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NetterCheung/README.md

๐Ÿ‘‹ Hi, I'm Netter Cheung (Zhang Cheng)

๐Ÿš€ About Me

Name: Netter Cheung (Zhang Cheng)
Location: Hong Kong
Experience: 6+ years as Java Engineer

Focus:
  - Highโ€‘Concurrency Backend Systems
  - JVM Performance Tuning & GC Optimization
  - Microservices Architecture (Spring Boot, Cloud)
  - Relational & NoSQL Databases (MySQL, Redis)
  - Message Queues (Kafka, RocketMQ)
  - Containerization & Orchestration (Docker, Kubernetes)
  -
Mission:
  Building robust, scalable, and efficient backend solutions for enterprise needs.

โšก Tech Stack

Tech Stack

โ˜• Java Ecosystem & Backend Tools

Spring Boot Spring Cloud Oracle Redis Kafka RocketMQ Docker Kubernetes Jenkins AWS S3

๐ŸŽฏ Current Focus

โ˜• JVM & GC Tuning Memory model, garbage collectors, heap analysis
๐Ÿš€ Spring Boot / Cloud Microservices, resilience, configuration management
๐Ÿ—„๏ธ SQL Performance Index optimization, SQL tuning, execution plans
โšก Redis & Caching Data types, persistence, highโ€‘availability
๐Ÿ“จ Message Queues (Kafka/RocketMQ) Async processing, reliability, transactional messages

โ˜๏ธ Skill Matrix

Java (Core / JVM)         โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ 95%
Spring Boot / Cloud       โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘ 92%
MySQL / SQL Tuning        โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘ 88%
Redis                     โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘ 85%
Kafka / RocketMQ          โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘ 82%
Docker / Kubernetes       โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘ 80%
Linux / Shell Scripting   โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘ 78%
CI/CD (Jenkins/GitHub)    โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘ 78%

๐Ÿ”จ Current Projects

Data Retention Core (HSBC):
  Data anonymization & encryption for compliance, PL/SQL tuning, Kafka async docs.

EMPF Platform (Lenovo PCCW):
  Highโ€‘concurrency MPF system (500k+ daily requests), multiโ€‘threading, Factory Pattern,
  Restful file API (AWS S3 resumable upload), Docker + K8s deployment.

Eโ€‘Commerce Mini Program:
  Coupon system with idempotency & limitโ€‘receipt, Redis cache, RocketMQ async order.

โ˜• Quick Facts

Favorite IDE:
  IntelliJ IDEA

Favorite Cloud:
  AWS (S3) & Azure (basic)

Favorite Language:
  Java & Python

Favorite Framework:
  Spring Boot

Favorite Database:
  Oracle

Currently Learning:
  Spring Cloud Kubernetes
  Vue programming

๐Ÿ Contribution Snake

GitHub Contribution Snake

๐ŸŒ Connect

Pinned Loading

  1. ai-engineering-from-scratch-zh ai-engineering-from-scratch-zh Public

    Forked from fancyboi999/ai-engineering-from-scratch-zh

    Agentๅทฅ็จ‹ๅธˆๆœ€ๅ…จๅญฆไน ่ทฏๅพ„ ยท ไปŽ้›ถ็ฒพ้€š AI ๅทฅ็จ‹ ยท 20 ้˜ถๆฎต 503 ่ฏพ ยท ไธญๆ–‡ๅ…จ้‡็ฟป่ฏ‘ + ้…ๅฅ—็ซ™็‚น + ๅŠจ็”ป่ฎฒ่งฃ่ง†้ข‘ ยท ๅฆ‚ไฝ•ๆˆไธบ AI Agent ๅทฅ็จ‹ๅธˆ็š„ไฟฎๆˆๆŒ‡ๅ—

    Python