- * and the $key from a cached storage in $a->config[$uid].
- * $instore is only used by the set_config function
- * to determine if the key already exists in the DB
- * If a key is found in the DB but doesn't exist in
- * local config cache, pull it into the cache so we don't have
- * to hit the DB again for this item.
+ * and the $key from a cached storage either from the self::$adapter
+ * (@see IConfigAdapter ) or from the static::$cache (@see IConfigCache ).