The difference now is that your focus shifts to testing whether the various qualities of the system are within acceptable thresholds for release.
现在的分歧在于，您的重点转移到测试这个系统的各种特性是否在发布的可接受极限内。
2
For example, it is perfectly acceptable for the system architect to also act as a developer to implement part of the realization.
举例来说，系统架构师还作为开发人员来实现用例实现的一部分是完全可以接受的。
3
Percentile response times are more relevant than the average times when it is important that each user of the system gets acceptable response times consistently.