DefCon is an organization that develops IT solutions for businesses. The product in consideration is a system for supporting a magazine subscription business, where information about customers and their subscribed products is collected, stored, and tracked. Currently, online subscriptions are not possible, so the details of subscriptions are mailed to the business and entered into the system manually. This business has around 45 employees with offices in Canberra, Sydney, and Perth. The employees have an option to work from home, so the system supports remote access. The basic architecture of the system is presented below: 1. Briefly describe the steps in the Attribute Driven Design (ADD) Process
Case Study:
DefCon is an organization that develops IT solutions for businesses. The product in consideration is a system for supporting a magazine subscription business, where information about customers and their subscribed products is collected, stored, and tracked. Currently, online subscriptions are not possible, so the details of subscriptions are mailed to the business and entered into the system manually. This business has around 45 employees with offices in Canberra, Sydney, and Perth. The employees have an option to work from home, so the system supports remote access.
The basic architecture of the system is presented below:
1. Briefly describe the steps in the Attribute Driven Design (ADD) Process
2. Considering the following quality attributes as important to this system, follow two iterations of the ADD process. For each iteration, provide the selected ASR, chosen tactic, and justification for it
- Availability – The system should be available for access during normal operational hours 99.999% of the time. In case of failure, it should recover within 2 seconds.
- Performance - The system handles a large amount of data as there are 90 thousand customers with more than a million orders. The system should handle this load with a latency of 1 second.
- Security – The system should resist any unauthorized access anytime with 99.999% accuracy.
- Performance - The system should respond to user requests with an average latency of 1 second.
3. Submit the resulting architecture with clearly defined modifications in the basic architecture provided (The added components should be clearly labeled). You can use a pen/pencil to draw the diagram or you can draw it using MS Visio or any other software or tool
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