Large scale web

socket systemTrucLK- afterlastangel@gmail.com

- Scalability on public cloud infrastructure

- Low latency command control

- Security.

System Purpose

Architecture

Amazon EC2

IP

Camera

IP

Camera

IP

Camera

Server

Server

Server

Video Stream

Web Socket Connection

Web Socket Connection

Web Socket Connection

Control command

TLS

Auth

entication

Scalable Architecture

Amazon EC2

IP

Camera

IP

Camera

App worker

Video Stream

Control command

DNS Load balancing App worker

App workerD

ata

ba

se

Proxy

worker

Proxy

workerWeb Socket

Web Socket

DNS query

- First load balancing.

- Resolve concurrent TCP connections

problem.

- Software:

DNS Load balancing

Proxy worker

- Client authentication with TLS.

- Sharding client with app workers.

- Software:

App worker

- Any web applications: Ruby, Java, Python,

PHP …

- Stateless with central session database.

Database

- Does not need to be distributed

- Should be support auto scaling

- Suggestion: NoSQL instead of SQL

Estimation

- Complexity : Average

- Duration : 2 months