<ul data-eligibleForWebStory="true">Modern web applications demand real-time interactions, revolutionizing user experiences.Real-time features like instant messaging, collaborative editing, and live streaming require powerful backend technologies.Asynchronous programming and high-performance frameworks are crucial for achieving real-time interactions.A Rust-based web backend framework excels in asynchronous processing and optimization for real-time applications.It leverages non-blocking I/O, lightweight task scheduling, and elegant error handling for high performance.The framework supports native WebSocket and SSE, efficient message broadcasting, and low-latency request processing.It offers flexible protocol support, robust state management, and advanced concurrency control.A practical case study of building an online collaborative whiteboard showcases the framework's capabilities.Compared to traditional and popular frameworks, the Rust-based framework shines in real-time scenarios.Choosing the right backend framework is crucial for enhancing the 'heartbeat' of modern web applications.