Ari Seyhun

I build event-sourced systems and databases in Rust, and write about what I learn along the way.

A single-app event-sourcing runtime over the Dynamic Consistency Boundary.

An immutable event store with global ordering, built for the Dynamic Consistency Boundary.

Actors in Rust, with an eye towards simplicity and efficiency.

A distributed event store built in Rust.

A Shopify app that lets merchants sell extended warranties and keep the profit.

Sports betting analytics that compare bookmaker odds in real time to surface profitable edges.

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How I Solved Event Sourcing Sep 11, 2026

I rebuilt the same application four times in four years. This is the version I stopped rewriting.
Building an Event-Sourcing Application in Rust with SierraDB Nov 20, 2025

A practical guide to event sourcing in Rust, from defining aggregates to persisting events and rebuilding state with SierraDB.
SierraDB: A Distributed Event Store Built in Rust Oct 21, 2025

A purpose built event store database built in Rust
Comparing Rust Actor Libraries: Actix, Coerce, Kameo, Ractor, and Xtra Jan 17, 2025

A Comprehensive Performance and Feature Comparison of Five Leading Rust Actor Libraries.
Helix vs. Neovim: A Modern Showdown of Terminal Editors Jan 9, 2025

A deep dive into some differences between two modern text edtors.