Cacheability
- Policy documents
- Can be cached forever because they can never change (due to immutability requirement)
- Use HTTP Cache-Control header to specify long lifetime
- Direct policy references
- Use Policy-CC response header
- Expires
- Max-age
- No-cache
- S-max-age
-
Default lifetime is 24 hours
- Indirect policy references
- Use HTTP Expires or Cache-Control headers on the 302 response
- Default lifetime is 0 seconds
