Grokking the Advanced System Design Interview
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Cassandra Consistency Levels

Let's explore how Cassandra manages data consistency.

What are Cassandra's consistency levels?

Cassandra's consistency level is defined as the minimum number of Cassandra nodes that must fulfill a read or write operation before the operation can be considered successful. Cassandra allows us to specify different consistency levels for read and write operations. Also, Cassandra has tunable consistency, i.e., we can increase or decrease the consistency levels for each request.

There is always a tradeoff between consistency and performance




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