> This seems not much more than trying to standardize a global registry lookup for your models. Why not just make your collection globally accessible, and refer

> This seems not much more than trying to standardize a global registry lookup for your models. Why not just make your collection globally accessible, and reference the fetched model with Because the collection could be inside another object. Also there would be other places in the app where ticket models are being initialized. By defining/having to refer to global variables, you are just writing code that is harder to maintain. The identity map approach is more like Rails where in a single request, the same SQL does not hit the db again and just returns the pre-fetched results. You don't have to think about where else you are fetching the same records ever.