Load testing in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is load testing in the context of REST APIs?

Load testing is a way to check how a REST API behaves when many users or requests happen at the same time. It helps find out if the API can handle heavy use without slowing down or breaking.

beginner

Name one common tool used for load testing REST APIs.

One common tool is Apache JMeter. It lets you create many fake users to send requests to your API and see how it performs.

intermediate

Why is it important to simulate concurrent users during load testing?

Simulating concurrent users means sending many requests at the same time. This shows how the API handles real-world traffic when many people use it together, helping find bottlenecks or crashes.

beginner

What is a response time in load testing?

Response time is how long the API takes to answer a request. In load testing, we measure if response time stays fast even when many users send requests.

intermediate

What should you do if load testing shows your API slows down under heavy use?

You can improve your API by optimizing code, adding more servers, using caching, or fixing database queries. Load testing helps find these problems early.

What does load testing primarily check for in a REST API?

A How the API performs under many simultaneous requests

B If the API returns correct data

C The security of the API

D The API's user interface design

Load testing focuses on performance under heavy use, not correctness or security.

Which of these is a common metric measured during load testing?

A Response time

B Number of API endpoints

C API documentation length

D User login count

Response time shows how fast the API answers requests under load.

What does simulating 'concurrent users' mean in load testing?

A Sending requests one after another slowly

B Checking user passwords

C Sending many requests at the same time

D Testing only one user repeatedly

Concurrent users means multiple requests happening simultaneously.

If an API crashes during load testing, what does it indicate?

A The API is secure

B The API is perfectly optimized

C The API has no users

D The API cannot handle the current load

Crashing means the API fails under heavy use and needs improvement.

Which tool is commonly used for load testing REST APIs?

A Photoshop

B Apache JMeter

C Excel

D Slack

Apache JMeter is designed for performance and load testing.

Explain what load testing is and why it is important for REST APIs.

Think about how many users might use an app at the same time.

Describe how you would simulate multiple users sending requests to a REST API during load testing.

Imagine many friends calling you at once to see if you can answer all.