How djust's Rust VDOM Achieves 10-100x Faster Rendering

The Performance Challenge

Traditional Django template rendering is powerful but can become a bottleneck for complex, dynamic pages. Each request requires parsing templates, resolving context, and generating HTML - all in Python.

Enter the Rust VDOM

djust takes a different approach. Instead of regenerating entire HTML pages, we use a virtual DOM (VDOM) implemented in Rust. This provides:

• Minimal Diffs: Only changed elements are sent to the client
• Native Speed: Rust's zero-cost abstractions and memory safety
• Efficient Patches: Binary-encoded DOM patches over WebSocket

Benchmark Results

In our benchmarks comparing djust to traditional Django template rendering:

How It Works

When a user interacts with a djust component:

1. The event is sent to the server via WebSocket
2. Python handlers update the component state
3. Rust computes the minimal VDOM diff
4. Only the diff is sent back to the client
5. The client applies the patch to the real DOM

The Best of Both Worlds

You write Python. You get Rust performance. That's the djust promise.