清除 Symfony 中的缓存:`cache:clear` 或 `rm -rf`? [英] Clear cache in Symfony: `cache:clear` or `rm -rf`?

问题描述

./bin/console cache:clear --env=prod 和 rm -rf var/cache/prod/* 有什么区别?控制台命令很慢.Bash 命令很快.那么，...为什么使用 cache:clear 而不是 rm?

Which is the difference between ./bin/console cache:clear --env=prod and rm -rf var/cache/prod/*? Console command is very slow. Bash command is fast. So, ... why use cache:clear instead of rm?

推荐答案

cache:clear 擦除先前创建的缓存项，但也，它会进行缓存预热.在此基础上，您的应用程序应该加载得非常快，因为缓存已经预先填充.

cache:clear wipes previously created cache items, but also, it does a cache warm-up. Upon this, you application should load very fast due to the fact that cache was already pre-populated.

另一方面，rm -rf 只完成工作的一部分.在此之后第一次尝试加载应用程序时，您应该会注意到性能影响.

On the other hand, rm -rf does only one part of the job. You should notice performance impact when you try to load you app the first time after this.

我还想指出另一件事:权限.例如，如果您以 root 身份登录，并且没有通过 setfacl(或任何其他方法)设置访问权限，则 cache:clear很可能会创建 root 拥有的缓存项.这可能是一个问题.

I would also like to point out another thing: permissions. If you are logged in as root for example, and you did not set access rights via setfacl (or any other method), cache:clear will most probably create your cache items owned by root. This could be an issue, down the line.

希望这会有所帮助...

Hope this helps a bit...

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