cache-performance.png...

from-cache-origin.png...

first-non-cached-task.png...

fully-cached-task-execution.png...

mac-tar-cache-exp.png...

cache-admin-hit-rate.png...

"""
    fileSystem.createDirectory(cache.directoryPath)
    writeFile(cache.directoryPath, "$urlKey.0", entryMetadata)
    writeFile(cache.directoryPath, "$urlKey.1", entryBody)
    writeFile(cache.directoryPath, "journal", journalBody)
    cache = Cache(fileSystem, cache.directory.path.toPath(), Int.MAX_VALUE.toLong())
    client =
      client.newBuilder()
        .cache(cache)
        .build()

github-actions-cache-details.png...

// (see 'go help build') to force rebuilding of packages that
// depend on the updated C libraries.
//
// The go command also caches successful package test results.
// See 'go help test' for details. Running 'go clean -testcache' removes
// all cached test results (but not cached build results).
//
// The go command also caches values used in fuzzing with 'go test -fuzz',

func (b *Builder) cacheObjdirFile(a *Action, c cache.Cache, name string) error {
	f, err := os.Open(a.Objdir + name)
	if err != nil {
		return err
	}
	defer f.Close()
	_, _, err = c.Put(cache.Subkey(a.actionID, name), f)
	return err
}

func (b *Builder) findCachedObjdirFile(a *Action, c cache.Cache, name string) (string, error) {
	file, _, err := cache.GetFile(c, cache.Subkey(a.actionID, name))
	if err != nil {