I see. Thanks you all. On Fri, May 22, 2009 at 8:33 PM, Jeff Pang <pangj@xxxxxxxx> wrote: > 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 >
