内存数据库eXtremeDB的使用

    学习eXtremeDB之余，用Cluster API写了一段测试代码。对于Cluster中的每一个node都有一个唯一的node id，而node id的值通过cluster node IP与本机IP的比较来获得。代码如下：

const char* NodesAddr[NODES_NUM] = {"192.168.1.1",
    "192.168.1.2",
    "192.168.1.3",
    "192.168.1.4"};

const char* NodesPort[NODES_NUM] = {"20000","20000","20000","20000"};

.......

/* according to ip address to set node id */
    gethostname(host_name,sizeof(host_name));
    ht = gethostbyname(host_name);
    if(NULL != ht)
    {
        mco_memcpy(host_addr,inet_ntoa (*(struct in_addr *)*ht->h_addr_list),sizeof(host_addr));
    }

    for (i = 0; i < NODES_NUM; ++i) {
        if (mco_memcmp(host_addr,NodesAddr[i],sizeof(NodesAddr[i]))) {
            cl_params.node_id = i;
        }
    }