@matheos thanks for your response. So you think there is no implementation in ember-data? Because often I just don’t find what I’m searching for in the docs. Your idea is a good starting point but I also need to consider the fact that some of the ids in the array_of_ids are not loaded already.
For example: id 1, 2, 3 were fetched before and id 4, 5, 6 weren’t fetched. So I could retrieve 1, 2 and 3 directly from the store and 4, 5 and 6 from the backend. Then I want to return 1, 2, 3, 4, 5 and 6 after 4, 5 and 6 arrived.