How would you implement user authentication middleware in a Node.js application?
Node Interview Questions
1,043 node interview questions shared by candidates
How do you test Node.js applications? Describe unit testing and integration testing approaches.
Explain the event-driven architecture of Node.js and how it handles asynchronous operations.
Explain how clustering works in Node.js and when it is beneficial to use?
Explain the event-driven architecture of Node.js and how it handles asynchronous operations.
How does Node.js handle asynchronous code? Provide examples of async patterns in Node.js.
Describe how you would horizontally scale a Node.js application to handle increased traffic. What tools or frameworks would you use?
What are some common security vulnerabilities in Node.js applications? How would you prevent attacks such as cross-site scripting (XSS) and SQL injection?
Can you describe a complex Node.js project you've worked on? What were the challenges and how did you overcome them?
What strategies do you use to optimize the performance of Node.js applications?
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