Available in all subroutines.
Generation of the service VCL currently loaded.
Try it out
req.vcl.generation is used in the following solution recipes, which show real world use cases. Click RUN to provision a Fastly service, execute the code on Fastly, and see how the function behaves.
Support caching of OPTIONS requests
Normally OPTIONS requests aren't cacheable. Allow caching of OPTIONS by converting the request to a GET and back to OPTIONS if it's a cache miss.
User contributed notes
We welcome comments that add use cases, ideas, tips, and caveats. All comments will be moderated before publication. To post support questions, visit our support center and we'll find you the help you need.