Turbopack Persistent Caching

Tobias Koppers works for Vercel at the TurboPack team.

The main goal for TurboPack's development was to achieve instant builds and focus on incremental build performance.

Persistent caching is important for TurboPack to ensure that builds are incremental and efficient, even after process restarts.

TurboPack focuses on bottom-up caching and incremental build performance, unlike other tools that often use top-down caching.

TurboEngine is the caching engine that powers TurboPack, enabling granular caching and automatic cache invalidation.

TurboPack automatically tracks dependencies and invalidates caches only for changes that affect specific nodes in the dependency graph.

TurboPack plans to become a general-purpose bundler, making it easier to integrate with frameworks beyond Next.js.

No, TurboPack and TurboRepo are independent tools with different purposes and should not be confused.

Persistent caching introduces challenges such as process restarts, environment changes, and the need for granular cache invalidation.

Initial build times were initially slow due to large data dumps, but improvements in database and caching strategies have mitigated this issue.