Replication across data centers
In previous chapters, we have touched on the idea that Cassandra can automatically replicate across multiple data centers. There are other systems that allow for similar replication; however, the ease of configuration and general robustness set Cassandra apart. Let's take a detailed look at how this works.
Setting replication factors
You will recall from Chapter 3, Replication that replication is configured via CQL at the keyspace level. Since we're on the topic of multiple data centers, it's important to understand that you'll always want to use the NetworkTopologyStrategy, since the SimpleStrategy does not allow for setting replication factor for each data center.
Attempting to use SimpleStrategy in a multi-data ...
Get Cassandra 3.x High Availability - Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
