OpenZFS stands out in its snapshot design, providing powerful and easy-to-use tools for managing snapshots. Snapshots complement a backup strategy, as they are instantaneous and don’t require a backup window. Since snapshots are atomic, they are not affected by other processes and you don’t have to stop any running applications before taking a snapshot.
Source: Basics of ZFS Snapshot Management.
This is an introduction to a programming idiom for placing extra constraints on the construction of values by using smart constructors.
Source: Smart constructors.
Django is an MTV framework. Instead of MVC (Model, Views, Controller), it uses Model, Template, and View. The View is a Python function that takes a Web request and returns a Web response (in MVC, this would be a Controller). But the heart of your application is the Model.
Source: Get to know Django models better.
In fact the root problem here isn't about Go specifically. This is a general problem that you can encounter in any language, and in fact, even beyond. When you lie to your code, there will be consequences.
Source: Interfaces and Nil in Go, or, Don't Lie to Computers, an article by Jeremy Bowers.