code: public Long del(final String... keys) {
          return this.execute(new RedisClusterCallback<Long>() {
              public Long doInRedisCluster(RedisCluster redisCluster) {
                  return redisCluster.del(keys);
              }
  
              public int getPartitionNumber() {
                  if (keys == null || keys.length < 1) {
                      return GatewayPartitionNumber.NOT_MATCHED;
                  }
                  return GatewayPartitionNumber.get(keys[0]);
              }
  
              public AffinityState getState() {
                  return AffinityState.WRITE;
              }
          });
      }
docs: /*
  @see RedisClusterCommands#del(java.lang.String)