What is a Buffer?

A buffer is a region of memory used to temporarily store data while it is being moved from one place to another. In Node.js, buffers are particularly useful for handling binary data.

Creating a Buffer

In Node.js, you can easily create a buffer using the Buffer module.

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You can also create a buffer from a string or an array.

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Why Use Buffers?

• Binary Data Manipulation: Ideal for handling images, files, and raw data.
• Efficiency: Provides fast and synchronized access to memory.
• Stream Compatibility: You can use buffers to temporarily store data read from a stream.

Buffer Operations

Buffers allow a variety of useful operations:

• Write Data to a Buffer:

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• Read Data from a Buffer:

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• Copy Buffers:

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Practical Example: Buffer with Streams

A common use of buffers is handling binary data in streams. Below is an example of how to read a file efficiently using a buffer.

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Summary

In summary, buffers are an essential tool in Node.js for handling and manipulating binary data. Understanding how to create and use buffers will allow you to work more efficiently with data in the Node.js environment.

Buffering Explained