这很大程度上取决于你的磁盘 IO、数据库大小、数据库配置、数据库链接、数据库优化等. 所以没有明确的答案.

This highly depends on your disk IO, the size of your database, the database configuration, the link to your database, the optimization of the database, etc, etc. So there is no definitive answer to that.

您可能需要考虑使用 memcached 来解决您遇到的缓存问题.由于您没有提供有关实际问题的信息，我怀疑您是否会得到很好的答案来解决您的问题.或者你只是想知道disk-io是否比mysql快?;-)

You might want to consider memcached for your caching problem you have. Since you provided no information about the actual issue i'm in doubt you'll get good answers to resolve your problem. Or do you just want to know if disk-io is faster than mysql? ;-)