---
title: segmented_caching.is_inner_req
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/segmented-caching/segmented-caching-is-inner-req
---

**Type:** BOOL  
**Access:** read-only

**Available in:** log

Whether VCL is running in the context of a subrequest that is retrieving a 
segment of a file.

A request for which `vcl_recv` enabled segmented caching (by setting 
`req.enable_segmented_caching` to `true`) will spawn one or more subrequests, 
each responsible for a segment of the file. When `vcl_log` runs in the 
context of such a subrequest, `segmented_caching.is_inner_req` evaluates 
to `true`.

This is useful for controlling what you log. For example, if you are only 
interested in logging the outcome of the client's request and not the outcome 
of each individual segment that was needed to assemble it, then put your 
logging within a condition that only applies when 
`segmented_caching.is_inner_req` evaluates to false, like this: 
`if (!segmented_caching.is_inner_req) { log ... }`.