Nginx Cache and WP canonical URL create infinite loop (bug ?)
Simone Fumagalli
simone.fumagalli at contactlab.com
Wed Nov 23 17:11:41 UTC 2011
> Could you please show your config?
Nothing special, here we go (only important parts)
server {
server_name www.mysite.com
listen 1.2.3.4:80
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_store_access user:rw group:rw all:r;
location / {
# If logged in, don't cache.
if ($http_cookie ~* "comment_author_|wordpress_(?!test_cookie)|wp-postpass_" ) {
set $do_not_cache 1;
}
# Response in not cached
proxy_no_cache $do_not_cache;
# Response is not taken from the cache
proxy_cache_bypass $do_not_cache;
proxy_cache MY_CACHE;
proxy_pass http://ALL_backend;
}
location ~ /purge(/.*) {
proxy_cache_purge MY_CACHE "$scheme://$host$1$is_args$args";
}
}
> By default nginx will use the same uri in cache as it will use in request to upstream, and this shouldn't happen
AFAIK when I require http://www.mysite.com/my-page// the key for the cache is set to http://www.mysite.com/my-page/
Ciao
--
Simone
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