如何進行Apache服務mod_deflate模塊分析

如何進行Apache服務mod_deflate模塊分析，很多新手對此不是很清楚，為了幫助大家解決這個難題，下面小編將為大家詳細講解，有這方面需求的人可以來學習下，希望你能有所收獲。

LAMP架構應用實戰—Apache服務

mod_deflate壓縮模塊

今天來介紹下比較常用的模塊mod_deflate壓縮模塊

一：mod_deflate模塊介紹

mod_deflate壓縮模塊提供了DEFLATE輸出過濾器，允許服務器將內容發送給客戶端之前進行壓縮，節省帶寬資源

二：mod_deflate模塊查看

直接編譯安裝查看如下

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

mod_deflate.c

以DSO方式編譯安裝查看如下

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

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

但是以上兩種方式不能同時安裝，否則會出現錯誤

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

 deflate_module (shared)

查看幫助

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

  --enable-deflate        Deflate transfer encoding support

編譯、或以DSO安裝方式安裝與前面的緩存模塊安裝相同，這里就不再介紹了

三：mod_deflate配置

配置前看下HTTP頭的信息

[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

備份并配置模塊

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

[root@Centos conf]# vi httpd.conf 

中間內容省略

<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

語法檢查與服務重啟

[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

測試配置內容

[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      出現這個提示表明已啟用壓縮

Cache-Control: max-age=31104000

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

Content-Type: text/html

把之前的配置內容注釋掉

[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

發現沒有配置的時候是不會出現相關提示內容

提示：如果編譯安裝后，主配置文件中沒有加入deflate此模塊，那么我們可以手要增加一個這樣的模塊

LoadModule deflate_module modules/mod_deflate.so

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