# configuration file /etc/nginx/conf.d/10-phpbb-cache.conf:fastcgi_cache_path /var/cache/nginx/phpbb levels=1:2 keys_zone=phpbb_cache:20m                     max_size=1g inactive=60m use_temp_path=off;# phpBB sets two cookies by default:# phpbb3_<hash>_sid → session ID (exists for all visitors, even guests)# phpbb3_<hash>_u → user ID (1 for guests, other values for logged-in users)# nginx regex engine doesn’t handle negative lookahead (?!1) reliably inside if condition# extract numeric user id from phpbb cookie; default to 1 (guest)map $http_cookie $phpbb_user_id {    default 1;    ~*phpbb3_[a-z0-9]+_u=([0-9]+) $1;}# convert that to a boolean: 0 = guest (u=1), 1 = logged in (u != 1)map $phpbb_user_id $is_logged_in {    1      0;    default 1;}# server {} part  location / {        try_files $uri $uri/ @rewriteapp;      # Pass the php scripts to FastCGI server specified in upstream declaration.      location ~ \.php(/|$) {        include /etc/nginx/msportal/msportal_php_args;        try_files $uri $uri/ /app.php$is_args$args;      }      # Deny access to internal phpbb files.      location ~ /(config\.php|common\.php|cache|files|images/avatars/upload|includes|(?<!ext/)phpbb(?!\w+)|store|vendor) {        deny all;      }  }  location @rewriteapp {     rewrite ^(.*)$ /app.php/$1 last;  }  # Correctly pass scripts for installer  #location /install/ {  #   try_files $uri $uri/ @rewrite_installapp =404;  #   # Pass the php scripts to fastcgi server specified in upstream declaration.  #   location ~ \.php(/|$) {  #      include /etc/nginx/msportal/msportal_php_args;  #     try_files $uri $uri/ /install/app.php$is_args$args =404;  #   }  #}  location @rewrite_installapp {     rewrite ^(.*)$ /install/app.php/$1 last;  }  # Deny access to version control system directories.  location ~ /\.svn|/\.git {        deny all;  }  location ~* \.(?:css|js|jpe?g|png|gif|ico|woff2?|ttf|svg)$ {      expires   30d;  }  # apc und maintenance  location /_vacation-site {        auth_basic           "AdminOnly";        auth_basic_user_file /etc/nginx/htpasswd_msportal;        location ~ \.php$ {                fastcgi_param PHP_VALUE "upload_tmp_dir=/home/www/web1/tmp; session.save_path=/home/www/web1/tmp; open_basedir=/home/www/web1/html:/home/www/web1/tmp:/home/www/web1/files:/usr/share/php:/var/www; include_path=.:/var/www:/usr/share/php";                include /etc/nginx/msportal/php;        }  }}#fcgi settingsset $skip_cache 0;if ($request_method = POST) { set $skip_cache 1; }# if this line is active cache is always bypass#if ($query_string != "") { set $skip_cache 1; }# Skip cache for logged-in users (u != 1)# -- skip if logged in (uses map above) --if ($is_logged_in = 1) {    set $skip_cache 1;}if ($request_uri ~* "^/(adm|ucp)") { set $skip_cache 1; }  # optional: skip admin/user panelfastcgi_cache_key "$scheme$request_method$host$request_uri";fastcgi_cache phpbb_cache;fastcgi_cache_valid 200 301 302 30m;fastcgi_cache_use_stale error timeout invalid_header updating;fastcgi_cache_bypass $skip_cache;fastcgi_no_cache $skip_cache;add_header X-FastCGI-Cache $upstream_cache_status;