如何进行Apache服务mod_deflate模块分析

如何进行Apache服务mod_deflate模块分析，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

LAMP架构应用实战—Apache服务

mod_deflate压缩模块

今天来介绍下比较常用的模块mod_deflate压缩模块

一：mod_deflate模块介绍

mod_deflate压缩模块提供了DEFLATE输出过滤器，允许服务器将内容发送给客户端之前进行压缩，节省带宽资源

二：mod_deflate模块查看

直接编译安装查看如下

[root@Centos modules]# /application/apache/bin/apachectl -l|grep mod_deflate

mod_deflate.c

以DSO方式编译安装查看如下

[root@Centos modules]# ls -l|grep defla

-rwxr-xr-x. 1 root root  86591 Sep 18 15:26 mod_deflate.so

但是以上两种方式不能同时安装，否则会出现错误

[root@Centos conf]# /application/apache/bin/apachectl -M|grep deflate

 deflate_module (shared)

查看帮助

[root@Centos httpd-2.4.23]# ./configure --help|grep deflate    

  --enable-deflate        Deflate transfer encoding support

编译、或以DSO安装方式安装与前面的缓存模块安装相同，这里就不再介绍了

三：mod_deflate配置

配置前看下HTTP头的信息

[root@Centos modules]# curl -I http://blog.abc.com:9999/

HTTP/1.1 200 OK

Date: Sun, 18 Sep 2016 07:37:58 GMT

Server: Apache/2.4.23 (Unix)

Last-Modified: Fri, 09 Sep 2016 12:19:55 GMT

ETag: "1f-53c122a061992"

Accept-Ranges: bytes

Content-Length: 31

Cache-Control: max-age=31104000

Expires: Wed, 13 Sep 2017 07:37:58 GMT

Content-Type: text/html

备份并配置模块

[root@Centos conf]# cp httpd.conf httpd.conf.0918

[root@Centos conf]# vi httpd.conf 

中间内容省略

<IfModule mod_deflate.c>

DeflateCompressionLevel 9

SetOutputFilter DEFLATE

AddOutputFilterByType DEFLATE text/html text/plain /text/xml

AddOutputFilterByType DEFLATE application/javascript

AddOutputFilterByType DEFLATE text/css

</IfModule>

"httpd.conf" 521L, 18903C written

语法检查与服务重启

[root@Centos conf]# /application/apache/bin/apachectl -t

Syntax OK

[root@Centos conf]# /application/apache/bin/apachectl graceful

[root@Centos conf]# lsof -i tcp:9999

COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME

httpd    2156   root    8u  IPv6  16255      0t0  TCP *:distinct (LISTEN)

httpd   13911 daemon    8u  IPv6  16255      0t0  TCP *:distinct (LISTEN)

httpd   13912 daemon    8u  IPv6  16255      0t0  TCP *:distinct (LISTEN)

httpd   13913 daemon    8u  IPv6  16255      0t0  TCP *:distinct (LISTEN)

[root@Centos conf]# ps -ef|grep http

root 2156 10 15:13 ? 00:00:00 /application/apache2.4.23/bin/httpd -k restart

daemon13911 2156  0 15:49  00:00:00 /application/apache2.4.23/bin/httpd -k restart

daemon 13912 2156  0 15:49   00:00:00 /application/apache2.4.23/bin/httpd -k restart

daemon 13913  2156  0 15:49 ?00:00:00 /application/apache2.4.23/bin/httpd -k restart

root  14003  1941 015:50 pts/0   00:00:00 grep http

测试配置内容

[root@Centos conf]# curl -I http://blog.abc.com:9999/deflate.html

HTTP/1.1 200 OK

Date: Sun, 18 Sep 2016 09:32:39 GMT

Server: Apache/2.4.23 (Unix)

Last-Modified: Sun, 18 Sep 2016 08:10:40 GMT

ETag: "309-53cc3bb2de520"

Accept-Ranges: bytes

Content-Length: 777

Vary: Accept-Encoding      出现这个提示表明已启用压缩

Cache-Control: max-age=31104000

Expires: Wed, 13 Sep 2017 09:32:39 GMT

Content-Type: text/html

把之前的配置内容注释掉

[root@Centos conf]# /application/apache/bin/apachectl -t

Syntax OK

[root@Centos conf]# /application/apache/bin/apachectl graceful   

[root@Centos conf]# ps -ef |grep http

root 14492 1  0 17:03 ?  00:00:00 /application/apache2.4.23/bin/httpd -k restart

daemon  14998  14492  0 17:39 ?  00:00:00 /application/apache2.4.23/bin/httpd -k restart

daemon 14999  14492  0 17:39 ?  00:00:00 /application/apache2.4.23/bin/httpd -k restart

daemon 15000  14492  0 17:39 ?00:00:00 /application/apache2.4.23/bin/httpd -k restart

root  15083 148  0 17:39 pts/0  00:00:00 grep http

[root@Centos conf]# lsof -i tcp:9999

COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME

httpd   14492   root    8u  IPv6  28964      0t0  TCP *:distinct (LISTEN)

httpd   14998 daemon    8u  IPv6  28964      0t0  TCP *:distinct (LISTEN)

httpd   14999 daemon    8u  IPv6  28964      0t0  TCP *:distinct (LISTEN)

httpd   15000 daemon    8u  IPv6  28964      0t0  TCP *:distinct (LISTEN)

[root@Centos conf]# curl -I http://blog.abc.com:9999/deflate.html

HTTP/1.1 200 OK

Date: Sun, 18 Sep 2016 09:40:08 GMT

Server: Apache/2.4.23 (Unix)

Last-Modified: Sun, 18 Sep 2016 08:10:40 GMT

ETag: "309-53cc3bb2de520"

Accept-Ranges: bytes

Content-Length: 777

Cache-Control: max-age=31104000

Expires: Wed, 13 Sep 2017 09:40:08 GMT

Content-Type: text/html

发现没有配置的时候是不会出现相关提示内容

提示：如果编译安装后，主配置文件中没有加入deflate此模块，那么我们可以手要增加一个这样的模块

LoadModule deflate_module modules/mod_deflate.so

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