Performance Testing using Apache JMeter — Part 2

Introduction

In previous post about performance testing, we learned the basics of performance testing and JMeter tool. We learned that “ performance testing tests how an application or resource performs under a given load “.

We also learned about performance matrices (we can measure performance in terms of):

• Response time
• Throughput (nos of requests kb/sec)
• Reliability (percentage of errors)
• Scalability (how previous matrices vary when changing the hardware or software configs of application)

We learned that we can generate load in terms of:

Depending on how we apply the load there are different types of tests:

• Load Test (validates the performance with specific load).
• Stress Test (to know the performance limits of app).
• Spike Test (to monitor the app behavior during change of load).
• Endurance Test (to detect memory or connection leaks of app)

We also had a brief introduction of JMeter which is a multi-threaded, multi-protocol client that can execute complex test scenarios for performance testing. We also learned in previous post, how to install JMeter on windows machine.

Today we will put those learning in practice and write our first simple performance test for a REST API.