void cacheScheduleIO(redisDb *db, robj *key, int type);
void cacheCron(void);
int cacheKeyMayExist(redisDb *db, robj *key);
-void cacheSetKeyExists(redisDb *db, robj *key);
+void cacheSetKeyMayExist(redisDb *db, robj *key);
void cacheSetKeyDoesNotExist(redisDb *db, robj *key);
/* Set data type */