Skip to content
Opensource internals
  • Posts

Toolchain

Go's Build Cache: Content Hashes, Action IDs and Why Rebuilds Are Instant

Oct 21, 2026 13 min read Jay Hubbert

Go’s build cache keys each action on a hash of its inputs and stores the output under a hash of its contents, so a rebuild that changes nothing runs no compiler at all.

GoInternalsBuildToolchainPerformance

Read more →

© 2026 Jay Hubbert · Built with Hugo 0.168.0

RSS ·