One reason is the need to keep backup files of everything.
其中的一个原因就是需要把所有的文件进行备件。
Everything is kept in RAM and the database is just a backup.
所有的东西都保存在RAM里，而数据库只是用作备份。
If you have a fresh clean backup copy of your site, you can just remove everything and then restore the whole site form that backup.
如果你有最新的好的备份文件，你可以移除所有的，然后用备份恢复整个站点。
If you have a fresh clean backup copy of your site, you can just remove everything and then restore the whole site form that backup.
如果你有最新的好的备份文件，你可以移除所有的，然后用备份恢复整个站点。
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