VCL

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Varnish Configuration Language, or VCL, is the domain-specific language used for configuring Varnish's caching and request policy.

VCL is compiled by Varnish into C. You can see the C code a VCL file would compile into using varnishd:

$ varnishd -d -f bits.inc.vcl -C