Scala Akka Actors for Trading Workflows: Promises and Pitfalls
The case for Akka actors in a trading system sounds compelling: isolated mutable state (no shared memory, no locks), message-driven concurrency, built-in supervision hierarchies for fault tolerance, and location transparency for distributed deployments. We used Akka for the order lifecycle workflow layer — the component that orchestrated the state machine from order received to fill confirmed. Here’s what we learned. ...