1

Is it possible to configure Varnish 4 to cache all content regardless of what it is? I tried what's mentioned here: http://www.atomictag.com/2016/04/25/varnish-cache-all/ but my hit rate is still low.

If this is possible I can then configure Varnish to refresh the cache every 15 minutes or so from the backend. I know this is not the best practice but I am ok with serving my website visitors content that's 15 minutes old, if I can increase the website loading speed.

The Varnish server has 32 GB of RAM but only 8 GB is used. I've configured -malloc, 25G.

1
  • 1
    Do you use cookies? Is there dynamic content? Are you using GET or POST requests? And finally could you share your vcl? Jan 8 '17 at 22:01
1

If you already tried with set beresp.ttl = 1m; as mentioned in the link you provided the reason Varnish is not caching much could be due to a number of reasons.

  1. Use varnishlog to see details of the headers and the flow of actions Varnish takes when you get a URL you are expected to be cached, for example:

sudo varnishlog -q 'ReqURL ~ "^/css/main.css" and RespHeader:Age == 0'

This will show you the details of misses for a particular URL.

  1. Find out if you are stripping the cookies properly https://www.varnish-cache.org/docs/4.1/users-guide/increasing-your-hitrate.html?highlight=cookies

  2. You can also override the Hash Varnish uses if you want Varnish to cache even similar URLs: https://varnish-cache.org/docs/trunk/users-guide/vcl-hashing.html

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.