Varnish keeps missing cache ,cookies?

Question

I have a bit of trouble getting varnish to cache correctly.

When I go to a page and hit refresh , varnish will return the cached page. But if I use another computer

Answer 1

You can use the varnishlog command line tool to watch what Varnish is doing as it handles each request. You can see if any cookies are splitting through for example.

I have a feeling it may be the user-agent that is slightly different on the other computer. Varnish includes this value in the key if it is know. We have a rule in our vcl_recv which is:

set req.http.User-Agent = "";

Which fixed a similar problem for us.