Data consistency
Tunable Consistency and Consistency Levels
- How are consistent read and write operations handled?
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An introduction to how DataStax Enterprise (DSE) extends eventual consistency with tunable consistency to vary the consistency of data read and written.
- How do DataStax Enterprise transactions differ from RDBMS transactions?
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DataStax Enterprise (DSE) does not use RDBMS ACID transactions; instead DSE offers atomic, isolated, and durable transactions with eventual/tunable consistency.
- How do I accomplish lightweight transactions with linearizable consistency?
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When and why to use lightweight transactions.
- How do I discover consistency level performance?
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Use tracing to discover what the consistency level is set to, and how it affects performance.
- How is the consistency level configured?
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Consistency levels in DSE can be configured to manage availability versus data accuracy.
- How is the serial consistency level configured?
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Serial consistency levels in DSE control lightweight transaction (LWT) isolation.
- How are read requests accomplished?
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A coordinator node can send three types of read requests to a replica.
- How are write requests accomplished?
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The write consistency level determines how many replica nodes must respond with a success acknowledgment in order for the write to be considered successful
