1. Home
2. Reference documentation
3. VCL reference
4. Variables in VCL

Uncategorized features.

• director.{NAME}.healthy — Whether a particular director is healthy
• fastly.ddos_detected — Whether DDoS is detected in the request when not in the blocking mode
• fastly.error — Error code raised by VCL functions
• fastly.ff.visits_this_pop — The number of prior visits made to this POP regardless of service
• fastly.ff.visits_this_pop_this_service — How many times the request has already been to this POP for this service
• fastly.ff.visits_this_service — The number of prior visits made on behalf of this service regardless of POP
• fastly.is_staging — Returns true if VCL code is running in your service's staging environment
• fastly_info.state — State of the request
• re.group.{N} — Regular expression group capture
• req.backend.ip — The IP address used to connect to the backend
• req.backend.name — Name of the backend for the request
• req.backend.port — Remote TCP port of the backend connection for the request
• req.customer_id — Customer ID
• req.service_id — Service ID
• req.vcl — Name of the service VCL currently loaded
• req.vcl.generation — Generation of the service VCL currently loaded
• req.vcl.md5 — The MD5 hash of the service VCL currently loaded
• req.vcl.version — Version of the service VCL currently loaded
• resp.stale — Whether the response is stale
• resp.stale.is_error — Whether the response is stale due to an error
• resp.stale.is_revalidating — Whether the response is stale while the cache is revalidating
• workspace.bytes_free — Number of bytes free in the workspace
• workspace.bytes_total — The size of the session workspace in bytes
• workspace.overflowed — Whether there was too much data for the workspace