Mongo連接池操縱MongoOptions

Mongo連接池操縱MongoOptions  

2012-07-19 18:04:54|  分類： mongodb |  標簽： |字號大中小 訂閱

 

 

MongoOptions


java驅動中，可以在獲取mongo實例時，指定一些參數，如下：

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



MongoOptions mongoOptions=new MongoOptions();

Mongo mongo=new Mongo(serverAddress,mongoOptions);

參數列表如下：



#控制系統在發生連接錯誤時是否重試 ，默以為false --boolean

mongo.options.autoConnectRetry=false

#每個主機答應的連接數（每個主機的連接池大小），當連接池被用光時，會被阻塞住 ，默以為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

#被阻塞線程從連接池獲取連接的最長等待時間（ms） --int

mongo.options.maxWaitTime

#在建立（打開）套接字連接時的超時時間（ms），默以為0（無窮） --int

mongo.options.connectTimeout=0

#套接字超時時間;該值會被傳遞給Socket.setSoTimeout(int)。默以為0（無窮） --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

#//指明是否答應驅動從次要節點或者奴隸節點讀取數據，默以為false --boolean

mongo.options.slaveOk=false

#假如為true，驅動每次update后會發出一個getLastError命令來保證成功，默以為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