Authors Sam Newman
7 days
30 days
All time
Recent
Popular
So a few people have asked why I have this snarky response. What is my problem with this service? Well, to be clear, it’s not an issue with GraphQL, it’s an issue with direct coupling with underlying datasources #thread
The service as advertised makes it simple to map a GraphQL definition against a database. Now, what’s the problem with this? Well, the devil here is in the detail. But fundamentally it comes down to how important information hiding is to you.
Information hiding is the concept whereby you expose as little information as possible to external parties. Anything you expose over a boundary becomes part of the contract between provider and consumer.
Anything I hide inside a boundary can be changed freely. Anything I expose must be maintained if I want to maintain backwards compatibility.
Why is backwards compatibility important? If I break compatibility with external consumers of an interface, then such a change can lead to the need to lock step releases of consumer and producer, or even worse accidental breakages in prod.
Great to see AWS providing direct data coupling as a service. https://t.co/TEk8ybPTro
— Sam Newman (@samnewman) January 5, 2021
The service as advertised makes it simple to map a GraphQL definition against a database. Now, what’s the problem with this? Well, the devil here is in the detail. But fundamentally it comes down to how important information hiding is to you.
Information hiding is the concept whereby you expose as little information as possible to external parties. Anything you expose over a boundary becomes part of the contract between provider and consumer.
Anything I hide inside a boundary can be changed freely. Anything I expose must be maintained if I want to maintain backwards compatibility.
Why is backwards compatibility important? If I break compatibility with external consumers of an interface, then such a change can lead to the need to lock step releases of consumer and producer, or even worse accidental breakages in prod.