api/java/src/main/java/com/navercorp/redis/cluster/connection/RedisConnectionAsync.java
protected byte[][] toByteArrays(final byte[] keyspace, final byte[] uid, final byte[] serviceCode, final byte[] key,
                                  final long expireMillis, final byte[][] values) {
        final byte[][] allArgs = new byte[values.length * 2 + 4][];

        int index = 0;
        allArgs[index++] = keyspace;
        allArgs[index++] = uid;
        allArgs[index++] = serviceCode;
        allArgs[index++] = key;
        byte[] expireTime = RedisProtocol.toByteArray(expireMillis);

        for (int i = 0; i < values.length; i++) {
            allArgs[index++] = values[i];
            allArgs[index++] = expireTime;
        }

        return allArgs;
    }
protected byte[][] toByteArrays(final byte[] keyspace, final byte[] uid, final byte[] serviceCode, final byte[] key,
                                  final long expireMillis, final byte[][] values) {
        final byte[][] allArgs = new byte[values.length * 2 + 4][];

        int index = 0;
        allArgs[index++] = keyspace;
        allArgs[index++] = uid;
        allArgs[index++] = serviceCode;
        allArgs[index++] = key;
        byte[] expireTime = RedisProtocol.toByteArray(expireMillis);

        for (int i = 0; i < values.length; i++) {
            allArgs[index++] = values[i];
            allArgs[index++] = expireTime;
        }

        return allArgs;
    }
To byte arrays.

@param keyspace     the keyspace
@param uid          the uid
@param serviceCode  the service code
@param key          the key
@param expireMillis the expire millis
@param values       the values
@return the byte[][]