if t.updating.TryLock() {
			go func() {
				defer t.updating.Unlock()
				t.update()
			}()
		}
		return v.v, v.e
	}

	// Get lock. Either we get it or we wait for it.
	t.updating.Lock()
	if time.Since(time.UnixMilli(t.lastUpdateMs.Load())) < ttl {
		// There is a new value, release lock and return it.
		v = t.valErr.Load()
		t.updating.Unlock()
		return v.v, v.e
	}
	t.update()
	v = t.valErr.Load()

func (c Config) MatchesSize(size int64) bool {
	configLock.RLock()
	defer configLock.RUnlock()

	return c.Enable && c.BlockSize > 0 && size <= c.BlockSize
}

// Update updates new cache frequency
func (c *Config) Update(ncfg Config) {
	configLock.Lock()
	defer configLock.Unlock()

	c.Enable = ncfg.Enable
	c.Endpoint = ncfg.Endpoint
	c.BlockSize = ncfg.BlockSize