Server Sent Events | Alchemists

Server Sent Events (SSE) allows a server to push data, one way, to a client over a long lived HTTP connection without the client needing to make multiple requests. Even better, the client will automatically reconnect if the connection drops. Here’s a few use cases that SSE is great for: Real-time notifications. Live dashboards. Live edits and rendering of updated content. Progress updates of long running tasks. Implementing SSE is fairly trivial in Ruby especially when using Rack 3.0.0 middleware and htmx on the front end so let’s explore further by diving into the code!.