Types
A number of different levels of consistency can be reached. Apache Cassandra uses three levels:
- ONE: Data is written after at least one node's commit table and memory table has been modified with the new data, and the node response has reached the client.
- QUORUM: Data has to be written to nodes before responding to the client.
- ALL: All nodes have to read (write) the data.
Read more about this topic: Eventual Consistency
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