如何清除Doctrine APC缓存以进行生产? [英] How to clear Doctrine APC cache for production?

问题描述

当我在其中一个实体中添加一列并将其发布以用于生产时，我不得不重启Apache以清除Doctrine元数据APC/APCU缓存.

我尝试了以下所有命令，但没有一个对我有用:

php -r "apc_clear_cache();"
php -r "apcu_clear_cache();"

sudo php app/console doctrine:cache:clear-metadata
sudo php app/console doctrine:cache:clear-query
sudo php app/console doctrine:cache:clear-result

我收到有关--env = prod的错误消息

sudo php app/console doctrine:cache:clear-metadata  --env=prod
sudo php app/console doctrine:cache:clear-query  --env=prod
sudo php app/console doctrine:cache:clear-result --env=prod

 [LogicException]
  Cannot clear APC Cache from Console, its share in the Web server memory and not accessible from the CLI.

获取刷新刷新缓存的唯一方法是重启我的apache服务器，这有时可能是个问题.

我在Symfony项目中对Doctine的缓存设置:

doctrine:
    orm:
        metadata_cache_driver: apc
        result_cache_driver: apc
        query_cache_driver: apc
        second_level_cache:
            enabled: true
            log_enabled: false
            region_cache_driver: apc

在这种情况下，如何在每次将新的架构更新发布到生产环境时清除APC高速缓存而又不重新启动Apache.如果负载平衡器后面有许多服务器，则情况更糟.

解决方案

您必须了解，在Apache(或Nginx)下运行的Php与通过命令行运行的Php不同，它们是2个无法通信的Linux进程./p>

因此，即使您可以通过CLI清除缓存，也不会影响Apache下的php.

在Symfony控制器中调用apcu_clear_cache的最简单方法，或者您可以通过CLI使用Apache Php套接字.

我建议使用类似> http://gordalina.github.io/cachetool/，完美地做到了.

I have this issue when I add a column to one of my entities and release it for production I have to restart Apache in order to clear Doctrine metadata APC/APCU cache.

I have tried all commands below but none worked for me:

php -r "apc_clear_cache();"
php -r "apcu_clear_cache();"

sudo php app/console doctrine:cache:clear-metadata
sudo php app/console doctrine:cache:clear-query
sudo php app/console doctrine:cache:clear-result

I get this error message for --env=prod

sudo php app/console doctrine:cache:clear-metadata  --env=prod
sudo php app/console doctrine:cache:clear-query  --env=prod
sudo php app/console doctrine:cache:clear-result --env=prod

 [LogicException]
  Cannot clear APC Cache from Console, its share in the Web server memory and not accessible from the CLI.

The only way I can get it to refresh Doctrine cache is to restart my apache server which can sometimes be an issue.

My cache settings for Doctine in my Symfony project:

doctrine:
    orm:
        metadata_cache_driver: apc
        result_cache_driver: apc
        query_cache_driver: apc
        second_level_cache:
            enabled: true
            log_enabled: false
            region_cache_driver: apc

How can I clear APC cache in this case without restarting Apache each time I release new schema update to production. This is even worse if you have many servers behind a load balancer.

解决方案

You must understand that Php running under Apache (or Nginx) is different than the Php running via the command line, they are 2 Linux process that cant communicate.

So, even if you can clear the cache via CLI, this will not affect the php under Apache.

The easiest way it to call apcu_clear_cache inside a Symfony controller, or, you can use the Apache Php socket via the CLI.

I recommend to use a tool like http://gordalina.github.io/cachetool/, which do that perfectly.

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