Q70: How does Turbopack's Turbo Engine achieve fine-grained incremental execution caching?
Turbopack is built on the Turbo Engine—a graph-based incremental computation framework written in Rust. Instead of re-compiling whole files or module graphs when code changes, the Turbo Engine tracks function inputs and outputs in a dynamic dependency graph. When a code modification occurs, only affected function nodes re-evaluate.
Key Takeaways
- Uses a fine-grained function-level execution dependency graph written in Rust.
- Re-evaluates strictly the exact function nodes impacted by code changes, delivering instant HMR.
Knowledge Check
What is the primary architectural difference between Webpack file-based compilation and Turbopack's Turbo Engine?