Hi,

I'm using nginx as a reverse proxy, but I can't get nginx to serve requests from its cache when the upstream server is refusing connections. I understood that "proxy_cache_use_stale error" should allow me to do this, but it doesn't seem to work for me. Have I perhaps misunderstood something?

My complete nginx.conf looks like this:

user www-data;
worker_processes 4;
pid /run/nginx.pid;

events {
worker_connections 768;
# multi_accept on;
}

http {
upstream localsvr {
server localhost:8080;
}

proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=one:8m max_size=5000m inactive=300m;
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
server {
keepalive_timeout 65;
types_hash_max_size 2048;
proxy_buffering on;

default_type application/octet-stream;

gzip on;
gzip_disable "msie6";
listen 80;
proxy_cache one;
proxy_cache_min_uses 100;
proxy_set_header Host $host;
location / {
proxy_pass http://localsvr;
proxy_cache_use_stale error;
proxy_next_upstream error;
proxy_redirect off;
}
}
}

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I've previously also posted this on stackoverflow, but didn't get any feedback there:

http://stackoverflow.com/questions/27371285/nginx-proxy-cache-use-stale-not-working-when-connection-refused