mongodb的参数理解

Question

求问大神，对于mongodb以下几个参数我的理解对不对？maxWaitTime=120000 是指已经连接到mongodb，正在等待数据返回，这个等待的时间connectTimeout=10000 是指请求mongodb连接，还没有连接上，正在等待连接的时间socketTimeout=0 是指已经连接上了，正在传输数据，传输数据过程中会有耗时，这里就是等数据传递结束的等待时间

Answer 1

MongoDB Client驱动设置中网络相关的等待设置比较多，依次介绍如下：

1、Client找Server所需要等待的时间，在RS或者Shard环境下，Client需要找到它所需的Server

对应的参数：ServerSelctionTimeOut

2、找到Server之后就需要建立Connection

1）每次都创建Connection，对应的网络等待的参数就是：connectTimeout
2）Connection pooling的话，从Connection Pool取得Connection，对应的网络等待的参数：maxWaitTime.

3、找到Connection之后，就有了Socket通信，在客户端和MonogoDB的Socket通信过程中的网络等待时间的参数就是：socketTimeout

供参考。

Love MongoDB！Have Fun！

Answer 2

Stackoverflow上有一个有140次赞的回答：How to configure MongoDB Java driver MongoOptions for production use?

• connectTimeout. As the name suggest number of milliseconds the driver will wait before a connection attempt is aborted. Set timeout to something long (15-30 seconds) unless there's a realistic, expected chance this will be in the way of otherwise succesful connection attempts. Normally if a connection attempt takes longer than a couple of seconds your network infrastructure isn't capable of high throughput.

• maxWaitTime. Number of ms a thread will wait for a connection to become available on the connection pool, and raises an exception if this does not happen in time. Keep default.

• socketTimeout. Standard socket timeout value. Set to 60 seconds (60000).