RMS - Java Remote Method Invocation
JMS - Java Messaging Service
AJP - Apache Jserv Protocol
RMS :
Java specific API that expects the caller and receiver to be available at the time of communication.
JMS :
JMS is a reliable messaging subsystem. Messages can be passed even if one of the parties is not available.
AJP :
The http protocol is quite expensive in terms of band width - it's an ascii text protocl with words like "POST" and phrases like "Content-type:" taking up more bandwidth than is really needed, and having to be interpreted at destination too.
So the ajp protocol (Apache Java Protocol) was established to allow for much less expensive exchanges between upstream and downstream servers that are to be closely linked.
UR's Key Run ;-)
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