如何从Rails的后台进程将数据库密集型页面存储到缓存中 [英] How to store a database intensive page into cache from a background process in rails

问题描述

在我的网站上，我有一个数据库密集型页面，该页面缓存了5分钟.但是，当缓存过期并且必须重新呈现页面时，仍然会影响性能.我在想为什么不每隔5分钟从后台进程(如工作)中计算一次页面并将其存储在缓存中，并让用户请求每次都从缓存中得到服务.因此，无需用户等待该页面的呈现.

In my website i have a database intensive page which i cache for 5 mins. But still the performance is hit when the cache expires and the page has to be rendered freshly. I was thinking why not compute the page from a background process(like workling) once in 5 mins and store it in the cache and let the user request be serve from the cache everytime. And as a result no user have to wait for this page to be rendered.

有没有一种有效的方法来做到这一点? 任何帮助都非常感谢.

Is there a efficient way to do it? Any help very much appreciated.

谢谢

推荐答案

我建议您简单地从您的background-job或cron作业中为您的网页调用Web服务器.然后，让整个Rails堆栈处理该调用.您可以创建一个cron作业，每隔4-5分钟执行一次，然后将参数传递给页面以使其强制刷新缓存，例如:

I would recommend simply making a call to your web-server for the page from your background-job or cron job. Then you let your entire Rails stack handle the call. You could create a cron job to do this every 4-5 minutes and pass a parameter to the page to have it force a cache refresh, for example:

complex/page?force=true

然后，您的控制器/动作/模型将检查此参数的存在.如果出现强制，则页面将不使用缓存的版本，而是重新创建缓存.

Your controller/action/model would then check for the presence of this parameter. If force was present the page would not use the cached version, but would re-create the cache instead.

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