when performance testing occur code example

Example 1: when to use performance testing

When do you use Performance Testing?
Performance testing is done to check the performance
of website servers, database, and network.
If you are adopting waterfall methodology,
then it is important for you to check each time
release of a new version. However, 
if you are using the agile software development approach,
then you need to test application continuously.

Example 2: performance testing

In software quality assurance, performance testing is in general a testing practice performed to determine how a system performs in terms of responsiveness and stability under a particular workload.