Further adding the observations with the following scenario:
1. Visit URL A-not-loggedin
2. Visit URL B-not-loggedin
3. User logs in
4. Visit URL A after logging in - varnish is serving the page -
A-not-loggedin
5. Visit URL B after logging in - varnish is serving the page
B-not-loggedin
This means Varnish is serving the pages just visited (till cache expiry)
irrespective of the fact that the page is being fetched from backend and
that there is a pass in vcl_recv.
I am unable to understand the above mentioned behavior - the VCL logic I
used is simple as mentioned in the mail below.
Regards,
Pinakee
On 26/05/16 6:24 pm, Pinakee BIswas wrote:
Hi,
I am facing a strange problem with Varnish cache. Ours is an ecommerce
site wherein users can visit with or without logging in. I have
written the VCL to unset cookies when user not logged in.
The scenario is user logs in and then logs out. When the user logs
out, Varnish is still delivering logged in pages to the user which is
strange as the requests for logged in users go all the way to the
backend and the pages are not supposed to get cached. I have been
looking into this since quite some time and still not able to figure
out the reason.
Would appreciate any help.
Thanks,
Pinakee
PFA the output from varnishlog.
Following is the VCL code:
sub vcl_recv {
# Happens before we check if we have this in cache already.
#
# Typically you clean up the request here, removing cookies you
don't need,
# rewriting the request, etc.
set req.backend_hint = uwsgi;
if (req.method == "GET") {
if ((req.http.Cookie !~ "sessionid=") &&
(req.http.Cookie !~ "loggedin_user=") &&
(req.url !~ "^/esi")) {
unset req.http.cookie; # strip the cookies - we don't
need them
}
}
}
sub vcl_backend_response {
# Happens after we have read the response headers from the backend.
#
# Here you clean the response headers, removing silly Set-Cookie
headers
# and other mistakes your backend does.
if (bereq.method == "GET") {
set beresp.do_esi = true;
if ((beresp.http.Set-Cookie !~ "jivaana_user=") &&
(beresp.http.Set-Cookie !~ "sessionid=") &&
(bereq.http.Cookie !~ "sessionid=") &&
(bereq.http.Cookie !~ "jivaana_user=") &&
(bereq.url !~ "^/product/addtobasket")) {
#unset beresp.http.Set-Cookie;
set beresp.uncacheable = false;
return(deliver);
}
}
}
_______________________________________________
varnish-misc mailing list
[email protected]
https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
