RESTful Web API Design with Node.js (Video 15)

This video tutorial covers the basics of load testing, its significance, and how to perform it using Apache Benchmark. It also explains how to enhance API performance by utilizing Node.js's cluster module to leverage multiple CPU cores. The tutorial concludes with a summary of the key points and a preview of upcoming topics.

What is the primary purpose of load testing?

• To check the syntax of API code

• To ensure the API is user-friendly

• To determine the server's response time and capacity under different conditions

• To verify the API's security features

Which tool is used in the video for load testing API resources?

• Postman

• Apache Benchmark

• JMeter

• Selenium

Why is localhost used instead of a public URL for testing?

• To improve security

• To avoid network delays not caused by the API

• To increase the number of requests

• To reduce server load

What is the effect of increasing concurrent requests during load testing?

• It decreases the server's response time

• It improves the server's security

• It increases the server's response time

• It has no effect on the server's response time

What additional step is needed when setting a cookie header for testing?

• Converting the cookie value to uppercase

• Adding spaces between values

• Removing all spaces and adding a backslash before every semicolon

• Encrypting the cookie value

How does Node.js cluster module improve API performance?

• By simplifying the code

• By utilizing multiple CPU cores

• By reducing the number of requests

• By increasing the server's memory

What is the result of using multiple CPUs for the API?

• Improved server capacity

• No change in performance

• Decreased server capacity

• Increased response time