Astro 6.4 Shipped a Rust Markdown Engine That Cuts a Minute Off Build Time. Here's the One Catch Before You Switch.
Astro 6.4 ships Sätteri, a Rust-based Markdown pipeline that saved over a minute per build on Astro's own docs site. For content-heavy sites it's a rare upgrade with measurable payoff — and exactly one tradeoff that decides whether you can use it yet.