nginx cached forward proxy #example

nginx.conf

user www-data;
worker_processes 1;
pid /var/run/nginx.pid;

events {
    worker_connections 2048;
    multi_accept on;
    use epoll;
}

http {

    ##
    # Basic Settings
    ##

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    ##
    # Proxy
    ##

    proxy_buffering           on;
    proxy_cache_path          /var/cache/proxy-nginx levels=1:2 keys_zone=proxy-cache:10m max_size=3g inactive=1d;
    proxy_temp_path           /var/cache/proxy-nginx/tmp;
    proxy_buffer_size         4k;
    proxy_buffers             256 4k;

    # server_names_hash_bucket_size 64;
    # server_name_in_redirect off;

    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    ##
    # Logging Settings
    ##


    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';
            log_format cache_status '[$time_local] "$request" $upstream_cache_status';

    access_log /var/log/nginx/access.log  main;
    error_log  /var/log/nginx/error.log;
    access_log /var/log/nginx/cache_access.log  cache_status;

    ##
    # Gzip Settings
    ##

    gzip on;
    gzip_disable "msie6";

    # gzip_vary on;
    gzip_proxied any;
    # gzip_comp_level 6;
    # gzip_buffers 16 8k;
    # gzip_http_version 1.1;
    # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;


    ##
    # Virtual Host Configs
    ##

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}

proxy

server {
    resolver 8.8.8.8;
    listen  [::]:8080;

    location / {
        expires max;
        proxy_cache proxy-cache;
        proxy_cache_valid 200 302 301 1h;
        proxy_cache_valid any 1m;

        proxy_cache_key         "$scheme://$host$request_uri";
        proxy_pass              $scheme://$host$request_uri;
        proxy_set_header        Host $http_host;
        proxy_set_header        X-Real-IP       $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_ignore_headers "Set-Cookie";
    }
}