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How much do you know about Varnish?

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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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