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Showing posts from December, 2024

NuRaftOnTheRocks: A Replicated Key-value Store using RocksDB and NuRaft

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NuRaft is an open source C++ Raft implementation. NuRaft is highly plugable; it allows you to provide your own persistent log store and state manager and integrate it with your state machine. That allows you to integrate NuRaft with any application whenever you need log replication. In this post, I show how you can integrate NuRaft with RocksDB to build a replicated key-value store.  Raft Raft is a consensus and log replication protocol. Raft allows multiple processes in a distributed system to agree on the entries of a shared log. Using such a guarantee, we can achieve state machine replication as follows: having a set of state machines starting at the same initial state, we record operations on the state machine on a shared log, and have each state machine perform operations specified in the shared log. This way all state machines remain consistent with each other. State machine replication is very useful. We can create replicated data stores. In this post, we w...