Namespace
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Cache early, cache often.
Namespace offers managed GitHub Actions runners with fast local caching, large disks, and optional remote builders.
Namespace is a managed runner platform aimed at teams that want a near drop-in replacement for GitHub-hosted runners with better storage and caching behavior. It also offers ARM support, macOS runners, remote terminal access, and additional tooling around preview environments and remote Docker builds.
It is a sensible option when build performance depends heavily on cache locality or when workflows need more disk space than the default GitHub runners provide.