Improving Healthcare Outcomes with Elixir's Actor Model

Waterpark, developed by HCA Healthcare, is a novel Elixir-based healthcare integration engine leveraging the actor model of concurrent computation to manage millions of patient digital twins in real-time. Unlike traditional systems that store data as static snapshots, Waterpark's patient actors maintain dynamic, evolving states that encapsulate each patient’s entire healthcare history. This architecture, coupled with fault tolerance and hot code upgrades, underscores Waterpark's ability to improve patient outcomes and support innovative healthcare solutions without downtime. Key innovations include a plug-in system enabling rapid deployment of critical healthcare alerts and integration with external data sources to address emergent healthcare challenges like COVID-19 and organ donor procurement.