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Node Js


What is Node Js ?

Node.js is an open-source, cross-platform JavaScript runtime environment that allows developers to execute JavaScript code outside of a web browser. It is built on the V8 JavaScript engine, the same engine used by Google Chrome to execute JavaScript code. Node.js is designed for server-side scripting, making it an ideal choice for building scalable, real-time web applications. One of its key features is its asynchronous and non-blocking I/O model, which enables efficient handling of multiple concurrent connections, making it well-suited for applications that require high concurrency and responsiveness.

Node.js utilizes an event-driven architecture, operating on a single-threaded event loop, which allows it to handle numerous simultaneous connections without the need for spawning multiple threads for each connection. This characteristic ensures high efficiency and performance for real-time applications.

Node Js Syllabus

  1. Introduction to Node.js:

    • What is Node.js?
    • History and background.
    • Advantages and use cases.

  2. JavaScript Fundamentals:

    • Refresh on JavaScript basics (if the course assumes prior knowledge of JavaScript).
    • Asynchronous programming with callbacks and promises.

  3. Node.js Modules:

    • Understanding modules and require.
    • Creating and exporting modules.
    • Using npm (Node Package Manager) to manage modules.

  4. File System and Streams:

    • Reading and writing files using the fs module.
    • Working with streams for efficient data processing.

  5. HTTP and Web Servers:

    • Building HTTP servers with the built-in http module.
    • Handling HTTP requests and responses.
    • RESTful API development.

  6. Express.js Framework:

    • Introduction to Express.js, a popular web application framework for Node.js.
    • Routing and middleware in Express.js.

  7. Asynchronous Control Flow:

    • Techniques for managing asynchronous operations (e.g., callbacks, promises, async/await).
    • Error handling in asynchronous code.

  8. Databases and Data Storage:

    • Connecting to databases (e.g., MongoDB, MySQL) using Node.js.
    • CRUD operations (Create, Read, Update, Delete) with databases.

  9. Authentication and Security:

    • Implementing user authentication and authorization.
    • Best practices for securing Node.js applications.

  10. Real-Time Web Applications:

    • WebSockets and Socket.io for real-time communication.
    • Building chat applications and live data updates.

  11. Deployment and Scaling:

    • Deploying Node.js applications to servers or cloud platforms.
    • Techniques for scaling Node.js applications.

  12. Testing and Debugging:

    • Writing tests for Node.js applications using frameworks like Mocha and Chai.
    • Debugging tools and techniques.

  13. Performance Optimization:

    • Identifying and resolving performance bottlenecks in Node.js applications.