Caching custom api endpoint not working

[Oleksii Com]

Describe the Bug

Caching doesn't work for custom api endpoints
Based on docs: https://docs.directus.io/self-hosted/config-options.html#cache
I setup needed headers
CACHE_STATUS_HEADER: 'Header-Name'
CACHE_ENABLED: 'true'
CACHE_NAMESPACE: 'system-cache'
It perfectly works for build-in endpoints, for instance getting collections
host/items/collection - works
host/custom-endpoint - 'Header-Name' always has MISS value

To Reproduce

1. Create custom endpoint
2. Set needed env variables
   CACHE_STATUS_HEADER: 'Header-Name'
   CACHE_ENABLED: 'true'
   CACHE_NAMESPACE: 'system-cache'
3. Call custom endpoint

Directus Version

10.11.0

Hosting Strategy

Self-Hosted (Docker Image)

Database

No response