Preface
Apache Cassandra is one of the most popular NoSQL data stores based on the research papers Dynamo: Amazon's Highly Available Key-value Store and Bigtable: A Distributed Storage System for Structured Data. Cassandra is implemented with the best features from both of these research papers. In general, NoSQL data stores can be classified into the following groups.
- Key-value data store
- Column-family data store
- Document data store
- Graph data store
Cassandra belongs to the column-family data store group. Cassandra's peer-to-peer architecture avoids single-point failures in the cluster of Cassandra nodes and gives the ability to distribute the nodes across racks or data centers. This makes Cassandra a linearly scalable data store. In other words, ...
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