1 library(paxos): A Replicated Data Store
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Availability::- use_module(library(paxos)).(can be autoloaded)
Source[det]paxos_on_change(?Term, :Goal)
[det]paxos_on_change(?Key, ?Value, :Goal)
Executes the specified Goal when Key changes. paxos_on_change/2 listens for paxos_changed(Key,Value) notifications for Key, which are emitted as the result of successful paxos_set/3 transactions. When one is received for Key, then Goal is executed in a separate thread of execution.
Term is a compound, identical to that used for paxos_get/1.
Goal is one of:

  • a callable atom or term, or
  • the atom ignore, which causes monitoring for Term to be discontinued.