"We assume a model of reliable communication—messages cannot be lost (only delayed). This is a reasonable assumption if
we consider a reliable protocol, such as TCP."
Duplicated and lost messages will happen in practice - TCP attempts to build reliable communication on an unreliable medium. Not clear from the paper if this matters.
I think the larger misunderstanding of the paper is the requirement that paxos have a leader - lamport's synod algorithm does not require a leader, the leader is an optimization!
Without a long-lived leader, the performance would be so bad that I doubt there is a single production implementation that doesn't use that optimization.
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[ 3.6 ms ] story [ 24.1 ms ] thread"We assume a model of reliable communication—messages cannot be lost (only delayed). This is a reasonable assumption if we consider a reliable protocol, such as TCP."
Paxos network assumptions:
"Messages can take arbitrarily long to be delivered, can be duplicated, and can be lost, but they are not corrupted." - http://research.microsoft.com/en-us/um/people/lamport/pubs/p...
I think the larger misunderstanding of the paper is the requirement that paxos have a leader - lamport's synod algorithm does not require a leader, the leader is an optimization!