Nginx does not Cache Google Adsense and Some other widgets - help

[Alex]

Dear RR:

The application uses tomcat. It is a java 2EE cms called dotCMS.  Here  
are the headers without NGINX:

HTTP request sent, awaiting response...
   HTTP/1.1 200 OK
   Date: Wed, 05 Oct 2011 17:53:05 GMT
   Server: Apache/2.0.63 (Unix) mod_ssl/2.0.63 OpenSSL/0.9.8e-fips- 
rhel5 mod_bwlimited/1.4 mod_jk/1.2.31
   Set-Cookie: JSESSIONID=0B54F628C20BD330D58B871703A27128; Path=/
   Expires: Thu, 04 Oct 2012 17:53:05 +0000
   Cache-Control: public, max-age=31536000
   Last-Modified: Wed, 05 Oct 2011 13:38:53 GMT
   ETag: dot:null:1317821933000:64442
   Content-Length: 64442
   Keep-Alive: timeout=15, max=100
   Connection: Keep-Alive
   Content-Type: image/png
Length: 64442 (63K) [image/png]


My config file is here http://pastebin.com/Ubi0pjyq



Yes, the CACHE is created.  This is what I see in the cache directory.

0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    tmp

I appreciate your help!


Alex
On Oct 5, 2011, at 11:14 AM, Reinis Rozitis wrote:

>> --2011-10-05 18:09:32--  http://myWebDomain.com/contentAsset/resize-image/7e061df4-0fc3-481f-b75d-7ce3ff2e8cac/?w=175
>> HTTP/1.1 404 Not Found
>> Server: nginx
>>  Content-Type: text/html;charset=UTF-8
>>  Vary: Accept-Encoding
>>  Set-Cookie: JSESSIONID=5AB2FF5CF72E237DCEC48FAE19AE09F4; Path=/
>>  Set-Cookie: SHARED_SESSION_ID=GZ3W4CP2F07E; Expires=Thu, 06-  
>> Oct-2011 14:09:32 GMT; Path=/
>> 2011-10-05 18:09:32 ERROR 404: Not Found.
>
>
> Without the full nginx config (and the application specifics (looks  
> like some java app/tomcat?) you are trying to proxy/cache) it is  
> hard to understand what is going wrong.
>
> While you are getting a 404 response nginx cache should not  
> influence if the object exists or not on the backend (unless the  
> backend is using something dynamic (like active sessionid/cookie)  
> for the embedded object/image serving).
>
> Is it possible to get the request/headers for the object directly  
> from the backend (without nginx)?
>
>
> Also can you show the proxy_cache_path for STATIC zone and/or check  
> if nginx actually creates any cache file there?
>
> In the end you could also enable/check the nginx error_log in more  
> verbose mode.
>
>
> But if it was intended to cache the 404 responses it is clear why  
> nginx didn't it before since proxy_cache_valid didn't have 404  
> specified.
>
> rr
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