Customize your content delivery.
Protect your services and applications.
Experiment with Fastly's edge computing platform.
Go from zero to Fastly with these step-by-step guides and tutorials.
Start with the basics and learn how Fastly lets you take advantage of the modern internet.
BOOL, read-only.
Available inlog
Whether the client's request leaves the upper bound of the range open.
This variable will evaluate to false when segmented caching is not enabled.
false