在 Heroku 部署上清除 Memcached [英] Clear Memcached on Heroku Deploy

问题描述

当我将 Rails 应用部署到 Heroku 时，自动清除 Memcached 的最佳方法是什么?

What is the best way to automatically clear Memcached when I deploy my rails app to Heroku?

我正在缓存主页，当我进行更改和重新部署时，页面是从缓存中提供的，并且不会合并更新.

I'm caching the home page, and when I make changes and redeploy, the page is served from the cache, and the updates aren't incorporated.

我想让这完全自动化.我不想每次部署时都必须清除 heroku 控制台中的缓存.

I want to have this be totally automated. I don't want to have to clear the cache in the heroku console each time I deploy.

谢谢！

推荐答案

我使用自动化 GitHub 的 bash 脚本部署我的应用程序 &Heroku 推送、数据库迁移、应用维护模式激活和缓存清除动作.

I deploy my applications using a bash script that automates GitHub & Heroku push, database migration, application maintenance mode activation and cache clearing action.

在这个脚本中，清除缓存的命令是:

In this script, the command to clear the cache is :

heroku run --app YOUR_APP_NAME rails runner -e production Rails.cache.clear

这适用于带有 Heroku Toolbelt 包的 Celadon Cedar.我知道这不是基于 Rake 的解决方案，但它非常有效.

This works with Celadon Cedar with the Heroku Toolbelt package. I know this is not a Rake-based solution however it's quite efficient.

注意:确保将 runner 命令的 environment/-e 选项设置为 production 作为否则将在 development 上执行.

Note : be sure you set the environment / -e option of the runner command to production as it will be executed on the development one otherwise.

编辑:几天以来(Rails 3.2.21)，我在 Heroku 上遇到了此命令的问题.我没有时间检查问题的根源，但删除 -e production 成功了，所以如果命令不成功，请改为运行这个:

Edit : I have experienced issues with this command on Heroku since a few days (Rails 3.2.21). I did not have time to check the origin the issue but removing the -e production did the trick, so if the command does not succeed, please run this one instead :

heroku run --app YOUR_APP_NAME rails runner Rails.cache.clear

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