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取消Rails数据库连接

[英]Cancel Rails DB connection

原文 2013-06-17 16:14:57 7 1 ruby-on-rails/ ruby/ database/ postgresql/ ruby-on-rails-4

I am writing an app that uses Server Side events with ActionController::Live. 我正在编写一个使用Server Side事件与ActionController :: Live的应用程序。 It is using the puma app server. 它使用的是puma app服务器。 A method in the Messages controller stays alive while the user is connected waiting for messages from Redis. 当用户连接等待来自Redis的消息时，Messages控制器中的方法保持活动状态。

The problem is that I don't want to connect to Postgres on this method. 问题是我不想在这种方法上连接到Postgres。 After I open the app in six tabs it has over five connections defined by the pool size in the config/database.yml file and the app crashes. 在六个选项卡中打开应用程序后，它在config/database.yml文件中有超过五个由池大小定义的连接，并且应用程序崩溃。

Is there anyway to tell my app when that method is called it doesn't need to connect to the database as there is no ActiveRecord query calls in it? 无论如何告诉我的应用程序何时调用该方法它不需要连接到数据库，因为它没有ActiveRecord查询调用？

1 个解决方案

One possible way to do this is to use middleware. 一种可能的方法是使用中间件。 A good resource for setting up your own middleware is http://railscasts.com/episodes/151-rack-middleware?view=asciicast 设置自己的中间件的一个很好的资源是http://railscasts.com/episodes/151-rack-middleware?view=asciicast

However, I'm not convinced that the problem you're experiencing is because of too many connections to Postgres. 但是，我不相信你遇到的问题是因为与Postgres的连接太多了。 This is just a hunch, but I think your problem may lie elsewhere. 这只是一种预感，但我认为你的问题可能在其他地方。