nginx 压缩gzip

ngx_http_gzip_module

ngx_http_gzip_module
　　用gzip方法压缩响应数据，节约带宽

gzip on | off;

　　启用或禁用gzip压缩

　　Default: gzip off;
　　Context: http, server, location, if in location

gzip_comp_level level;消耗CPU
　　压缩比由低到高：1 到 9， 默认：1 

gzip_disable regex ...;
　　匹配到客户端浏览器不执行压缩
　　示例：gzip_disable "MSIE[1-6]\."; 老IE不支持压缩

gzip_min_length length;
　　启用压缩功能的响应报文大小阈值

示例：

[[email protected] conf.d]# vi /apps/nginx4/conf/conf.d/test.conf
server {

        server_name www.magedu.org;
        root /data/site14/;
        access_log /apps/nginx4/logs/magedu.org.access.log  access_json ;
        default_type text/html ;


        gzip on;                      #启用压缩
        gzip_comp_level 6;            #压缩级别
        gzip_min_length 64;           #超过64字节压缩
        gzip_vary on;                 #在响应头加入压缩提示
        gzip_types text/xml text/css application/javascript;     #指定压缩的文件类型

       
}

 验证结果：

没启用压缩前测试：
[[email protected] conf.d]# curl -I www.magedu.org/messages   #复制到根资源目录下的messages日志文件
HTTP/1.1 200 OK
Server: nginx/1.14.2
Date: Sun, 07 Mar 2021 05:50:34 GMT
Content-Type: text/html
Content-Length: 632260                                     #不启用压缩时，报文头显示文件大小  
Last-Modified: Sun, 07 Mar 2021 01:12:36 GMT
Connection: keep-alive
Vary: Accept-Encoding
ETag: "60442884-9a5c4"
Accept-Ranges: bytes

启用压缩后测试：
[[email protected] conf.d]# curl -I --compressed www.magedu.org/messages
HTTP/1.1 200 OK
Server: nginx/1.14.2
Date: Sun, 07 Mar 2021 05:53:14 GMT
Content-Type: text/html
Last-Modified: Sun, 07 Mar 2021 01:12:36 GMT
Connection: keep-alive
Vary: Accept-Encoding
ETag: W/"60442884-9a5c4"
Content-Encoding: gzip                                     #压缩后报文头标识

日志输出验证：

压缩前日志输出：
{"@timestamp":"2021-03-07T13:46:11+08:00","host":"10.0.0.126","clientip":"10.0.0.125","size":632260,"responsetime":0.024,"upstreamtime":"-","upstreamhost":"-","http_host":"www.magedu.org","uri":"/messages","domain":"www.magedu.org","xff":"-","referer":"-","tcp_xff":"","http_user_agent":"curl/7.29.0","status":"200"}
压缩后日志输出：
{"@timestamp":"2021-03-07T13:50:09+08:00","host":"10.0.0.126","clientip":"10.0.0.125","size":84067,"responsetime":0.000,"upstreamtime":"-","upstreamhost":"-","http_host":"www.magedu.org","uri":"/messages","domain":"www.magedu.org","xff":"-","referer":"-","tcp_xff":"","http_user_agent":"curl/7.29.0","status":"200"}