Nginx开启gzip压缩

http {
    gzip  on;
    gzip_min_length  1024;
    gzip_buffers  4 8k;
    gzip_comp_level  6;
    gzip_types  text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;
    gzip_vary on;
}