Author Image

Hi, I am ltyzzz

Li Tianyu

Software Engineer

I am a new master student in Computing from National University of Singapore. I have been learning programming for three years. In my spare time, I like to develop some small projects of my own or make wheels, etc.

Skills

Java
Java

Using as the main language for professional development, especailly for back-end development. Know the basic fundamentals of JVM.

Python
Python

Know basic Python programming. Used for basic data structure and algothrim programming, occasionally crawlers to get data.

Go
Go

Know basic Go programming. I am currently learning how to develop websites through the Gin or Goframework and I will further study how to build microservices using Go.

Php
Php

Trying out different programming languages is my interest, and I am also amazed by the powerful design concept of Laravel framework (convention over configuration) which frees me from repetitive and boring development work.

Spring
Spring

The most frequently used back-end framework for me.

MySQL
MySQL

Using as the main SQL for data storage. Know its basic features, such as indexes, locks, transactions, etc.

Redis
Redis

Using as the main Cache in my daily development. Know its basic features, such as efficient underlying data structure, duration, master-slave architecture, etc. Also implemented a toy distributed lock through redis.

Docker
Docker

Using Docker to deploy various services in containerized manner. When setting up a project, it is also my first choice.

Distributed Systems
Distributed Systems

Know some basic distributed system concepts and protocols, such as Paxos, Raft, microservice, etc. Once wrote a simple toy RPC framework implementing basic functions.

HTML
HTML

Know the basic usage of HTML, CSS, Javascript.

Vue
Vue

Use Vue front-end framework to develop web for PC and mobile (not professional).

React
React

Use Vue front-end framework to develop web for PC and mobile (not professional).

Git
Git

Use git as main version control tool.

Linux
Linux

Know basic commands of linux. Use it for server deloying.

Projects

1
KillBug - Programming Q&A BBS

April 2023 - Present,

Your Most Reliable Programming Assistant.

Responsibilities:
  • Implemented core functions such as posting questions, posting rewards, liking, commenting, etc.
  • Adopting the WebSocket protocol implemented real-time communication and collaborative editing functions, making it easy for users to collaborate on coding.
  • By using the Spring Cloud microservice technology stack (Nacos, Gateway, Sentinel), the project implements microservice governance to ensure high availability of services. The Gateway is used to implement global authentication, global exception handling, global throttling, and global security verification.
  • By using Dubbo RPC technology to enable communication between microservices.
  • Implemented sensitive data(phone, email, etc.) desensitization through AOP, Annotation and Serialization techniques to protect user privacy.
  • Deployed microservices and middlewares through Docker, reducing deployment costs and makes maintenance and migration easier.
RiytiyTube - Bullet Chat Video Sharing Website

Jan 2023 - Present,

Distributed Microservice Project based on Spring Cloud. Core Service -> Video Play, Post Push, Instant Messaging, Social Networking, etc.

Responsibilities:
  • Developed Front-End Website using Vue3.0 and Nuxt framework, achieving server-side rendering..
  • By using Redis caching technology, a general counting service is built to implement functions such as liking, counting, and statistics, which improves system scalability and high performance.
  • Designed and Realized Post-Feed Service by adopting push-pull mode.
  • Designed a site-wide notification system that implements message notification and forwarding..
2
3
Remote Procedure Call Framework Based on Zookeeper and Netty

Sept 2022 - Dece 2022,

Mainly used for solving remote call problem with mutiple service.

Responsibilities:
  • Realized the Proxy layer, Routing layer, Registration Center layer and Serialization layer.
  • Used zookeeper as the service registration and discovery center.
  • Used polling algorithm and random selection algorithm as Routing Layer protocol.
  • Used Hessian and Kryo for Serialization and Deserialization.
  • Used the Chain of Responsibility design pattern to filter requests.
  • Implemented Service Protection through timeout retransmission and service current limiting.
  • Simplified usage of the framework by combining with Spring-Boot-Starter
Smart Parking Lot Project

Nov 2021 - July 2022,

Jointly led by Wuhan University of Technology and Hongxun Technology Co., Ltd.

Responsibilities:
  • Designed and developed background management system and small program UI.
  • Developed the Back-End system through Spring Boot and Spring Cloud with micro services.
  • Improved overall performance through Redis Cache and Decreased coupling though Message Queue.
  • Ensured system can host 1000 concurrent users through stress test.
  • Assisted colleagues to complete the joint testing of hardware and software systems.
  • Deployed the project to the cloud server.
4
5
Data Cleaning and Personalized Recommendation system Based on Spark and Kafka

April 2022 - June 2022,

Used as a branch of the parking lot system to provide users with personalized recommendation services

Responsibilities:
  • Used Mongodb as main database and Redis as cache.
  • Implemented batch statistical service using Spark Core + Spark SQL.
  • Implemented offline recommendation service through ALS algorithm and Spark Core + Spark MLlib.
  • Implemented log collection service through Flume framework to collect user rating data.
  • Implemented Real-time recommendation service through Spark Streaming and processed user data through custom recommendation algorithms.

Education

National University of Singapore
2018-Present
Master of Computing
Wuhan University of Technology
2018-2022
B.E. in Information Engineering
GPA: 3.8 out of 5
Extracurricular Activities
  • Participated in Undergraduate Independent Innovation Project
  • Participated in School-Enterprise Cooperation Project
  • Won School Scholarships for several times

Github Repo

ltyzzz-rpc
ltyzzz-rpc
Owner Oct 2022 - Present

Remote Procedure Call Framework Based on Zookeeper and Netty

professional rpc distributed
Star
Leetcode-Everyday
Leetcode-Everyday
Owner Oct 2022 - Present

An open-source leetcode-problem-solving repo to improve my understanding of data structures and help others at the same time.

hobby data structure algorithm
Star