Howto: use one VCL per domain

The Varnish Configuration Language (VCL), I'm sure you know already, is the source of Varnish versatility: by only enforcing the protocol flow and leaving the business logic to the user, Varnish can be easily configured to do things far beyond caching.

However, because the logic of websites is generally focused around hosts, and the VCL thinks in terms of processing steps, configuration may sometimes a bit odd, with the need to place safeguards around your code to ensure that logic for one host isn't applied to another one.

It works, but it can be tedious and unwieldy, so today we are going to have a look at how we can silo our VCL per website to achieve better maintainability.

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18/04/18 14:30
by Guillaume Quintard

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The Varnish blog is where the our team writes about all things related to Varnish Cache and Varnish Software...or simply vents.

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