完成后，正确关闭猫鼬的连接 [英] Properly close mongoose's connection once you're done

问题描述

我在不希望连续运行的脚本中使用猫鼬，而且我面对的似乎是一个非常简单的问题，但我找不到答案.简单地说，一旦我调用将请求发送到mongodb的任何mongoose函数，我的nodejs实例就不会停止，而我必须使用Ctrl + c或Program.exit()手动将其杀死.

I'm using mongoose in a script that is not meant to run continuously, and I'm facing what seems to be a very simple issue yet I can't find an answer; simply put once I make a call to any mongoose function that sends requests to mongodb my nodejs instance never stops and I have to kill it manually with, say, Ctrl+c or Program.exit().

代码大致如下:

var mongoose = require('mongoose');

// if my program ends after this line, it shuts down as expected, my guess is that the connection is not really done here but only on the first real request ?
mongoose.connect('mongodb://localhost:27017/somedb'); 

// define some models

// if I include this line for example, node never stop afterwards
var MyModel =  mongoose.model('MyModel', MySchema);

我尝试将调用添加到mongoose.disconnect()，但没有结果.除此之外，一切都很好(查找，保存等).

I tried adding calls to mongoose.disconnect() but no to result. Aside from that, everything works fine (finding, saving, ...).

这与该人完全一样，很遗憾，他没有收到任何答复: https ://groups.google.com/group/mongoose-orm/browse_thread/thread/c72cc1c51c76e661

This is the exact same issue as this person, sadly he did not receive any answer: https://groups.google.com/group/mongoose-orm/browse_thread/thread/c72cc1c51c76e661

谢谢

接受以下答案，因为它在技术上是正确的，但是如果有人再次遇到此问题，则当您询问是否还有查询时，似乎猫鼬和/或mongodb驱动程序实际上并未关闭连接运行中.

accepted the answer below as it is technically correct, but if anyone ever hit this problem again, it seems that mongoose and/or the mongodb driver does not actually close the connection when you ask it to if there are still queries running.

它甚至根本不记得断开连接的调用，一旦查询运行完成就不执行此操作；它只会丢弃您的呼叫，不会引发任何异常或任何类似情况，并且永远不会真正关闭连接.

It does not even remember the disconnect call at all, it does not do it once queries are finished running; it just discards your call with no exception thrown or anything of the sort, and never actually close the connection.

因此，您可以使用它:如果您希望每个查询都可以正常工作，请确保在调用断开连接()之前已处理了所有查询.

So there you have it: make sure that every query has been processed before calling disconnect() if you want it to actually work.

推荐答案

您可以使用以下方式关闭连接

You can close the connection with

mongoose.connection.close()

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