How much do you know about Varnish?

How old is Varnish Cache this year, since its first release?
8 years
10 years
16 years
What is the current major version of Varnish Cache?
3.0
4.1
4.2
5.0
Who maintains the stable releases of Varnish Cache?
Poul-Henning Kamp
Varnish Software
Varnish Cache community
What extra goodies do you get with Varnish Plus from Varnish Software? (select all that apply)
Persistent storage
100TB cache size
SSL/TLS to the backend
What is the VCL an abbreviation for?
Varnish Configuration Language
Variable Cache Logic
Varnish Cache Language
What would you use VCL for?
Set your caching policy
Configure cache size
Ad-injection
What is *grace* in the context of Varnish Cache?
Enables faster responses for paying customers
Optimization for fast response on cache misses
Why can't you cache a backend response that sets cookies?
It will slow down processing
Trick question, of course this is possible
How can you view the backend response times in Varnish 4.1?
Use a performance testing tool
Varnishhist + -q
How do you invalidate all the content currently cached in Varnish?
Varnishadm 'ban "req.url ~ /"'
Varnishadm "purge ALL"
Restart the server
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