I am wondering if there's a limit to how many custom domains an AppEngine application can have? I am creating a service where I would like to allow customers to point their domain to my app (GAE-java), and I'll use URL rewriting to serve content for the customer -- I know right now I have to manually add the domain (as in Many Custom Domains for AppEngine Instance) but I am not expecting high volume and don't have the resources to setup a reverse proxy.
What are the potential gotchas? I know there's a limit of SSL certificates I can install per account, so I'd have problems if I need to support HTTPS for the custom domains, but anything else? Or perhaps I should look into services like cloudflare to go on top?
Thanks, Adrian