Chapter 25
Consistent Core
Maintain a smaller cluster providing stronger consistency to allow the large data cluster to coordinate server activities without implementing quorum-based algorithms.
Problem
When a cluster needs to handle a lot of data, it uses more and more servers. For a cluster of servers, there are some common requirements, such as selecting a server to be the master for a particular task, managing group membership information, mapping data partitions to servers, and so on. This functionality requires a strong consistency guarantee of linearizability. The implementation also needs to be fault-tolerant. A common approach is to use a fault-tolerant consensus algorithm based on Majority Quorum. However, in quorum-based systems, ...
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