Node.js is a platform built on Chrome’s JavaScript runtime, designed for fast, scalable network applications using an event-driven, non-blocking I/O model. It is significantly faster than Python and Ruby, making it suitable for data-intensive, real-time applications. The document discusses Node.js advantages, installation, and a demo with MongoDB, including a comparison of NoSQL databases.

1. a Simple Powerful Platform
Hendri Karisma
CodeLabs UNIKOM
2014

2. What is NodeJS?
“Node.js is a platform built on Chrome’s JavaScript runtime
for easily building fast, scalable network applications.
Node.js uses an event-driven, non-blocking I/O model
that makes it lightweight and efficient, perfect for dataintensive real-time applications that run across
distributed devices.”

3. How Fast
Against Python3, JavaScript V8 Engine has
a median benchmark 13 times as fast with
a roughly similar code size. 3 Against
Ruby 1.9, the median benchmark is eight
times as fast

4. Theory
• Build Google’s V8
JavaScript engine
• I/O Latency

6. I/O Latency

7. The Problem

8. Scale with Multi Thread
• Overhead pada switching
• Execution stask take up memory
• Complicate concurrency

9. Scale with Process
• High memmory Usage
• Process scheduling

10. The Solution in Node.js

13. Tantangan
• Asynchronizing I/O
• Debugging
• CPU-Intensive Tasks
– Harus berhati-hati terhadap penggunaan
thread untuk setiap tasks
• Perkembangan versi platform sangat
cepat

14. Keuntungan
•
•
•
Multiplatform
Lightweight
Deadlock free
– single thread, simplifies concurency
•
Monoglot Programming
– dari mulai back-end hingga front end dapat hanya menggunakan
javascript
•
•
•
Popular
Fast
Community and NPM (8,465 packages)
*2012-03-21
•
•
Small core
Short Learning Curve

15. NPM
• express
• socket.io
• mongoose
• connect
• async
• jade

16. how to install node.js
• sudo add-apt-repository ppa:chrislea/node.js
• sudo apt-get update
• sudo apt-get install nodejs

17. Demo
• Hello World
• SimpleChat Application

18. MongoDB (NoSql Database)
• Not Only SQL (NoSQL)
• Non Relastional Database Management
System

19. Kenapa NoSQL (MongoDB)
•
•
•
•
•
Database non relasional
Terdistribusi dan scale out (secara horisontal)
Tanpa skema atau dengan skema yang longgar
Sederhana dalam pemakaian (API)
Kemudahan replikasi

20. Document-Oriented
• Notion of a Document
• Enkapsulasi dokumen dan enkoding
dalam format standard (XML, JSON,
YAML, PDF, dll)
• Mirip relational DB, tetapi setiap ‘row’ tidak
harus memiliki struktur yang sama.

21. Demo
• Simple CRUD with express and MongoDB

22. Thanks....
Hendri Karisma
http://about.me/hendriKarisma
source code sample program demo dapat di download di
https://github.com/situkangsayur?tab=repositories