PACELC Theorem & Distributed Databases

What is P.A.C.E.L.C. ?

PACELC Theorem States That :

CAP Theorem Trade-Offs

We can also see that CAP theorem is applicable for other scenarios including but not limited to:

* Multi Master Replication cluster setup

* Cluster with more than three nodes in Master Slave Replication

* Sharded databases like Cassandra/Dynamodb where Key Range is owned by more than one node.

* Network Partitioning happening across clients and cluster nodes where they are isolated from others.

PACELC as Extension to CAP Theorem

Applying PACELC Theorem to Databases

Cassandra (PA/Else Latency)
MongoDB (PA/Else Consistency)


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