I will develop a robust backend application with spring boot and java

J
john_wklf
J
john_wklf
Zezhong L
develop a robust backend application with spring boot and java
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develop a robust backend application with spring boot and java

About this gig

I specialize in building high-performance backend systems with Java, Spring Boot, and MySQL. I have hands-on experience developing a high-concurrency train ticket booking system that handles 1,000+ QPS with zero overselling, using Redisson distributed locks, Redis multi-level caching, and RabbitMQ async messaging.

My core skills include: Backend: Java, Spring Boot, MyBatis-Plus, JVM tuning Database: MySQL optimization (index tuning, query performance), Redis caching, MongoDB Frontend: Vue.js DevOps: Git, Maven, RabbitMQ

Whether you need a single API, a complete feature module, or a full-stack web application, I will deliver clean, optimized, and production-ready code. Let's build something great together!

  • Programming language

    • Java

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Databases
    • Source control

  • Frontend framework

    • Vue.js

  • Backend framework

    • Node.js
    • Spring

  • AI & low/no code builders

    • Claude

Get to know Zezhong L

Zezhong L

Backend Development Engineer

  • FromChina
  • Member sinceJul 2026

  • Languages

    Chinese
I am a Backend Development Engineer specializing in Java and Spring Boot with experience in high-concurrency systems and AI data processing. I have successfully implemented distributed locks and multi-level caching to optimize system performance and have a strong background in big data tools like Hadoop and Spark.

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