveMQ is an open source message broker written in Java together with a full Java Message Service (JMS) client. It provides Enterprise Features which in this case means fostering the communication from more than one client or server.he communication is managed with features such as computer clustering and ability to use any database as a JMS persistence provider besides virtual memory, cache, and journal persistency. ActiveMQ is used in enterprise service bus implementations such as Apache ServiceMix and Mule.