Keys with trailing slashes are not being deleted

[doliver3]

Hi,

Keys with trailing slashes are not being deleted.

I've compiled with the latest nginx and this codebase as of 2 days ago. Our wordpress site always redirects the user to the version of the url with a trailing slash so the real content is stored in in the key that has been cached that contains the trailing slash.

http://domain1.com/purge/about
is redirected to:
http://domain1.com/purge/about/

Both are fastcgi cached, and I can see their keys show up in the cache. I've been trying to use the nginx helper plugin which recommends using this nginx add-in to do the deletes but I haven't been able to get this plugin to work to purge when there is a trailing slash.

location ~ /purge(/.*) {
fastcgi_cache_purge DOMAIN1.COM $scheme$request_method$host$1;
}

This untranslated key works and deletes the real cache key:
httpGETdomain1.com/about

This untranslated key fails to delete the real cache key. It returns a 404 error:
httpGETdomain1.com/about/

From the purge url perspective...
This deletes the key and works:
http://domain1.com/purge/about

This does not delete the key and fails with a 404. I can see the key in the cache and it remains after running this url.
http://domain1.com/purge/about/

I verified the value of the purge url untranslated keys, and they are as expected and the one with a trailing slash prints out a trailing slash.
location ~ /purge(/.*) {
return 200 "untranslated key is $scheme$request_method$host$1";
add_header Content-Type text/plain;
#fastcgi_cache_purge DOMAIN1.NET "$scheme$request_method$host$1";
}

[pkirk]

How do you fixed it?
https://xkcd.com/979/

[kigajewex]

nginx config

proxy_cache_path /var/nginx_cache levels=1:2 keys_zone=my_cache:20m max_size=200m inactive=2h;
proxy_cache_key $uri;
location ~ /ABEhgTGZzfer3VIdcG8jJX2CJSeRcQGk(/.*) {
	testcookie off;
	allow all;
	proxy_cache_purge my_cache $1;
	error_page 404 /manual_purge.php;
}
location /manual_purge.php {
	internal;
	include snippets/fastcgi-php.conf;
	fastcgi_pass 127.0.0.1:9000;
}

manual_purge.php

<?php
$uri = str_replace('/ABEhgTGZzfer3VIdcG8jJX2CJSeRcQGk', '', $_SERVER['REQUEST_URI']);
$md5 = md5($uri);
$l1 = substr($md5, -1);
$l2 = trim(substr($md5, -3), $l1);
@unlink("/var/nginx_cache/$l1/$l2/$md5");
echo "Successful purge\n";
echo "Key: $uri\n";
echo "Path: /var/nginx_cache/$l1/$l2/$md5";