func (c *CommonCache) Forget(key string) bool {
	c.lock.Lock()
	defer c.lock.Unlock()
	delete(c.data, key)

	return !c.Has(key)
}
// clear cache value by key
clear cache value by key
// clear cache value by key
func (c *CommonCache) Forget(key string) bool {
	c.lock.Lock()
	defer c.lock.Unlock()
	delete(c.data, key)
	return !c.Has(key)
}
func ( c * CommonCache ) Forget ( key string ) bool { c . lock . Lock ( ) defer c . lock . Unlock ( ) delete ( c . data , key ) return ! c . Has ( key ) }
clear cache value by key
clear cache value by key