Tips & Tricks

The documentation in the standard distributions includes the reference manual, user guides and tutorials, installation instructions and various other kinds of fundamental information.

This is a space for nuggets of knowledge and solutions for specific requirements, how to get your Varnish deployment to run well, how to discover the cause of a problem and so forth.

In part, this section is intended as a successor to the old wiki, which had a wide range of useful hints, but much of which was written for older versions and is now outdated.

A Tips & Tricks sections thrives from everyone’s active contribution, so please feel free to add your ideas, update the content, or to correct errors.

• VCL Snippets
  • 301/302 Redirects
• Reading the varnishlog
  • Backend fetch failures and the FetchError tag
• Migrating from old versions
  • Upgrading should be easy
  • Versions
  • We have a lot of documentation
  • No silent changes
• Versions of the VCL language
• Compiling on Alpine
• Signing Cookies with Vinyl Cache
  • The Problem: A simple example
  • The Solution: Signing Cookies
    • Summary
  • See it in action
  • How to use
    • Install required VMODs
    • Install and modify cookiesign.inc.vcl
    • Call cookiesign procedures from your main VCL
  • References
  • Acknowledgements
• Validating Signed URLs with Vinyl Cache
  • VCL
  • References
  • Acknowledgements
• Iocaine: What is and how to integrate with Vinyl Cache
  • What is?
    • How Iocaine integrates with proxies
    • The garbage generator
    • The classifier
    • Request information
    • Pattern matching
  • What is it not?
    • The problem with “traditional” bot detection
  • Integrating Iocaine into Vinyl Cache (the simple way)
  • Vinylcaine: The Iocaine classifier in VCL
    • Vinylcaine performance compared with Iocaine
      • The Numbers
      • Details
  • Conclusion
  • References
  • Acknowledgements