Automatic cache purging based on new file creation ?

Hi all,

I've been reading about NGINX lately and ran into the following 'issues'. It seems that caching with FastCGI does not support automatic cache purges ?

For example :

1. I would like to be able to upload static pages through Filezilla into a certain directory and have the cache update itself immediately (and automatically). I need updates of static content to be reflected immediately in the cache...
2. I would like to use FastCGI to cache dynamic content (wordpress) and have the cache update itself immediately after a content update. I know this is possible through a plugin, but I read that FastCGI is much faster.

Does anyone know if there is a way to do these things ?

Thanks,
Lex