Provide warnings about resource interning #75
Description
I, foolishly, thought that the ID of the resources my JSON API server returns didn't matter. They were ephemeral resources, which didn't come from a database, so I thought I could just hard code a random string for their IDs.
However, I just spent an entire day trying to work out why, when I changed the query string that requested these resources, the resources didn't change. As it turns out, even though each API request returned different data, the client.find('my_resource') promise resolved to the old data. I only now realise that this is due to resource interning. I then changed my server to return data with unique IDs, and everything worked again.
I think a big warning message in the documentation saying make sure unique data has unique IDs would be helpful here, to save people like me experiencing this. I can't fault the fact that you do this, because the JSON API spec does require that all unique data has a unique ID.