1. Availability
Stimulus: User
Stimulus: the number of users accessing too much, causing the system to crash or slow to respond
Products: Servers
Environment: Normal mode
Response: the system detects excessive access, and notifies the user records where
Response Metrics: a short time to restore the system to normal operation
2. Modifiability
Stimulus: Developers
Irritation: want to modify the function
Products: Taobao station
Environment: design
Response: Find a need to modify the location, make changes without affecting other functions
Response Metrics: ,, a certain time to complete the modification and no significant effect on other functions
3. Performance
Stimulus: User
Irritation: too many users to access a large number of simultaneous users to browse, purchase, etc.
Products: Taobao station
Environment: Normal mode
Response: The user operation is processed
Response Metrics: Response time within a predetermined time
4. Security
Stimulus: hackers
Irritation: access or modify system data
Products: Data Taobao
Environment: Online
Response: block access to data
Response Metrics: Success prevent hackers
The testability
Stimulus: means testers
Irritation: to test a stage has been completed
Products: snippet
Environment: the development
Response: Feedback Test Results
Response Metrics: Perform a percentage of executable statements within a certain time
6. ease of use
Stimulus: the end user
Stimulation: Effective use of the Site
Products: Taobao station
Environment: Operating
Response: cancel the order when editing
Response Metrics: prompt elimination of success