Noted That:

• To install correctly this nginx-proxy-cache-integrator.zip .
• Fisrt Download the nginx-proxy-cache-integrator.zip to your computer
• Extract/Open nginx-proxy-cache-integrator.zip to Your Computer.
• Then, Find readme.txt file inside nginx-proxy-cache-integrator.zip and Open readme.txt .
• Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
• Then, Follow the Tips Below.

Start the Tips:

1. First Download " nginx-proxy-cache-integrator.zip " Plugin to your Local Computer. (Click Download)

2. Then, Login to your " yourdomain.com/wp-admin " Dashboard.

3. Then, Click on " Plugins " + " Add New " from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse " nginx-proxy-cache-integrator.zip "  Downloaded plugin from your computer, Where you downloaded nginx-proxy-cache-integrator.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " WordPress Nginx proxy cache integrator " folder is added on left sidemenu. Now, Click on " WordPress Nginx proxy cache integrator " folder.

   Noted that: If you do not see " WordPress Nginx proxy cache integrator " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  WordPress Nginx proxy cache integrator Configurtions and Settings or How to work " WordPress Nginx proxy cache integrator " in your WordPress site.

After Activated Plugin According to Step-6 then,

1. Go to " Plugins " + " Installed Plugin " from Wordpress Admin Panel Leftside Menu.
2. or Direct go to: https://yourdomain/wp-admin/plugins.php
3. Then, Find " WordPress Nginx proxy cache integrator " Activated Plugin from Plugin List.
4. Then, Click on " Settings " from Plugin that is WordPress Nginx proxy cache integrator
5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,

It is harmless to install and activate this plugin before you’ve got the nginx proxy set up. To install:

1. Upload this plugin to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Install the latest stable nginx – currently 0.7.64. The 0.8 branch should work fine, too. Set it up as a frontend proxy.
4. Reconfigure your apache server to act as a backend proxy.

Sample nginx configuration

# The main config file, probably /etc/nginx/nginx.conf
user nginx;
worker_processes 4;
error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;
events { #A maximum of 1024 concurrent connections. worker_connections 1024;
}
http { server_tokens off; include /etc/nginx/mime.types; default_type application/octet-stream; access_log /var/log/nginx/access.log; client_body_temp_path /var/lib/nginx/body 1 2; gzip_buffers 32 8k; sendfile on; keepalive_timeout 65; tcp_nodelay on; #gzipping lets you serve more requests quicker. gzip on; gzip_types text/html application/javascript text/javascript text/css text/xml application/atom+xml application/xml; include /etc/nginx/sites-enabled/*;
}
# And then in the file /etc/nginx/sites-enabled/default
# This file shows you a few ways you can tweak your caching policies by inspecting URLs.
# The most important rule is to leave admin-looking URLs uncached, otherwise you won't be able to log in.
# From there, please feel free to set longer or shorter cache times based on your particular traffic.
# set some parameters: two levels deep for the filesystem
# set the name of the cache to "staticfilecache", giving it a maximum cache time of 3 hours and 500meg in size.
proxy_cache_path /var/lib/nginx/cache levels=1:2 keys_zone=staticfilecache:180m max_size=500m;
proxy_temp_path /var/lib/nginx/proxy;
proxy_connect_timeout 30;
proxy_read_timeout 120;
proxy_send_timeout 120;
#IMPORTANT - this sets the basic cache key that's used in the static file cache.
proxy_cache_key "$scheme://$host$request_uri";
upstream wordpressapache { #The upstream apache server. You can have many of these and weight them accordingly, #allowing nginx to function as a caching load balancer (oh my. Awesomeness abounds.) server 127.0.0.1:8200 weight=1 fail_timeout=120s;
}
server { #Only cache 200 responses, and for a default of 20 minutes. proxy_cache_valid 200 20m; #Listen to your public IP listen 111.11.111.111:80; #Probably not needed, as the proxy will pass back the host in "proxy_set_header" server_name blog.example.org; # "combined" matches apache's concept of "combined". Neat. access_log /var/log/apache2/nginx-access.log combined; # Set the real IP. proxy_set_header X-Real-IP $remote_addr; # Set the hostname proxy_set_header Host $host; #Set the forwarded-for header. proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; location / { # If logged in, don't cache. if ($http_cookie ~* "comment_author_|wordpress_(?!test_cookie)|wp-postpass_" ) { set $do_not_cache 1; } proxy_cache_key "$scheme://$host$request_uri $do_not_cache"; proxy_cache staticfilecache; proxy_pass http://wordpressapache; } location ~* wp\-.*\.php|wp\-admin { # Don't static file cache admin-looking things. proxy_pass http://wordpressapache; } location ~* \.(jpg|png|gif|jpeg|css|js|mp3|wav|swf|mov|doc|pdf|xls|ppt|docx|pptx|xlsx)$ { # Cache static-looking files for 120 minutes, setting a 10 day expiry time in the HTTP header, # whether logged in or not (may be too heavy-handed). proxy_cache_valid 200 120m; expires 864000; proxy_pass http://wordpressapache; proxy_cache staticfilecache; } location ~* \/[^\/]+\/(feed|\.xml)\/? { # Cache RSS looking feeds for 45 minutes unless logged in. if ($http_cookie ~* "comment_author_|wordpress_(?!test_cookie)|wp-postpass_" ) { set $do_not_cache 1; } proxy_cache_key "$scheme://$host$request_uri $do_not_cache"; proxy_cache_valid 200 45m; proxy_cache staticfilecache; proxy_pass http://wordpressapache; } location = /50x.html { root /var/www/nginx-default; } # No access to .htaccess files. location ~ /\.ht { deny all; }
}

And a sample apache configuration

########## Backend Apache
# This apache only listens on localhost to port 8200.
# It also has php and mod_rpaf installed. It does not gzip/deflate or access.log. It *Does* error log.
# Basically, your backend apache is fairly normal. You should disable keepalive too by setting
# Keepalive Off
# in your main config.
# mod_rpaf allows your backend apache to see the real IP address of the request, instead of the address of
# your frontend proxy.
 ServerName blog.example.org RewriteEngine on DocumentRoot /home/wp/wordpress/ ServerAdmin [email protected] #block POSTS without referrers. RewriteCond %{REQUEST_METHOD} POST RewriteCond %{REQUEST_URI} .wp-comments-post\.php* RewriteCond %{HTTP_REFERER} !.*blog.example.org.* [OR] RewriteCond %{HTTP_USER_AGENT} ^$ RewriteRule (.*) - [R=403,L]

It’s less intimidating than it looks.