asaddotcom wrote:
My Question is that how to replace small objects which are stored in squid cache... i.e I have open my web site under squid and it will save all objects to his own cache. Furtherly i need to change any of picture in my web site and i do change one of small JPG file from my web site. Now when i have open again my web site... there i look old one picture
Let me to tell you some facts first.
Squid is not such non-efficenit proxy with which you have to purge expired contents manually. It have its own mechanism to purge expired contents.
The situation you are facing is either due to your miss-configuration of squid or with same silly stuff with your ISP.
Several administartors of Pakistani ISP's configure their squids to cached dynamic contents and to "convert client no-cache or "reload'' requests into If-Modified-Since requests" which is violation of laws infact.
See reload_into_ims tag
http://squid.visolve.com/squid/squid24s ... d_into_ims for more info.
So I suggest you to check your ISP first, might this problem is occuring from you ISP's cache. (browse without your own proxy to check this issue).
Now back to your question, How can I purge an object from my cache?
Squid does not allow you to purge objects unless it is configured with access controls in squid.conf. First you must add something like
acl PURGE method purge
acl localhost src 127.0.0.1
http_access allow purge localhost
http_access deny purge
The above only allows purge requests which come from the local host and denies all other purge requests.
To purge an object, you can use the client program:
squidclient -m PURGE http://www.cnn.com/
If the purge was successful, you will see a ``200 OK'' response:
HTTP/1.0 200 OK
Date: Thu, 17 Jul 2005 16:03:32 GMT
Server: Squid/2.4.1
If the object was not found in the cache, you will see a ``404 Not Found'' response:
HTTP/1.0 404 Not Found
Date: Thu, 17 Jul 2005 16:03:22 GMT
Server: Squid/2.4.1
I hope this will help you.
regards
Hamid Ashraf
compucated(at)msn(dot)com
