// SHA-256 is used to prevent collisions
	hashPool        *sync.Pool
	providerName    string
	mu              sync.Mutex                          // guards call to set
	recordCacheSize func(providerName string, size int) // for unit tests
}

func newSimpleCache(clock clock.Clock, ttl time.Duration, providerName string) *simpleCache {
	cache := utilcache.NewExpiringWithClock(clock)

}

func TestMetrics(t *testing.T) {
	fakeClock := testingclock.NewFakeClock(time.Now())
	cache := newSimpleCache(fakeClock, 5*time.Second, "panda")
	var record sync.Map
	var cacheSize atomic.Uint64
	cache.recordCacheSize = func(providerName string, size int) {
		if providerName != "panda" {
			t.Errorf(`expected "panda" as provider name, got %q`, providerName)
		}
		if _, loaded := record.LoadOrStore(size, nil); loaded {