One of the beautiful things about this is that the discrete log entry numbers now act as a clock for the state of the replicas—you can describe the state of each replica by a single number: the timestamp for the maximum log entry that it has processed. Two replicas at the same time will be in the same state. Thus, this timestamp combined with the log uniquely capture the entire state of the replica. This gives a discrete, event-driven notion of time that, unlike the machine’s local clocks, is easily comparable between different machines.
Logs# how it acts as a state representation
Share this highlighthttp://www.safaribooksonline.com/a/i-heart-logs/27112/