nginx gzip on

    # Gzip settings.
    gzip                    on; 
    gzip_http_version       1.0;
    gzip_comp_level         6;  
    gzip_min_length         1024;
    gzip_proxied            any;
    gzip_vary               off;
    gzip_disable            msie6;
    gzip_buffers            64 8k; 
    gzip_types text/xml text/plain text/css application/javascript application/x-javascript application/rss+xml application/json text/json;