Problem with proxy cache misses

[Payam Chychi]

Look at your proxy cache path... (proxy_cache_path /var/www/test_cache)Are you sure the path exists and had proper perms/ownership?

Payam


On Feb 29, 2016, 11:03 AM -0800, CJ Ess<zxcvbn4038 at gmail.com>, wrote:
> Hello! I'm testing out a new configuration and there are two issues with the proxy cacheing feature I'm getting stuck on.
> 
> 1) Everything is a cache miss, and I'm not sure why:
> 
> My cache config (anonymized):
> 
> ...
> proxy_cache_path /var/www/test_cache levels=2:2 keys_zone=TEST:32m inactive=365d max_size=16g loader_files=256;
> ...
> upstream haproxy {
> server127.0.0.1:8080(http://127.0.0.1:8080);
> keepalive 256;
> }
> 
> ...
> location ~ "^/[W][A-Za-z0-9_-]{7,13}$" {
> limit_except GET {
> denyall;
> }
> proxy_http_version 1.1;
> proxy_set_header Connection "Close"; # Disable Keepalives
> proxy_set_header Host "www.testhost.com(http://www.testhost.com)"; # Upstream requires this value
> proxy_set_header X-Real-IP $remote_addr;
> proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> proxy_set_header X-Forwarded-Proto https;
> proxy_cache TEST;
> proxy_cache_key $uri;
> proxy_cache_valid 301 365d;
> proxy_cache_valid 302 1d;
> proxy_cache_lock on;
> proxy_buffering off;
> proxy_passhttp://haproxy;
> }
> 
> ...
> 
> A sample response coming back from the upstream (captured with wireshark)
> 
> HTTP/1.1 301 Moved Permanently
> Date: Mon, 29 Feb 2016 18:16:02 GMT
> Content-Type: text/html
> Transfer-Encoding: chunked
> Connection: close
> P3P: CP="some text"
> X-Frame-Options: deny
> Location:http://some.test.url/
> 
> 0
> 
> The cache directory is owned by the nginx user, perms 0700.
> 
> I'm expecting the 301 in the example above to be cached for a year, but nothing is created under /var/www/test_cache, and subsequent requests for the same resources are also cache misses.
> 
> 2) For each URL which doesn't match any of the location blocks, I am seeing an error in the log file:
> 
> 2016/02/29 13:55:20 [error] 19524#0: *1509121054(tel:1509121054)open() "/var/www/html/W4ud7y1k4jjbj" failed (2: No such file or directory), client: a.b.c.d, server:test.com(http://test.com), request: "HEAD /W4ud7y1k4jjbj HTTP/1.1", host: "test.com(http://test.com)"
> 
> There is a "root /var/www/html" defined in the http block, although there is only one specific location which uses it:
> 
> location = /apple-app-site-association {
> default_type application/pkcs7-mime;
> break;
> }
> 
> 
> And the final location block in my server config is:
> 
> location = / {
> rewrite ^https://www.someother.test.com/permanent;
> break;
> }
> 
> 
> So my expectation is that since the request matches none of the location blocks, nginx will just issue a 404 response. However from the error log, it looks like it is trying the root directory first before issuing the 404. Is there some way to prevent that?
> 
> 
> 
> 
> _______________________________________________
> nginx mailing list
> nginx at nginx.org
> http://mailman.nginx.org/mailman/listinfo/nginx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.nginx.org/pipermail/nginx/attachments/20160229/ed3b16dd/attachment.html>