A new algorithm for building robust distributed systems

Credit: CC0 Public Domain

EPFL researchers have developed a new distributed algorithm that, for the first time, solves one of the key performance and reliability problems affecting most of the currently-deployed consensus protocols. The work has been published in Proceedings of the 29th Symposium on Operating Systems Principles.

Consensus is one of the fundamental problems in distributed systems. It allows a group of machines to maintain multiple copies of data and update them consistently, even when a fraction of the machines might fail.
Take the example of three servers that need to store three copies of data and keep track …

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