Strong Consistency support

[Siyuan he]

Hi All,

Chronicle-Map is an eventual consistency KV store. Is it possible to support strong Consistency support like Cassandra 2.X:

( http://www.datastax.com/documentation/cassandra/2.0/cassandra/dml/dml_config_consistency_c.html)?

Thanks,

siyuan

[Rob Austin]

>Is it possible to support strong Consistency support like Cassandra 2.X:

not easily, but we do have some techniques which can ensure that your data has been replicated. 

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[Siyuan he]

Yes. It's absolutely not an easy feature. But in some use cases, we do need strong consistency. 

Is there any plan to support Strong Consistency (at least at the quorum level)? 

[Rob Austin]

We are always open to adding new features especially if this work is client funded, but we have nothing currently on our roadmap to add strong consistency. If you are interested in getting this feature, please contact us directly at  <sa...@higherfrequencytrading.com>

Rob

[Peter Lawrey]

For strong consistency, you need to have a high degree of confidence it will work under all possible situations. i.e. it is the testing with real hardware which takes the time.

Depending on your use case, you could consider Queue to ensure updates are persists in a consistent manner, but this is more work for the developer admittedly.