Logging in Varnish 4.0

The weakness of logging everything is that so much information is available that the administrator can sometimes be overwhelmed by all the information presented. It’s a figurative firehose of information and drinking from it can be painfull.

Martin has reimplemented a new logging framework in Varnish Cache 4.0. Out of all the new stuff in Varnish Cache 4.0 this might be the most significant one. It’s also the most complex feature, requiring quite a bit of time to fully understand how it works.