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Messengers Edit

A Messenger is an EXA that exists to transfer data without the use of M-communications.

There are several reasons you may decide to do this:

  • Global M communications are already being used and it's not practical to send more messages that way.
  • There is no EXA in place to receive a message
  • Sending and receiving don't have guaranteed timings, and you don't want to be blocked sending to M. A messenger allows you to "fire and forget".
  • Using T as well means a Messenger can carry twice as much as the M channel can.
  • If you need to transfer files, Messengers can carry files.
  • Messengers are good if you don't care particularly about the order messages are received in, although they can also be made to keep order themselves correctly with care.
  • Messengers are extremely good if there is complex logic required to decide where to route the message to (e.g. navigating a file system).