BAIBAI

Web Application Development

Banking

Social

Crypto

Ecommerce

Management

Cryptocurrency Exchange

Engagement model: Project-based – fixed price and ongoing support
Customer: A Financial Company in Hong Kong

Baibai is the cryptocurrency exchange website where users can buy/sell Bitcoin and other altcoins.
Baibai adds a level of unprecedented security on top of a convenient marketplace solution.

What The Client Required

A Financial Company in Hong Kong:

Deposit, withdraw, transfer cryptocurrency
Buy/sell Bitcoin and other alt coins
Protect user wallet and other attack methods by using 2FA
Referral program for user by level
Handle dispute when make a trade
Real time data update
Highload system
Online support 24/7
Provide a new way to buy/sell bitcoin
Chat between 2 users and supporter
Admin can control fee, limit and other settings real time
Verify user info
Full responsive website
Multiple language

Our Technologies

Specifically, the Saigon Technology team utilized the following technologies for the project:

ASP.NET core 2.1
Amazon cloud service (RDS, Multi deployment A-Z, Docker)
Load balancing
Scalable system
Microservices
Angular 5
Zendesk integration
SQL server
Bitcoin network
Stress test by Jmeter
Redis cache cluster
Rabbit MQ
Unit of work
Database cluster
SignalR
Multi thread
YouTrack

Challenges

Get passed customer target:
- 1.000.000 visitors per second
- 2.500 online users
- 10 trades completed per second
- All pages must render below 5s, all action must execute below 3s
- UI/UX must 100% like the design on the mobile, desktop, tablet, and on all browsers (Some special likes: UC browser…)
Protect user info, user wallet by all common attack methods
Need to understand about Bitcoin network and cryptocurrency exchange
Customer rebrands website with new look & feel
Deadline very shoot but the quality must good
China's government blocks some Google services
Need to research and config all Amazon cloud services
Multi threads on multiple servers access the same data to modify/get data

Solutions

Build solution based on microservice architecture
Split application to the module to lazy loading
Optimize code, restructure component, database and apply best practice
Move all needed data to Redis cache cluster to speed up read side
Apply Rabbit MQ to speed up write side
Research and study Amazon cloud services, Coin service, Bitcoin network
Control task, member, sprint, and the deadline by SCRUM model and YouTrack tool
Use Memcache and Redis cache to store data for a while (2s), then a background job will collect and process data later
Use another service that can run well in China

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