Nginx optimization for WebDAV access from OS X Finder. This config snippet ensures that nginx will ignore requests for useless dot files generated by the Finder (.DS_Store, ._*, …)

webdav_treat_osx.conf

#
# Ignore requests for useless dot files generated by OS X Finder (WebDAV).
#
# This little hack speeds-up a WebDAV access from the Finder significantly and
# also prevents messing storage with these annoying files.
#

location ~ \.(_.*|DS_Store|Spotlight-V100|TemporaryItems|Trashes|hidden)$ {
    access_log  off;
    error_log   off;

    if ($request_method = PUT) {
        return 403;
    }
    return 404;
}

location ~ \.metadata_never_index$ {
    return 200 "Don't index this drive, Finder!";
}

Thanks, just what I needed!