Which language elements of the ESI specification does Fastly support?
Fastly supports the following ESI language elements:
Fastly doesn't support the following ESI language elements:
- choose | when | otherwise
- try | attempt | except
- ESI Variables
For more information about the ESI language, see the latest version of the ESI Language Specification 1.0 submitted to the World Wide Web Consortium. For examples detailing how you can use ESI with Fastly, see our blog series on using ESI.
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