可扩展性和压力测试之间的区别

可扩展性测试：
进行可扩展性测试以确保软件产品可以管理用户流量、数据量、交易计数频率和许多其他方面的预定增长。它测试系统、流程或数据库满足不断增长的需求的能力。它是一种软件测试，其中软件应用程序、系统、网络或过程的性能根据其扩展或缩减用户请求负载数量或其他此类性能属性的能力进行测试。

压力测试：
压力测试是一种软件测试，通过测试超出正常操作的限制来发现软件的健壮性。压力测试对于关键软件尤为重要。压力测试强调重负载下的健壮性、可用性和错误处理，而不是正常情况下的正确行为。

可扩展性和压力测试之间的区别：

Scalability Testing	Stress Testing
It is used to scale the performance of the software under user request load.	It is used to test the software’s behavior under sudden heavy load.
It tests the response time under heavy request load.	It only tests the performance of the software.
In scalability testing, load is varied slowly.	In stress testing, load is varied abruptly.
It is performed to find the threshold load.	It is carried out to find the system recovery ability after sudden failure.
It tests CPU and memory usage.	It doesn’t test such attributes.
It is used to test server-side robustness.	It is used to test client-side robustness.
It tests client-side degradation.	It tests server-side degradation.
It tests end user experience under heavy load.	It test experience under sudden change in load.