Serving precompiled assets with nginx

Following on from above with some extra bits I gleaned from the interweb:

For Rails 3.1:

location ~* ^/assets/ {
    # Per RFC2616 - 1 year maximum expiry
    # http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
    expires 1y;
    add_header Cache-Control public;

    # Some browsers still send conditional-GET requests if there's a
    # Last-Modified header or an ETag header even if they haven't
    # reached the expiry date sent in the Expires header.
    add_header Last-Modified "";
    add_header ETag "";
    break;
}

For Rails 3.0 use

location ~* ^/(images|javascripts|stylesheets)/ {
    ... copy block from above ...
}