ra-jit compiles most large Rust projects with incremental builds up to 92x faster than cargo
julianweisser · x · 2026-10-25
ra-jit runs beside cargo, keeps your Rust project compiled in memory, and after an edit recompiles only changed functions — making rebuilds take milliseconds, up to 92x faster than cargo/rustc.
- Geometric-mean speedups: 24x on Linux aarch64, 12x on x86-64, 10x on macOS arm64.
- Works on major projects: ripgrep, fd, bat, nushell, helix, bevy, bun, axum and more.
- Targets hot-reload and live-coding workflows; open source (Apache-2.0/MIT), 217 stars on GitHub.
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