Node.js test

The Node.js test evaluates a candidate’s understanding of core Node.js concepts and their ability to develop scalable, efficient, and fast server-side applications. Key areas include non-blocking, asynchronous programming, which allows Node.js to handle multiple tasks concurrently without freezing the application.

Candidates will be tested on their knowledge of essential Node.js modules, such as file systems, streams, and events, and how to use them to build server-side applications. The test will also cover working with Express.js to develop RESTful APIs, focusing on handling HTTP requests and responses, creating middleware, managing routing, and utilizing various HTTP methods.

The test will explore Node.js best practices, including error handling, logging, and maintaining a clean codebase. Candidates will need to demonstrate experience interacting with databases, especially NoSQL solutions like MongoDB, and utilizing asynchronous programming patterns like callbacks, promises, and async/await.

Advanced topics such as API security, authentication, session management, and deploying applications with cloud services or containerization platforms like Docker will be covered. Candidates will need to show proficiency in testing, debugging, and optimizing Node.js applications for high availability and performance.

The test will also evaluate knowledge of managing dependencies using npm, utilizing packages, and working with version control systems like Git. A strong understanding of event-driven architecture and the event loop model will be crucial for success.