Re: [squid-users] How to check whether a URL is cached or not?

Hua Su :
> Hi,
> Is there any way to check whether a URL is cached or not? Thanks!
>

Yes, to watch the http headers of a response.
For example, when request news.163.com we could get these headers:

(Status-Line) HTTP/1.0 200 OK
Age 31
Cache-Control max-age=70
Connection close
Content-Encoding gzip
Content-Type text/html; charset=GBK
Date Fri, 22 May 2009 12:29:21 GMT
Expires Fri, 22 May 2009 12:30:31 GMT
Last-Modified Fri, 22 May 2009 12:28:05 GMT
Server nginx/0.7.39
Vary Accept-Encoding
Via 172.16.80.162.nginx, 1.0 cache.163.com (squid/3.0.STABLE13)
X-Cache HIT from cache.163.com

The last line means this url get cached.

-- 
Jeff Pang
DingTong Technology
www.dtonenetworks.com