fx-event-bus

A simple event bus for monoliths where every node can handle any event. Designed to support loose coupling between independent parts of an application domain.

What it is

• Bus-based architecture for monolithic apps.
• Uses Postgres FOR UPDATE SKIP LOCKED for concurrent polling and exactly-once delivery.
• Provides event handlers with typed, deserialized input.
• Fully safe and statically type-checked: no unsafe code, no interior mutability.
• Handles ~2k events/sec on a single DB connection; scale horizontally by adding more servers.

What it is not

• Not a casual pub/sub library. Nodes must fully handle an event once acknowledged, or risk losing it.
• Not designed for microservices where nodes handle events differently.