Hey Traffic Controllers, I'd like to be able to mark a cachegroup as "CZ-only" via the API so that off-net clients (i.e. IPs that aren't included in the Coverage Zone File) don't get routed to "CZ-only" cachegroups. This is because some cachegroups aren't directly connected to the internet and routing off-net clients to those cachegroups is expensive. This proposal would change Traffic Router behavior to route these clients to the closest available cachegroup that's NOT marked as "CZ-only".
My proposal is to add a boolean column to the cachegroup table - cz_only - which is then included in the CRConfig's "edgeLocations" for Traffic Router to parse and look up when routing off-net clients. By default it will be false to keep the existing behavior. The new field will be optional in the API but NOT NULL in the DB, so null values in requests will explicitly be set to false in the DB. Questions/concerns? - Rawlin
