35. 🔁 Node.js Duplex & Transform Streams Explained with Real Code Examples | Custom Implementation

In this video, we dive deep into Duplex and Transform Streams in Node.js. You’ll learn how Duplex streams work as a combination of Readable and Writable streams, how they operate independently, and where they are used in real-world applications like TCP sockets.

We also explore Transform streams and show you how they extend Duplex to link input and output data—perfect for encryption, compression, or any kind of on-the-fly transformation.

👨‍💻 By the end, you’ll implement a fully working Custom Duplex Stream from scratch and clearly understand how Transform streams work behind the scenes.

👉 Whether you're building a file processor or working with socket streams, this video is essential for mastering advanced Node.js stream concepts.

📂 Topics Covered:

What is a Duplex Stream?

Readable vs Writable in Duplex

Internal buffers explained

Implementing a custom Duplex Stream

How Transform Stream links read/write

Use cases of Duplex & Transform streams

PassThrough Streams vs Transform Streams

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