FastAPI WebSockets: Navigating State, Authentication, and Multi-Worker Scaling FastAPI's WebSocket implementation often appears straightforward, mirroring the ease of building standard HTTP endpoints. This apparent simplicity, however, frequently conceals the underlying complexities of developing robust, scalable real-time applications. A common pitfall involves a WebSocket service functioning perfectly in a single-worker development environment, only to exhibit silent failures—like messages failing to broadcast—when deployed across multiple worker processes in production. This article explores critical architectural considerations to move beyond basic WebSocket examples and build truly production-ready, distributed real-time systems. The Deceptive Simplicity of Basic WebSocket Implementations FastAPI's WebSocket capabilities, leveraging Starlette, offer a clean, async/await syntax that feels familiar to anyone building HTTP APIs. This ease of use, however, can be misleading.…