The project relies on Rayon [1] for scheduling parallel tasks and Cranelift [2] to JIT the hot loops.

There are plenty of other interesting features like auto-FFI, bytecode caching (similar to Python's .pyc files), and "daemonize" mode (similar to mod_perl or FastCGI).

[1] https://docs.rs/rayon/latest/rayon/

[2] https://cranelift.dev