mongodb连接池 [英] mongodb connection pooling

问题描述

我正在使用Java驱动程序访问mongodb.我以为数据库连接池是由驱动程序内部处理的，但是每次访问数据库时，连接计数都会增加.

I am using Java driver to access mongodb. I assume the db connection pooling is internally handled by the driver.But my connection count getting increased every time I access db.

这是我的serverStatus日志.

This is my serverStatus log.

"connections" : {
            "current" : 276,
            "available" : 543
    }

我需要显式关闭mongo连接吗?我应该如何在Java中管理连接池?

Do I need to explicitly close mongo connections? how should I manage connection pooling in java?

推荐答案

您应该使用单个Mongo对象，这样它将为您提供缓冲.但是，如果确实使用多个对象，则确实需要显式调用.close().

You should use a single Mongo object, so it will do pooling for you. However, if you do use multiple objects, you do need to call .close() explicitly.

来自: http://www.mongodb.org/display/DOCS/Java+Tutorial

Mongo类设计为线程安全的，并在它们之间共享 线程.通常，您只为一个给定的数据库集群创建1个实例 并在您的应用中使用它.如果出于某种原因您决定创建 许多mongo实例，请注意:

The Mongo class is designed to be thread safe and shared among threads. Typically you create only 1 instance for a given DB cluster and use it across your app. If for some reason you decide to create many mongo intances, note that:

所有资源使用限制(最大连接数等)适用于每个mongo 实例以处置实例，请确保调用mongo.close() 清理资源

all resource usage limits (max connections, etc) apply per mongo instance to dispose of an instance, make sure you call mongo.close() to clean up resources

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