Server-Sent Event(SSE) in FastAPI Applications

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Server-Sent Events (SSE) is a server push technology enabling a server to push real-time updates to web clients over a single HTTP connection. This is particularly useful for applications requiring live updates, such as dashboards, notifications, or real-time analytics.

Introduction to SSE

• SSE is a standard allowing servers to initiate data transmission towards browser clients once an initial client connection is established.
• Unlike WebSockets, which allow bidirectional communication, SSE is unidirectional — data flows from the server to the client.
• This makes SSE a simpler alternative for scenarios where only the server needs to push updates to the client.

Why Use SSE?

SSE is advantageous in scenarios where:

1. Real-time Updates: Applications that need to push real-time updates to the client, such as…