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Practical Consensus

Speaker  Miguel Castro

Affiliation  MSRC

Host  Chris Gould-Sandhu

Duration  01:43:36

Date recorded  29 May 2012

This lecture is about using consensus to implement state machine replication. It starts by defining the problem and presenting a simple solution for synchronous systems. Then it discusses the perils of relying on synchrony when implementing a real system. The rest of the lecture is focused on using Paxos to implement state machine replication. It describes Paxos and explains why it works. It covers a number of issues that are fundamental in a practical implementation, for example, garbage collection, state transfer, recovery, and reconfiguration. It also describes a number of optimizations and variants of Paxos. It ends with a brief description of Google’s Chubby and Yahoo’s Zookeeper that use variants of Paxos.

©2012 Microsoft Corporation. All rights reserved.
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