http://asubiotto.com/tags/rust/Recent content in Rust on Alfonso SubiottoHugoen-usTue, 08 Jul 2025 00:00:00 +0000http://asubiotto.com/writing/deterministic-simulation-testing-rust/Tue, 08 Jul 2025 00:00:00 +0000http://asubiotto.com/writing/deterministic-simulation-testing-rust/<p>At Polar Signals, we&rsquo;re building a new Rust database using a state machine architecture for deterministic simulation testing (DST). This approach provides complete control over concurrency, time, randomness, and failure injection by implementing core components as single-threaded state machines that communicate through messages.</p> <h2 id="the-theater-of-state-machines">The Theater of State Machines</h2> <p>Our architecture uses a &ldquo;dimensionality reduction&rdquo; technique by constraining all interactions to message passing. This allows us to centralize control of testing ingredients in a single message bus, which acts as the central director of the testing process.</p>