Implement reverse Proxy in Nginx

2 Uses of Nginx

Web server for static content;

Reverse proxy server;

The characteristics of Nginx as reverse proxy

The receiving user request is asynchronous, that is, the user requests are all received, and then the back-end Web server is sent once, which greatly reduces the pressure of the back-end Web server;

No long connection between the Nginx agent and the back-end Web server;

When sending a response message, the side receives data from the backend Web server and sends it to the client;

The modules involved

Proxy: Standard HTTP module, implement reverse proxy function

Upstream: Standard HTTP module, load balancing function for back-end Web server scheduling;

FastCGI: Standard HTTP module, the PHP dynamic request agent to the back-end PHP server;

Configuring deployment

description : In this article, Nginx is responsible for static access processing, dynamic access will be proxy to the back-end PHP server;

# vi/etc/nginx/nginx.html Worker_processes 2;
Pid/var/run/nginx.pid;
    Events {worker_connections 1024;} http {include mime.types;
    Default_type Application/octet-stream; Log_format Main ' $remote _addr-$remote _user [$time _local] "$request" "$status $body _bytes_sent
    "$http _referer" "$http _user_agent" "$http _x_forwarded_for";
    Sendfile on;
    Keepalive_timeout 65;
    Upstream backend {server 172.16.25.112:9000;
        } server {Listen 80;
        server_name xxrenzhe.lnmmp.com;
        Access_log/var/log/nginx/lnmmp.access.log;
        Error_log/var/log/nginx/lnmmp.errors.log notice;
        root/www/lnmmp.com;
            Location/{try_files $uri @missing; # access the local static resource first, if it fails, go to the missing processing block;} location @missing { Rewrite ^ (. *[^/]) $ $1/permanent; # when accessing a domain name or IP address directly, add a trailing end to it and return to the rewrite ^/index.phpLast # will always inaccessible resources (such as 404 errors), all redirected to the home page} # prohibits system directory access, but allows the specified type of static file access to location ~* ^/system/.+\.
            (Jpg|jpeg|png|gif|css|js|swf|flv|ico) $ {expires Max;
            Tcp_nodelay off;
        Tcp_nopush on;
        # When accessing/system/, you can jump back directly to the page location ~/system/{rewrite ^/index.php last;
            } location ~* \.php$ {Default_type text/html;
            CharSet Utf-8;
            Fastcgi_pass backend;
            Fastcgi_index index.php;
            Fastcgi_param script_filename $document _root$fastcgi_script_name;
        Include Fastcgi_params; }
    }
}