proxy_cache_path /tmp/nginx_cache levels=1:2 keys_zone=cache:30m max_size=250m;
proxy_temp_path /tmp/nginx_proxy 1 2;

server {
    listen 80;
    server_name _;
    client_max_body_size 100M;
    # Proxy parameters
    proxy_http_version 1.1;
    proxy_set_header Connection "";
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-Host $remote_addr;
    proxy_set_header X-Forwarded-Server $host;
    proxy_set_header nginx-request-uri $request_uri;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_buffering on;
    proxy_buffer_size 128k;
    proxy_buffers 4 128k;
    proxy_busy_buffers_size 256k;
    proxy_temp_file_write_size 128k;
    proxy_redirect off;
    proxy_connect_timeout 30s;
    proxy_read_timeout 480s;
    proxy_send_timeout 120s;

    location / {
        add_header 'Access-Control-Allow-Origin' '$http_origin';
        if ($request_method = OPTIONS ) {
            return 204;
        }
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Mx-ReqToken,X-Requested-With,Accept-Language,X-CustomHeader,Content-Range,Range,Observe';
        add_header 'Access-Control-Expose-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Mx-ReqToken,X-Requested-With,Accept-Language,X-CustomHeader,Content-Range,Range,Observe';
        proxy_pass http://127.0.0.1:8080/;
        proxy_set_header X-Url-Scheme $scheme;
        proxy_cache cache;
        proxy_cache_bypass $cookie_auth_tkt;
        proxy_no_cache $cookie_auth_tkt;
        proxy_cache_valid 30m;
        proxy_cache_key $host$scheme$proxy_host$request_uri;
        # In emergency comment out line to force caching
        # proxy_ignore_headers X-Accel-Expires Expires Cache-Control;
    }
}