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Miaosha is a product-selling website which can handle the traffic from a million of users. My backend system can reach 20,000 QPS with 8 t3.nano instances and maintain 300,000 WebSocket connections with 6 t3a.small instances.
GitHub repo: https://github.com/nghdavid/miaosha

秒殺系統

Backend Engineer

陳冠豪

• Excels at web development, cloud service and performance optimization
• Be able to propose reliable solutions and solve problems independently with programming
• A flexible team player good at coordinating with frontend and app developers


碩士論文: Encoding the Predictive Information of Visual Motion in the Retina

國立清華大學

• C++: Computer programming language (A+), Algorithms (A), Computer programming (A+)
• Python: Basic Computer Programming for life science (A), Programming for Business Computing (A+)
• Math: Linear Algebra (A+), Probability (A)
• MATLAB: Scientific computing (A+)


國立台灣大學

AppWorks School

• Completed a stateless e-commerce website in 4 weeks including cache mechanism and rate limiter
• Cooperated with cross-functional team (Front-End, Android, iOS) for developing new features such as coupon and arrival notice, contributed ideas, and sent emails with serverless framework (API Gateway, Lambda)
• Developed with SCRUM methodology and cooperated efficiently with team members
• Designed a URL shortener with high concurrency by utilizing database sharding and unique key constraint



台灣台北市

• Performed image analysis with Python in Ubuntu
• Analyze time series data with NumPy and SciPy


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