• Property Manager name: Origin Base Path
  • Behavior version: The v2024-05-31 rule format supports the baseDirectory behavior v1.1.
  • Rule format status: GA, stable
  • Access: Read/Write
  • Allowed in includes: Yes

Prefix URLs sent to the origin with a base path.

For example, with an origin of example.​com, setting the value to /images sets the origin's base path to example.​com/images. Any request for a my_pics/home.​jpg file resolves on the origin server to example.​com/images/my_pics/home.​jpg.


  • Changing the origin's base path also changes the cache key, which makes any existing cached data inaccessible. This causes a spike in traffic to your origin until the cache repopulates with fresh content.
  • You can't override the base path with other behaviors. For example, if in the rewrite​Url behavior you specify target​Path to /gifs/hello.​gif, this gets appended to the base path: example.​com/images/gifs/hello.​gif.
valuestring (allows variables)

Specifies the base path of content on your origin server. The value needs to begin and end with a slash (/) character, for example /parent/child/.