BTW, buffer was written way back when memory was measured
in kilobytes and the ethernet was 10 mgb, so things have changed a bit, and
its effectivness is questionable :-)
My scenario:
prog1 | prog2
where both are daemons. prog1 does all the work, and sends commands for
prog2 to do when needed. I don't want prog1 to block while prog2 is busy
executing the command. So a buffer is inserted between the two:
prog1 | buffer | prog2
Asynchronous execution of commands. It's as simple as that.
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