gzip on;
gzip_min_length 1100;
gzip_buffers 4 8k;
gzip_proxied any;
gzip_types      text/plain text/html text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;[/code]

If you're looking to set some expiry headers to images, etc in nginx try this.

[code]location ~* ^.+\.(jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|doc|xls|exe|pdf|ppt|txt|tar|mid|midi|wav|bmp|rtf|js|mov)$ {
expires 30d;
break;

}