nautilus_trader: Production-Grade Rust-Native Event-Driven Architecture Reference (21.8k stars)

nautilus_trader (nautechsystems/nautilus_trader) is a production-grade trading engine written in Rust with a Python interface, featuring deterministic event-driven architecture with 21,833 stars. While domain-specific to trading, its architectural patterns — deterministic event sequencing, Rust-native message bus, actor model for domain services — are directly analogous to the ODS Zero-ETL event-driven backbone. Useful reference for Redpanda event schema design and actor-based service patterns in Rust.