A Basic Client-Server Model

10/27/2004


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Table of Contents

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A Basic Client-Server Model

Cluster replication

Wide Area Replication

Replication

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Primary and Backups

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Primary and Backups (2)

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Weak Consistency (weaker update semantics)

The Anti-Entropy method

The Anti-Entropy Method (cont.)

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Primary Component

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What can be improved?

Group Communication “Tools”

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The Basic Idea

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Not so simple…

Delicate Points

Extended Virtual Synchrony

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Replication Engine - State Diagram

Throughput Comparison (LAN)

The CAIRN Wide-Area Network

Throughput Comparison (WAN)

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Author: Yair Amir

Email: yairamir@cs.jhu.edu

Home Page: http://www.cnds.jhu.edu/courses/cs437/

Other information:
Distributed Systems (600.437), Lecture 8: Replication