1. Home
2. Reference documentation
3. VCL reference
4. Variables
5. ESI

BOOL, can be read and set, but not unset.

Available inrecvfetchdelivererror

Whether to allow Edge Side Includes (ESI) processing during this request. Using set req.esi = false; will disable ESI processing. The default value is true.

For more information about edge side includes and how to use them with Fastly, see the esi statement.