The Service Abstraction principle emphasizes the need to reveal as much of the underlying details of a service as possible in order to support the Service Discoverability principle in its goal of maximizing the quantity of published information about a service. Select the correct answer.
By providing __________________ awareness of reusable services available for composition, the __________________ principle can greatly benefit the design of service-oriented solutions. Select the correct answer.
A composition initiator is a variation of the composition controller role that represents nested composition logic. Select the correct answer.
I have a service composition with three services. Service A retrieves a list of country codes from a database and keeps this data in memory while interacting with Service B and Service C. However, because Service A is concurrently invoked many times, and because each instance of Service A loads its own copy of the country code data into memory, the demands on the overall infrastructure become too high and performance and reliability are negatively affected. Which service-orientation principle can be applied to help solve this problem? Select the correct answer.
My service was consuming too much memory so I chose to persist data between invocations to a database. After doing so, I found that the performance of my service declined significantly due to the fact that my database is shared with other applications. As a result, I further isolated the service by giving it its own dedicated database. Which service-orientation principles were involved in this scenario? Select the correct answer.
