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
