Revisiting Token-based Atomic Broadcast Algorithms

Many atomic broadcast algorithms have been published in the last twenty years. The two main mechanisms used to tolerate failures (if we exclude synchronous systems and consider only crash failures) are unreliable failure detectors and group membership. Token-based atomic broadcast algorithms represent a large class of atomic broadcast algorithms. Interestingly all the token-based algorithms rely on group membership. The paper presents a token-based atomic broadcast algorithm that uses a failure detector, namely the new failure detector denoted by R. The failure detector R is compared with P and S. Solving consensus with token-based algorithms using R is also discussed.