brianlaihkhk / sample-online-queue Goto Github PK

View Code? Open in Web Editor NEW

Coding Sample - Online Queue | Client + Queue waiting + Order submission | AWS and Docker solution | reactJs + Python3 + AWS Lambda + SQLAlchemy + RDBMS

Shell 4.70% Python 52.17% HTML 3.82% JavaScript 36.87% CSS 1.58% Dockerfile 0.87%

sample-online-queue's Introduction

Coding sample

Coding sample - Online queuing system - Submitted by Brian Lai

Features

Order + queue system
Support local / non-AWS deployment or AWS Lambda deployment for distributed system
Session based token for queuing
JWT for message submission using Authorization header
ReactJs for client side, queue waiting and send order after finish queuing
Docker and serverless support for backend service

Framework

[Client]
- reactJs
- react-scripts / jest
- jwt-simple
[Order + queue system]
- SQLAlchemy orm
- PyJWT
- pymysql
- unittest

Folder

Unit Test : Functional unit test code
Test Data : Data for testing in endpoints
Order : Order with online queue system using Python for AWS Lambda serving
Client : Client UI for online queue waiting and place orders after queuing
Setup : Setup script for database initialization
Deploy : Deployment script for Serverless framework
Tools : Tools for encryption (in env-prd.yml), encoding for testing
Documentation : Documentation
Screenshot : Application screenshot

Prerequsite

For more details please refer to Documentation folder
[AWS solution]
- AWS IAM (Permission setup)
- AWS VPC (Network connection capability)
- AWS RDS MySQL (or equivalent)
- AWS Lambda
- Serverless (for AWS Lambda deployment)
- npm, pip3
[non-AWS solution]
- MySQL (or other SQL database for OLAP)
- npm, pip3
- Docker
- (Optional) Docker swarm, Kubernetes or equivalent (For container orchestration)

Technical Assessment Requirement

Client and Backend are required to show queuing system is in function
Provide time estimation of the queue, current position for waiting
Support high volume of queuing users
Can use local or in-memory repository
Calls and creditals should be secured
Logging / documentation and testing are expected as part of the solution.

Time limit

48 hours

Remarks

Using cryptography / cryptocode / simple-crypt will show invalid elf header in AWS Lambda (Under osx development). This project will use JWT for configuration encryption and decryption.