MongoDB 部署副本集 + 代码中开启事务

首先,指定副本名称:

vim /etc/mongod.conf

replication:
 replSetName: shard1

在replication里面加入副本名称,多个相同副本,应该使用同样的名称

如果要修改mongodb占用的内存,可以这样设置:

storage:
  wiredTiger:
    engineConfig:
      cacheSizeGB: 1

进入mongo客户端:

mongosh 127.0.0.1:27017

rs.initiate({
   _id:"shard1",
   "members":[
     {
        _id:0,
        "host":"192.168.11.137:27017"
     },
     {
        _id:1,
        "host":"192.168.11.138:27017"
     },
     {
        _id:2,
        "host":"192.168.11.139:27017"
     }]  
})

 rs.status() 可以看到当前状态

db.isMaster() 查看谁成为了master

用MongoClient连接这几个副本集:

 var client = new MongoClient("mongodb://192.168.11.137:27017,192.168.11.138:27017,192.168.11.139:27017");

 用了副本集,就可以使用事务了:

           var client = new MongoClient("mongodb://192.168.11.137:27017,192.168.11.138:27017,192.168.11.139:27017");
            var session = client.StartSession();
            session.StartTransaction();


            var database = client.GetDatabase("MyTestDB");
            var collection = database.GetCollection<UserInfo>("UserInfo");
            collection.InsertOne( session, new UserInfo
            {
                Name = "Jack",
                CreateTime = DateTime.Now,
            });

            session.CommitTransaction();

 

posted @ 2023-01-17 15:57  IWing  阅读(276)  评论(0编辑  收藏  举报