The original post is published on the Just Eat tech blog at this URL [http://tech.just-eat.com/2017/03/02/how-to-abstract-your-persistence-layer-and-migrate-to-another-one-on-ios-with-justpersist/] . In this blog post we introduce a solution to deal with data persistence. We developed it for the Just Eat iOS app and we call it JustPersist. It’