Solved: zero hit for caching on content engine, why?

huangedmc · ‎03-25-2007

"show statistics http savings" reveals there's zero (0) hit for web requests.

"show statistics http miss-reason"

indicates most of them was due to "none_get_method".

Now, what does that mean, and how can I increase the hits?

We're using the exact same rules as all the other sites (which have hits), except we're redirecting traffic on the ingress interface instead of egress:

int g0/0.1

ip wccp web-cache redirect in

Any ideas please share.

thanks.

joquesada · ‎03-25-2007

Hi,

There are many reasons why a CE is not caching content, I'll try to list some of the things you may check:

- Make sure that the router is indeed redirecting traffic to the CE, use this command on the router: sh ip wccp web-cache detail. Make sure that the redirect line is constantly increasing.

- Make sure that the CE has a CFS partition configured, use this output on the CE to check: sh disk details. Look for the CFS partition and make sure it has some space allocated. If you need to partition the disk, use this command: 'disk config sysfs 5% cfs 50% mediafs 30% cdnfs remaining'.

- Add this command to the CE: http cache-cookies. This would greatly increase the amount of content that would be cached by the CE.

- Another thing that needs to be considered is the web site you are going to. Remember that dynamic content would not be cached by the CE.

Check these points and if you continue having issues, add a sh tech from the CE for review and a tcpdump taken at the CE using this command: '#tcpdump -s 1500 -w dump.cap'. Get the file 'dump.cap' off the CE.

Let me know how it goes. Thanks!

Regards,

Jose Quesada.

View solution in original post

joquesada · ‎03-25-2007

Hi,