Money Transfers API

Requirements

1. keep it simple and to the point (e.g. no need to implement any authentication, assume the API is invoked by another internal system/service);
2. use whatever frameworks/libraries you like (except Spring, sorry!) but don't forget about the requirement #1;
3. the datastore should run in-memory for the sake of this test;
4. the final result should be executable as a standalone program (should not require a pre-installed container/server);
5. demonstrate with tests that the API works as expected.

API Design

Document with API design.

Discussion

• This solution have clean code practices based on SOLID principles;
• Tests to all layers;
• Executable Application using Jersey with self-contained Grizzly;
• In Memory repositories;
• To make it simple the transfers are not Transactional. However to mitigate such problem in production scenario, it would be possible create a compensation action, if something fails.

How to Run

The application is built with Java 8 and Apache Maven.

• Run Application

mvn exec:java

• Run Tests

mvn clean compile test