性能优化-nginx配置gzip

将如下代码配置到nginx即可，位置无要求

gzip_static  on;
gzip_proxied expired no-cache no-store private auth;
gzip on; 
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 5;
gzip_types text/plain application/javascript text/css application/xml;
gzip_vary on;