CentOS6 Nginx Enable Ngx_pagespeed accelerated site Access Tutorial

1. Functional characteristics of Pagespeed

The Pagespeed module can use a large number of rewrite "filters", each of which can be selectively turned on/off to automate a variety of optimizations (such as reducing document size, reducing HTTP request data, reducing HTTP round-trip times, and shortening DNS resolution time).

Below are some of the filters supported by Ngx_pagespeed. Please refer to the official documentation for all the filters supported.

Collapse whitespace (compressed blank): Reduce bandwidth usage by replacing multiple consecutive blanks in HTML pages with a blank space.
Canonicalize JavaScript libraries (normalized transform JavaScript Library): Reduces bandwidth usage by automatically swapping popular JavaScript libraries for free, hosted JavaScript libraries, such as hosted by Google.
Combine css (merge CSS): Reduce the number of HTTP requests by merging multiple CSS files into a single CSS file.
Combine JavaScript (merge JavaScript): Reduces the number of HTTP requests by merging multiple JavaScript files into a single JavaScript file.
Elide Attributes (omitted attribute): Reduces the size of the document by removing the label specified by the default property.
Extend cache (Extended caching): Reduce bandwidth usage by optimizing the caching of Web page resources.
Flatten CSS Imports (thin CSS Import): Reduces the number of HTTP request round-trip trips by removing @import from the CSS file.
Lazyload Images (Delay loading picture): Delay loading the invisible picture on the client browser.
Minify JavaScript (shrink JavaScript): Reduces the amount of bandwidth usage by reducing JavaScript.
Optimize Images (optimized picture): Optimize distribution by introducing more inline images, compressing pictures, or converting GIF images into PNG images.
Pre-resolve DNS (pre-resolved DNS): Reduces DNS resolution time by resolving DNS.
Prioritize Critical CSS (optimize load key CSS rules): Rewrite the CSS file so that the CSS rules for the rendered page are loaded first.

2, download decompression pagespeed module
Scientific Linux 6 provides gcc-4.8 packages that work on CentOS 6.
sudo rpm--import Https://linux.web.cern.ch/linux/scientific6/docs/repository/cern/slc6X/i386/RPM-GPG-KEY-cern
sudo wget-o/etc/yum.repos.d/slc6-devtoolset.repo https://linux.web.cern.ch/linux/scientific6/docs/repository/ Cern/devtoolset/slc6-devtoolset.repo
sudo yum install devtoolset-2-gcc-c++ devtoolset-2-binutils

cd/usr/local/src/
wget Https://github.com/pagespeed/ngx_pagespeed/archive/release-1.11.33.3-beta.zip
Unzip-q Release-1.11.33.3-beta.zip
wget https://dl.google.com/dl/page-speed/psol/1.11.33.3.tar.gz
Tar xzf 1.11.33.3.tar.gz-c Ngx_pagespeed-release-1.11.33.3-beta #解压出来的psol文件夹到上面ngx_ Within the Pagespeed-release-1.11.33.3-beta folder

3, then to the Nginx source directory, add the following code to recompile Nginx
./configure--prefix=/usr/local/nginx--user=www--group=www\
-- Add-module=/root/ngx_http_google_filter_module \
--add-module=/root/ngx_http_substitutions_filter_module \
--add-module=/root/ngx_pagespeed-release-1.11.33.3-beta \
--with-cc=/opt/rh/devtoolset-2/root/usr/bin/ GCC \
--with-openssl=/root/openssl \
--with-pcre=/root/pcre \
--with-zlib=/root/zlib \
--with-http_ Stub_status_module \
--with-http_secure_link_module \
--with-http_v2_module \
--with-http_ssl_module \
--with-ipv6 \
--with-http_gzip_static_module \
--with-http_realip_module \
--with-http_flv_module \
--with-http_mp4_module \
--with-http_sub_module \
--with-stream \
--with-stream_ssl_module
make// You do not need to install make install
/etc/init.d/nginx stop
CD objs/
CP nginx/usr/local/nginx/sbin//overwrite original file
/etc/init.d/ng Inx start

4, configure the Ngx_pagespeed module in Nginx
Pagespeed filters, there are two different levels you can choose from: Corefilters and Passthrough. Unless specified, corefilters is used by default.
Using Corefilters

server {
# Ports listening on
Listen 80;
# server Name
server_name www.zhangfangzhou.cn;
# Write down the root directory
root/usr/local/nginx/html;
# Access Log
Access_log/var/log/nginx/access.log main;
# Enable Ngx_pagespeed
Pagespeed on;
Pagespeed Filecachepath/var/ngx_pagespeed_cache;
# Enable Corefilters
Pagespeed Rewritelevel corefilters;
# Disable some filters in the Corefilters
Pagespeed disablefilters rewrite_images;
# Selectively enable additional filters
Pagespeed enablefilters Collapse_whitespace;
Pagespeed enablefilters lazyload_images;
Pagespeed enablefilters Insert_dns_prefetch;
}

For advanced users: Using Passthrough

server {
# Ports listening on
Listen 80;
# server Name
server_name www.zhangfangzhou.cn;
# Write down the root directory
root/usr/local/nginx/html;
# Access Log
Access_log/var/log/nginx/access.log main;
# Enable Ngx_pagespeed
Pagespeed on;
Pagespeed Filecachepath/var/ngx_pagespeed_cache;
# Disable Corefilters
Pagespeed Rewritelevel passthrough;
# Enable compressed blank filter
Pagespeed enablefilters Collapse_whitespace;
# Enable JavaScript Library Uninstall
Pagespeed enablefilters canonicalize_javascript_libraries;
# Combine multiple CSS files into a single CSS file
Pagespeed enablefilters combine_css;
# merge multiple JavaScript files into a JavaScript file
Pagespeed enablefilters Combine_javascript;
# Delete labels with default attributes
Pagespeed enablefilters elide_attributes;
# Improve the caching of resources
Pagespeed enablefilters Extend_cache;
# Replace the @import of the imported file, simplify the CSS file
Pagespeed enablefilters Flatten_css_imports;
Pagespeed cssflattenmaxbytes 5120;
# Delay Loading client unseen picture
Pagespeed enablefilters lazyload_images;
# Enable JavaScript shrink mechanism
Pagespeed enablefilters Rewrite_javascript;
# Enable picture optimization mechanism
Pagespeed enablefilters rewrite_images;
# Pre-resolved DNS query
Pagespeed enablefilters Insert_dns_prefetch;
# rewrite CSS, first load the CSS rules for rendering page
Pagespeed enablefilters prioritize_critical_css;
}

5, set up the cache folder and give Nginx user rights

sudo mkdir/var/ngx_pagespeed_cache
sudo chown Www:www/var/ngx_pagespeed_cache