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:
“It’s important for parents to watch for trouble and convey to their daughters that, if it comes, they are strong enough to deal with it. Parents who send their [adolescent] daughters the message that they’ll be overwhelmed by problems aren’t likely to hear what’s really happening.”
—Mary Pipher (20th century)
“Hats off!
The flag is passing by!”
—Henry Holcomb Bennett (1863–1924)
“What avails it that you are a Christian, if you are not purer than the heathen, if you deny yourself no more, if you are not more religious? I know of many systems of religion esteemed heathenish whose precepts fill the reader with shame, and provoke him to new endeavors, though it be to the performance of rites merely.”
—Henry David Thoreau (1817–1862)