The Invoice service in an accounting firm is heavily reused by different service compositions. The owners of the service decide to protect its integrity by disallowing access to any part of its underlying implementation and further want to avoid the risk of having this service create a single point of failure. Which two patterns should they apply in order to accomplish this goal?
A) Contract Centralization, Decoupled Contract
B) Domain Inventory, Redundant Implementation
C) Data Model Transformation, Service Data Replication
D) Contract Centralization, Redundant Implementation

Question

Quizplus · Accepted Answer

Contract Centralization ensures that the service's interface is the only access point, protecting its implementation. Redundant Implementation prevents a single point of failure by having multiple instances of the service.

The Invoice Service in an Accounting Firm Is Heavily Reused