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如何利用 Apache 的 mod_pagespeed 快速強化原先網頁的效率

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會接觸到這個套件是因為 Google PageSpeed Insights 實在太嚴格了，在不更改程式碼架構下要做基本的優化，只好找尋較方便的方式。

mod_pagespeed這個Apache的套件，可將一些js, css檔案合併，並自動優化整個網頁讀取速度，不需要更改原來的code撰寫，即可優化一些Google PageSpeed Insights抓出的小毛病。（但真的能改善的還是有限～有總比沒有好～只要一分鐘就能搞定，有做有保佑～）

目前是以環境主機為 Ubuntu 16.04 為例

1. 套件下載
64-bit version
wget https://dl-ssl.google.com/dl/linux/direct/mod-pagespeed-stable_current_amd64.deb
32-bit version
wget https://dl-ssl.google.com/dl/linux/direct/mod-pagespeed-stable_current_i386.deb2. 

 2. 安裝套件
sudo dpkg -i mod-pagespeed-*.deb

 3. 移除套件安裝檔
rm mod-pagespeed-*.deb

 4. 重開Apache
service apache2 restart

5. 編輯設定檔 (如不更改可用預設值)
vim /etc/apache2/mods-available/pagespeed.conf

更多詳細的參數設定說明可參考以下文件：
https://www.digitalocean.com/community/tutorials/how-to-get-started-with-mod_pagespeed-with-apache-on-an-ubuntu-and-debian-cloud-server

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