I get how companies like StackMob are trying to make it easier for developers to get their apps up and running quickly and take a lot of the hassle out of setting up boilerplate services. I’ve played around with StackMob and the tools certainly seem helpful and easy to use. Wholistically, I think they’re doing a good thing.
The disappointing side of the rise of these kind of services is that new developers may be tempted to opt in for a vendor like StackMob to provide an API endpoint rather than face the challenges and thought-processes involved in writing it themselves.
Writing a core service yourself gives you fine-grain control over your business logic. StackMob does let you upload custom code, a feature I admittedly haven’t tried yet, but the concept seems clumsy (you have to JAR up your code then upload it).
Further, needless to say, you learn a lot when you do something yourself. You don’t just gain mastery over the technical steps involved, you can also achieve big conceptual milestones when you need to deeply think about a problem on your own. There’s a big difference between hearing someone tell you that HTTP is a stateless protocol and learning what that actually means.
In doing something like setting up a REST endpoint you will probably reach the same ultimate destination as the current best-practice thought, simply because you will make mistakes that teach you why these patterns are considered best practice. More power to you.
At the end of the day, think of it this way: which would a potential employer value more: your familiarity with a vendor SDK or some lessons learned from the school of hard knocks?