Nginx can cache static content of any type, so it can act as varnish for both his blog content and images and resize them on the fly instead of relying on multi

Nginx can cache static content of any type, so it can act as varnish for both his blog content and images and resize them on the fly instead of relying on multiple image sizes on disk or a separate app to serve images. Nginx is a highly efficient webserver when it is already holding the items in cache (and otherwise, it passes off dynamic content just fine but that is then up to the underlying application to perform as well).