Mongo连接池操纵MongoOptions  

2012-07-19 18:04:54|  分类： |  标签： |字号大中小 

 

 

MongoOptions

java驱动中，可以在获取mongo实例时，指定一些参数，如下：

ServerAddress serverAddress=new ServerAddress("127.0.0.1",27017);

MongoOptions mongoOptions=new MongoOptions();

Mongo mongo=new Mongo(serverAddress,mongoOptions);

参数列表如下：

#控制系统在发生连接错误时是否重试 ，默以为false --boolean

mongo.options.autoConnectRetry=false

#每个主机答应的连接数（每个主机的连接池大小），当连接池被用光时，会被阻塞住 ，默以为10 --int

mongo.options.connectionsPerHost=10

#multiplier for connectionsPerHost for # of threads that can block if connectionsPerHost is 10, and threadsAllowedToBlockForConnectionMultiplier is 5, then 50 threads can block more than that and an exception will be throw --int

mongo.options.threadsAllowedToBlockForConnectionMultiplier=5

#被阻塞线程从连接池获取连接的最长等待时间（ms） --int

mongo.options.maxWaitTime

#在建立（打开）套接字连接时的超时时间（ms），默以为0（无穷） --int

mongo.options.connectTimeout=0

#套接字超时时间;该值会被传递给Socket.setSoTimeout(int)。默以为0（无穷） --int

mongo.options.socketTimeout=0

#This controls whether or not to have socket keep alive turned on (SO_KEEPALIVE). defaults to false --boolean

mongo.options.socketKeepAlive=false

#Override the DBCallback factory. Default is for the standard Mongo Java driver configuration --DBCallbackFactory

mongo.options.dbCallbackFactory

#//指明是否答应驱动从次要节点或者奴隶节点读取数据，默以为false --boolean

mongo.options.slaveOk=false

#假如为true，驱动每次update后会发出一个getLastError命令来保证成功，默以为false --boolean

mongo.options.safe=false

#If set, the w value of WriteConcern for the connection is set to this. Defaults to 0; implies safe = true --int

mongo.options.w=0

#If set, the wtimeout value of WriteConcern for the connection is set to this. Defaults to 0; implies safe = true --int

mongo.options.wtimeout=0

#Sets the fsync value of WriteConcern for the connection. Defaults to false; implies safe = true --boolean

mongo.options.fsync=false