<ul data-eligibleForWebStory="true">Build real-time chat app without external dependencies using Server-Sent Events (SSE) for messaging.Explore benefits of SSE over websockets like simpler setup and implementation.Understand downsides of SSE such as lack of native binary support and heartbeat mechanism.Learn how to design a simple non-scalable chat application and make it scalable.Implement server message endpoints for handling messages and storing in a file-based database.