Message Passing Systems
Distributed object and remote method invocation systems like ONC RPC, CORBA, Java RMI, DCOM, SOAP, .NET Remoting, CTOS, QNX Neutrino RTOS, OpenBinder, D-Bus, Unison RTOS and similar are message passing systems.
Message passing systems have been called "shared nothing" systems because the message passing abstraction hides underlying state changes that may be used in the implementation of sending messages.
Message passing model based programming languages typically define messaging as the (usually asynchronous) sending (usually by copy) of a data item to a communication endpoint (Actor, process, thread, socket, etc.). Such messaging is used in Web Services by SOAP. This concept is the higher-level version of a datagram except that messages can be larger than a packet and can optionally be made reliable, durable, secure, and/or transacted.
Messages are also commonly used in the same sense as a means of interprocess communication; the other common technique being streams or pipes, in which data are sent as a sequence of elementary data items instead (the higher-level version of a virtual circuit).
Read more about this topic: Message Passing
Famous quotes containing the words message, passing and/or systems:
“Gossip, then, is content, a message about people; rumor is a process. It takes a bit of gossip and reshapes it, modifies it in some way, and passes it along from individual to individual in different ways.”
—Jack Levin (b. 1941)
“Young poets bewail the passing of love; old poets, the passing of time. There is surprisingly little difference.”
—Mason Cooley (b. 1927)
“Not out of those, on whom systems of education have exhausted their culture, comes the helpful giant to destroy the old or to build the new, but out of unhandselled savage nature, out of terrible Druids and Berserkirs, come at last Alfred and Shakespeare.”
—Ralph Waldo Emerson (1803–1882)