Chronon: A Rust-Based Distributed State Machine with Exactly-Once Side Effects
By
yousef06
Kettled twice. Extra chewy, extra trustworthy.
Summary
Chronon is a Rust-based distributed state machine implementation that provides deterministic, crash-safe operations with exactly-once side effect guarantees. It combines Viewstamped Replication (VSR) with a durable outbox pattern to ensure data durability, linearizable consistency, and exactly-once semantics even during crashes and leader failovers. The system is designed for applications that cannot afford data loss or duplicate side effect execution.
Key quotes
· 5 pulledChronon is a Rust implementation of a replicated log and consensus engine designed for systems that cannot afford to lose data or execute side effects twice.
It combines Viewstamped Replication (VSR) with a durable outbox pattern to guarantee exactly-once semantics even across crashes and leader failovers.
All committed entries survive any single-node failure
Linearizable reads and writes via quorum consensus
Exactly-Once Side effect
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