1.

2. 1. Intro 2. 3. App 4. Architecture 5. 6.

3. Intro

4. Intro SNS ( / / / ) : Javascript, Java Platform : Node.js, Android

5.

6. , .

7. 8 6 4 2 0 2010 2012 2020 ()

8.

9. Application

10. App Feed / / Category / / / / / / / My page / / Profile

11. Architecture

12. System Architecture Amazon RDS Amazon EC2 Ubuntu 13.04 Node.js MySQL Client Request JSON Streaming

13. Server Architecture Media process JSON Thumbnail Manager Crop Manager Module Async File Manager Client HTTP Node.js Single Thread Connection pool RESTful Web Server Login Module Timeline Module User Module

14. Technology

15. Technology Client Thumbnail Server Media Process

16. Connection Pool Request Request Server Technology

17. Technology Async Task #1 Task #2 Exception handler & Final task

18. Q & A