NGINX Server block with FastCGI Purge

fastcgi_cache_path /etc/nginx/cache/abc levels=1:2 keys_zone=ABC:100m inactive=60m;
add_header X-Cache $upstream_cache_status;

server {
	listen   80; ## listen for ipv4; this line is default and implied

	root /var/www/abc/public_html;
	index index.php index.html index.htm;

	server_name abc.com www.abc.com;

	location / {
		try_files $uri $uri/ /index.php?q=$uri&$args;


	# FastCGI Rules
	set $no_cache 0;
    	if ($request_method = POST) {
        set $no_cache 1;
   	}

	if ($query_string != "") {
        set $no_cache 1;
   	}

	if ($request_uri ~* "(/admin.php|/admin/|/adminitrator|/login.php|/wp-admin/|/xmlrpc.php|/wp-(app|cron|login|register|mail).php|wp-.*.php|/feed/|index.php|wp-comments-popup.php|wp-links-opml.php|wp-locations.php|sitemap(_index)?.xml|[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {
        set $no_cache 1;
  	}

	if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in") {
        set $no_cache 1;
   	}

	#Don't cache if there is a cookie called PHPSESSID
	if ($http_cookie = "PHPSESSID")
	{
    	set $no_cache 1;
	}

	}

	location /doc/ {
		alias /usr/share/doc/;
		autoindex on;
		allow 127.0.0.1;
		deny all;
	}

	error_page 404 /404.html;
	error_page 500 502 503 504 /50x.html;
	location = /50x.html {
		root /usr/share/nginx/www;
	}

	location ~ \.php$ {
		try_files $uri =404;
		fastcgi_pass unix:/var/run/php5-fpm.sock;
		fastcgi_index index.php;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		include fastcgi_params;
		fastcgi_cache ABC;
		fastcgi_cache_valid 200 60m;
		fastcgi_cache_bypass $no_cache;
		fastcgi_no_cache $no_cache;
		fastcgi_cache_key "$scheme$request_method$host$request_uri";
		fastcgi_cache_use_stale error timeout invalid_header http_500;

	}


	# Purge settings
	location ~ /purge(/.*) {
	    fastcgi_cache_purge ABC "$scheme$request_method$host$1";
	}

	location ~* ^.+\.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
		access_log off;	log_not_found off; expires max;
	}

	location = /robots.txt { access_log off; log_not_found off; }
	location ~ /\. { deny  all; access_log off; log_not_found off; }


	#Header Expiry
	location ~* \.(jpg|jpeg|gif|png|css|js|ico|xml)$ {
    	access_log        off;
    	log_not_found     off;
    	expires           360d;
	}

}