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Creators/Authors contains: "Dardik, Ian"

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  1. ; ; (, Formal Methods in Computer-Aided Design (FMCAD))
    Accepted Manuscript Full Text Available
  2. ; ; ; ; ; ; (, IEEE)
    Free, publicly-accessible full text available April 26, 2026
  3. ; ; (, CPP 2022: Proceedings of the 11th ACM SIGPLAN International Conference on Certified Programs and Proofs)
    We present a formal, machine checked TLA+ safety proof of MongoRaftReconfig, a distributed dynamic reconfiguration protocol. MongoRaftReconfig was designed for and implemented in MongoDB, a distributed database whose replication protocol is derived from the Raft consensus algorithm. We present an inductive invariant for MongoRaftReconfig that is formalized in TLA+ and formally proved using the TLA+ proof system (TLAPS). We also present a formal TLAPS proof of two key safety properties of MongoRaftReconfig, LeaderCompleteness and StateMachineSafety. To our knowledge, these are the first machine checked inductive invariant and safety proof of a dynamic reconfiguration protocol for a Raft based replication system. 
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