Cache 301 lookups

[3rd-Eden]

301 redirects are permanent redirects. We're currently not caching these redirections so they are done every single time we hit an API endpoint. If no caching headers are send with the requests we should store the source URL->Redirection in a LRU cache. Before a request is send we should replace the URL with the redirection.

This could yield significant benefits for API calls that are moved etc.