What is JMeter and how do I use it for API testing?

What is JMeter and how do I use it for API testing?

JMeter is an open-source tool designed for load testing and performance measurement of applications, including APIs. You can use it to simulate multiple users and analyze the performance of your API.

How do I set up a test plan in JMeter for my API?

To set up a test plan in JMeter, start by creating a new test plan, then add a Thread Group to define the number of users and ramp-up time. Next, add an HTTP Request sampler to specify the API endpoint and parameters.

Can I view the results of my API tests in real-time?

Yes, JMeter provides various listeners like the View Results Tree and Summary Report that allow you to see the results of your tests in real-time.

What are some common issues I might encounter while testing APIs with JMeter?

Common issues include incorrect API endpoints, authentication problems, and performance bottlenecks. It's essential to validate your requests and monitor server responses.