gistfile1.txt

**** UPDATE
Adding this, to the simple.vcl config enabled caching in the app #2.

sub vcl_fetch {
  unset obj.http.set-cookie; 
  unset obj.http.expires;
  set obj.ttl = 1m;
  deliver;
}
**********************************************************************


######################################################################
# TOC
# SETUP
#  * how im starting varnish
#  * simple.vcl config file
# DESCRIPTION OF PROBLEM
#  * cant get it to cache with one app but can with another with the same config settings...
# QUESTIONS
######################################################################

######################################################################
# how im starting varnish
######################################################################
root@walle /opt/local/etc/varnish $ varnishd -a localhost:6081 -T localhost:6082 -F -f simple.vcl

######################################################################
# simple.vcl config file
######################################################################
backend default {
    .host = "127.0.0.1";
    .port = "4567";
#    .port = "3000";
}

sub vcl_recv {
#  C{
#   printf("Hello");
#  }C

  unset req.http.cookie;
}
              
sub vcl_fetch {
  unset obj.http.expires;
  set obj.ttl = 1m; 
}


######################################################################
# description of problem
######################################################################
I set up a very simple app to test varnish and its caching with the simple app, its 
a small sinatra app... It appears to be caching just fine.  Using the config above with with 
port 4567 for the backend.

Heres the requests Im issuing and the varnishlog:
https://gist.github.com/915456f2b48e05cf4830 app #1

Im trying to test a rails app.  But cant get it to cache.  Same config as above with port 
3000.

Heres the requests Im issuing and the varnishlog:
https://gist.github.com/1d8f72e2d4ef1feaba3c app #2


I can see from varnishlog from app #1 that does a look up and successfully retreives from the 
cache...

lines 77 to 80
7 VCL_call     c recv lookup
7 VCL_call     c hash hash
7 Hit          c 738911632
7 VCL_call     c hit deliver


The second varnishlog from app #2 does a HitPass?  And cant find the data in the cache?  

lines 97 to 100
7 VCL_call     c recv lookup
7 VCL_call     c hash hash
7 HitPass      c 1799430110
7 VCL_call     c pass pass

######################################################################
# QUESTIONS
######################################################################

1. Why isnt app #2 picking up the cache?  I think maybe the rails app returns a slighly 
different header that could be causing a problem but Im not sure what in the header would 
cause problems according to the varnishlog output :(.
2. Is there a way to check what is in the cache from the "telnet localhost 6082" or anything 
else, if I have the key, "/articles;feed?tag_id=16" in this case.  Maybe thats whats going on, 
the data isnt being written into the cache...
3. I also tried adding some C code (commented out) to maybe puts some output out or writing to 
a file (maybe through a system call could work too) to see which part of the vcl chain Im 
hitting.  Whats a good way of doing that?  This would be great to know how to do so I can 
check the vcl rules.