Purge directory structures

Cache tags can also be used to purge entire directories by assigning a single tag to all objects within the directory structure.

As an example, if you want to purge all objects within www.example.com/abc/ at the same time, you can set response headers for all objects within that directory to have the same tag. This tag can then be used to purge the entire directory structure under www.example.com/abc/ through a single request. This is particularly useful for streaming content.