func (c *Cache) Describe(in chan<- *prometheus.Desc) {
	c.hitsTotal.Describe(in)
	c.refreshTotal.Describe(in)
	c.missesTotal.Describe(in)
}
func (c *Cache) Describe(in chan<- *prometheus.Desc) {
	c.hitsTotal.Describe(in)
	c.refreshTotal.Describe(in)
	c.missesTotal.Describe(in)
}
// Describe implements prometheus Collector interface.