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Best Practice for Cassandra Read and Write Consistency
It appears the default consistency levels for Cassandra are Read: LOCAL_ONE and Write: ONE
Can someone please confirm that these are the recommended values for Production systems; and, if so, why LOCAL_QUORUM is not recommend to increase accuracy?
Posted: 1 year ago
MOD
Pegasystems Inc.
GB
@AlexM171 The default consistency levels for Cassandra in Pega Platform are indeed Read: ONE and Write: ONE. These levels mean that for any read or write operation, only one replica node needs to respond. While LOCAL_QUORUM could potentially increase accuracy by requiring a majority of nodes to respond, it also increases the time needed for all replicas to update and declare success. This could impact the performance of your system. Therefore, while you can modify the consistency levels based on your specific needs, the default levels are recommended for most production systems to balance consistency and performance.
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