Cannot figure out why I am getting a miss on a static URL

Jennings III, Raymond raymond.jennings at
Thu Jan 15 15:36:46 CET 2015

I have a static URL that I set a TTL for 24h but yet every so many minutes
I get a "miss" (as shown in my varnishncsa.)

I purge this URL every 24 hours.

1 - The URL never has any parameters.
2 - I do not hash over the hostname only the URI
3 - Nobody is issuing any PURGE or BAN requests
4 - n_lru_nuked is always 0
5 - There are no 500 or 400 responses

What is causing this URL to get a miss when everything I see looks good?
If the cache size has been exceeded I would have expected to see the nuked
value be something other than 0.

vcl_fetch is basically just:

set beresp.ttl = 24h;

Any reason why Varnish seems to be taking it upon itself to cause this
miss?  In 24 hours I get about 12000 requests and out of those 120 misses
and I should see 2 miss requests at most.

The backends are healthy.

This is varnish-3.0.6-1.el6.x86_64


Raymond Jennings III
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