What's new in Varnish 4.0

This section describes the changes that have been made for Varnish 4. The first subsection describes overarching changes that have gone into Varnish 4.0, while the second subsection describes changes you need to make to your current configuration (assuming you are on Varnish 3.x) as well as any changes in behaviour that you need to be aware of and take into consideration when upgrading.

• Changes in Varnish 4
  • Client/backend split
• Upgrading to Varnish 4
  • Changes to VCL
  • Changes to existing parameters
  • New parameters since 3.0
  • Other changes