06-raft.md

title: The Raft Consensus Algorithm speaker: aaron theme: light transition: slide2 headFiles: /static/css/light.css

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The Raft Consensus Algorithm

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CONTENTS

1. What is Raft ?
2. Appliacation ...
3. Let us Play it !

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What is Raft?

• consensus algorithm
• equivalent to Paxos
• designed to be easy to understand

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Raft User Study

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Raft Overview

1. Leader election

   • Select one of the servers to act as cluster leader
   • Detect crashes, choose new leader

2. Log replication

   • Leader takes commands from clients, appends them to its log
   • Leader replicates it log to other servers

3. Safety

   • Only a server with an up-to-date log can become leader

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Application

• Consensus algorithm
  • Paxos 、 Raft
• Consensus service
  • Zookeeper 、 etcd

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RAFTSCOPE VISUALIZATION

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<style> .current{ padding: 0px; } .slide-wrapper{ max-width: 1200px !important; } iframe{ height: 700px !important; } </style> <iframe src="http://thesecretlivesofdata.com/raft/"></iframe>