Exploring Node.js Architecture

Shailendra Chauhan  Print 
Posted On : 31 Dec 2015
Updated On : 31 Dec 2015
Total Views : 6,284

Node.js has mainly two types of components – core components and node.js API (modules). The core components are written in C and C++, and node.js API are written in JavaScript. Diagram for Node.js architecture is given below:

Node.js 4.2.4 Architecture
  1. Node.js API

    These are written in JavaScript and directly exposed to outer world to interact with Node.js internal components. Node.js Binding – These are Core API, which bind the JavaScript with C / C++ libraries.

  2. C/C++ Add-ons

    You can also develop your Node.js Add-ons using C/C++ to work with Node.js.

  3. V8

    It is Google’s open source JavaScript engine, written in C++. Actually, it is a JavaScript VM which compile the JavaScript code into native machine code instead interpretation. It is the fastest JIT (Just-In-Time) compiler for JavaScript.

  4. Libuv

    It is a multi-platform support C++ library which is responsible for handling thread pool, event loop and async I/O operations in Node.js. In Node.js, blocking I/O operations are delegated to Libuv modules which has a fixed size C++ thread pool to handle these operations. When these operations are completed, they are notified to Event loop.

  5. C-ares

    It is a C library for handling async DNS request, name resolves and multiple DNS queries in parallel.

  6. http_parser

    It is a C library for parsing HTTP request and response.

  7. OpenSSL

    It is a C library for the implementation of Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols. It also provides all the necessary cryptography methods like hash, cipher, decipher, sign and verify etc.

  8. Zlib

    It is a C library for data compression and decompression.

What do you think?

I hope you get the idea of Node.js internal structure. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.



ABOUT AUTHOR

Shailendra Chauhan
An Entrepreneur, Microsoft MVP, Author, Architect And Corporate Trainer

He is a founder and CEO of Dot Net Tricks. He is the author of some of most popular e-books which encompass technical Interview on Node.js Interview Questions and Answers, ASP.NET MVC Interview Questions and Answers, AngularJS Interview Questions and Answers and LINQ Interview Questions and AnswersKnow more...

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