BookKeeper is a replicated log service which can be used to build replicated state machines. A log contains a sequence of events which can be applied to a state machine. BookKeeper guarantees that each replica state machine will see all the same entries, in the same order. It provides back end support to distributed systems, such as messaging systems, coordination systems, filesystems, etc.

BookKeeper - Replicated Log Service

Copycat is a fault-tolerant state machine replication framework. Built on the Raft consensus algorithm, it handles replication and persistence and enforces strict ordering of inputs and outputs, allowing developers to focus on single-threaded application logic. Its event-driven model allows for efficient client communication with replicated state machines, from simple key-value stores to wait-free locks and leader elections. You supply the state machine and Copycat takes care of the rest, making it easy to build robust, safe distributed systems.


Copycat - A novel implementation of the Raft consensus algorithm

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BookKeeper - Replicated Log Service

Copycat - A novel implementation of the Raft consensus algorithm

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BookKeeper - Replicated Log Service

Copycat - A novel implementation of the Raft consensus algorithm

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