Load testing in Rest API - Mini Project: Build & Apply

Load Testing a REST API

📖 Scenario: You work as a developer testing a simple REST API that returns user data. You want to check how the API behaves when many requests are sent quickly.

🎯 Goal: Build a small program to send multiple requests to the API and count how many succeed.

📋 What You'll Learn

Create a list of URLs to test

Set a variable for the number of requests to send

Use a loop to send requests and count successful responses

Print the total number of successful requests

💡 Why This Matters

🌍 Real World

Load testing helps check if an API can handle many users or requests at once without slowing down or crashing.

💼 Career

Developers and testers use load testing to ensure web services are reliable and perform well under pressure.

1

Create the list of API URLs

Create a list called api_urls with these exact URLs: "https://jsonplaceholder.typicode.com/users/1", "https://jsonplaceholder.typicode.com/users/2", and "https://jsonplaceholder.typicode.com/users/3".

Rest API

# Create the list api_urls with the given URLs
# Your code here

Need a hint?

Use square brackets [] to create a list and include the URLs as strings inside.

2

Set the number of requests

Create a variable called num_requests and set it to 5 to represent how many times you will send requests to each URL.

Rest API

api_urls = [
    "https://jsonplaceholder.typicode.com/users/1",
    "https://jsonplaceholder.typicode.com/users/2",
    "https://jsonplaceholder.typicode.com/users/3"
]
# Set num_requests to 5
# Your code here

Need a hint?

Just write num_requests = 5 on a new line.

3

Send requests and count successes

Import the requests module. Create a variable called success_count and set it to 0. Use nested for loops: the outer loop uses _ to repeat num_requests times, the inner loop uses url to go through api_urls. Inside the inner loop, send a GET request to url using requests.get(url). If the response status code is 200, increase success_count by 1.

Rest API

api_urls = [
    "https://jsonplaceholder.typicode.com/users/1",
    "https://jsonplaceholder.typicode.com/users/2",
    "https://jsonplaceholder.typicode.com/users/3"
]
num_requests = 5
# Import requests and count successful responses
# Your code here

Need a hint?

Remember to import the requests module first. Use two loops: one for the number of requests, one for each URL.

4

Print the total successful requests

Write a print statement to display the text "Total successful requests:" followed by the value of success_count using an f-string.

Rest API

import requests

api_urls = [
    "https://jsonplaceholder.typicode.com/users/1",
    "https://jsonplaceholder.typicode.com/users/2",
    "https://jsonplaceholder.typicode.com/users/3"
]
num_requests = 5

success_count = 0
for _ in range(num_requests):
    for url in api_urls:
        response = requests.get(url)
        if response.status_code == 200:
            success_count += 1

# Print the total successful requests
# Your code here

Need a hint?

Use print(f"Total successful requests: {success_count}") to show the result.