如何配置用于异步复制的orientdb

Question

当使用orientdb图形模型时，是否有一个全局配置来建立所有db写入异步复制到其他节点?

Answer 1

你所需要的是在文件$ORIENTDB_HOME/config/default-distributed-db-config.json。这是默认内容:

{
    "replication": true,
    "autoDeploy": true,
    "hotAlignment": true,
    "resyncEvery": 15,
    "clusters": {
        "internal": {
            "replication": false
        },
        "index": {
            "replication": false
        },
        "*": {
            "replication": true,
            "readQuorum": 1,
            "writeQuorum": 2,
            "failureAvailableNodesLessQuorum": false,
            "readYourWrites": true,
            "partitioning": {
                "strategy": "round-robin",
                "default": 0,
                "partitions": [
                    [ "<NEW_NODE>" ]
                ]
            }
        }
    }
}

默认writeQuorum为2。这意味着在将ACK发送到客户端之前，它等待并检查来自至少2个节点的答案。您可以将其设置为1，这样所有的写操作都将是异步的。