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Cassandra 3.x High Availability

Cassandra 3.x High Availability

By : Strickland
3.8 (6)
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Cassandra 3.x High Availability

Cassandra 3.x High Availability

3.8 (6)
By: Strickland

Overview of this book

Apache Cassandra is a massively scalable, peer-to-peer database designed for 100 percent uptime, with deployments in the tens of thousands of nodes, all supporting petabytes of data. This book offers a practical insight into building highly available, real-world applications using Apache Cassandra. The book starts with the fundamentals, helping you to understand how Apache Cassandra’s architecture allows it to achieve 100 percent uptime when other systems struggle to do so. You’ll get an excellent understanding of data distribution, replication, and Cassandra’s highly tunable consistency model. Then we take an in-depth look at Cassandra's robust support for multiple data centers, and you’ll see how to scale out a cluster. Next, the book explores the domain of application design, with chapters discussing the native driver and data modeling. Lastly, you’ll find out how to steer clear of common anti-patterns and take advantage of Cassandra’s ability to fail gracefully.
Table of Contents (10 chapters)
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Chapter 3.  Replication

Replication is perhaps the most critical feature of a distributed data store, as it would otherwise be impossible to make any sort of availability guarantee in the face of a node failure. As you learned in Chapter 1 , Cassandra's Approach to High Availability, Cassandra employs a sophisticated replication system that allows fine-grained control over replica placement and consistency guarantees.

In this chapter, we'll explore Cassandra's replication mechanism in depth, including the following topics:

  • The replication factor
  • How replicas are placed
  • How Cassandra resolves consistency issues
  • Maintaining the replication factor during node failures
  • Consistency levels
  • Choosing the right replication factor and consistency level

At the end of this chapter, you'll be able understand how to configure replication and tune consistency for your specific use cases. You'll be able to intelligently choose options that will provide the fault tolerance and...

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