Showcase: Mustela – Ultra-fast SSG in V (9,000+ pages/sec) with Zero-copy architecture

[filipos800]

Hi everyone,

I’ve been building a static site generator called Mustela, written entirely in V. My goal was to create a tool that is fast enough to outrun modern JS tooling like Vite and Bun.

Key Technical Specs:

• Zero-Copy Architecture: Data moves through the system via pointer passing.
• Stateful DSL Engine: I'm using "State Recycling" where the Lexer and Parser are allocated once and reset between files to minimize GC pressure and heap allocations.
• Performance: Builds 5,000 files in 528ms (on a standard i5 machine).

Real-world dev log (Mustela vs Vite):

Mustela is so fast it often finishes the build before Vite even registers the startup.

3:05:14 PM [mustela] BUILD | 6 files processed in 31 ms
VITE v8.0.10  ready in 247 ms

# Hot reload after changing a template:
3:05:21 PM [mustela] UPDATE | ./theme/default/document.mu
3:05:21 PM [mustela] BUILD  | 6 files processed in 13 ms (13549 µs)

I'm currently dogfooding it for my documentation hub: Mustela Hub
The source code for the documentation (templates, config, content) is public here: Mustela Web Github

I'd love to hear your thoughts on the "State Recycling" approach or answer any questions regarding the implementation in V!