How CAP theorem apply to Hazelcast?

[Mengsu Chen]

Hi All,

Can someone explain me how CAP theorem apply to Hazelcast?

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Tim

[Rahul]

Hazelcast provides AP i.e. in case of P, data continues to be available to connected nodes. However, Hazelcast also provides the ability to control C when P happens by using custom Merge Policies. So in essence, you get AP out of the box and can manage C with little customisation. See below link for custom merge policies - 

http://docs.hazelcast.org/docs/3.3/manual/html-single/hazelcast-documentation.html#network-partitioning-split-brain-syndrome

[Rahul]

My previous message went out a bit early...

Custom merge policy will let you control what you want to do with the data from the nodes which were partitioned, received updates and now coming back into the cluster. If the partitioned node/s do not come back in, then C is sacrificed anyways.