Acquia varnish cannot cache files >10MB as per https://docs.acquia.com/acquia-cloud/performance/varnish/files/ To find for those >10MB files, search from the sites/default/files: 1find ./ -type f -size +10M -exec du -sh '{}' \; -print|grep -v ^\./| sort -n

https://www.rsreese.com/redirect-http-to-https-using-varnish/ https://varnish-cache.org/tips/vcl/redirect.html https://www.dmsp.de/system-administration/varnish-cache-vcl-301-redirect/

Config is an exact copy of https://gist.github.com/jeremyjbowers/1542949. Copying it here verbatim to avoid bit rot. 1/* 2* 3* First, set up a backend to answer the request if there's not a cache hit. 4* 5*/ 6backend default { 78# Set a host. 9.host = "192.168.1.100"; 1011# Set a port. 80 is normal Web …