Varnish Cache 3.0 beta 1 is out!
11th May 2011, 15:45 CEST by Per Buer
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I'm happy to introduce a VMOD that collects metrics and stats from Varnish into a JSON file and presents it through a user interface. If you want to know how Varnish is doing and how your backends are working in real-time, then this is the VMOD for you. The neat thing is that this VMOD gives you an overview on some Varnish counters with particular attention to backends' metrics and stats per backend. This is great if you're using Varnish as load balancer because it allows you to know what kind of transactions are happening and how Varnish is performing in real-time. Checking your backends can prevent possible annoying situations and help you to understand how Varnish works.
Varnish is typically very busy, running several thousands of transactions per second. Combine this with the rather extreme verbosity of varnishlog, and you have a firehose of information that can be rather hard to manage.
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