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Hi there ๐Ÿ‘‹๏ผŒI'm dong4j

Software Engineer at China

Contact me:

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๐Ÿ‘‡ Hit in your console or terminal to connect with me.

๐Ÿ‘† This command line tool can be found at npx-card

github-snake

A little more about me...

Hi, I'm dong4j, a Full Stack Developer ๐Ÿš€ from China. Currently becoming an independent developer. Beside's programming, I also like motorcycles, traveling, and cats.

  • ๐Ÿง Interested in everything Cloud Native and AI
  • ๐ŸŒฑ Currently learning Golang and Python
  • ๐Ÿ“š Reading about Cloud Native, Kubernetes, and DevOps
  • โค๏ธ Open Source Software
  • ๐Ÿง Linux ... it does infinite loops in 5 seconds..
const dong4j = {
    pronouns: "He" | "Him",
    code: ["Java", "Python", "Javascript"],
    askMeAbout: ["web dev",, "cloud computing",, "tech trends"],
    technologies: {
        frontEnd: {
            js: ["React", "Vue.js"],
            css: ["Sass", "Tailwind CSS"],
            uiLibraries: ["Material UI", "Ant Design", "Element UI"],
        },
        backEnd: {
            java: ["Spring Boot", "Spring Cloud", "Vert.X"],
            js: ["NodeJS"],
            python: ["Flask"],
            go: ["Gin"]
        },
        mobileApp: {
            crossPlatform: ["Flutter", "uni-app"],
        },
        devOps: ["Docker๐Ÿณ", "CI/CD", "Nginx", "GitHub Actions"],
        cloudServices: {
            aws: ["Alibaba Cloud", "AWS Fargate", "EC2", "S3", "Lambda", "CloudWatch", "RDS"],
        },
        databases: ["MySQL", "MongoDB", "SQLite", "PostgreSQL", "Redis"],
        misc: ["REST APIs", "WebSockets", "Cloud Functions"],
        generativeAI: ["GPTs", "Ollama" , "ComfyUI"],
    },
    architecture: {
        frontEnd: ["SPA", "SSR"],
        backEnd: ["microservices", "monolithic", "serverless"],
        devOps: ["CloudFormation", "Serverless Framework"],
        databases: ["Relational", "NoSQL", "In-memory"],
    },
    currentFocus: "Leading a way in generative AI innovation",
    funFact: "I can debug faster with a tea in hand!"
};

I love connecting with different people so if you want to say hi, I'll be happy to meet you more! ๐Ÿ˜Š

Blog posts

โณ  WakaTime Stats

Code Time

Profile Views

Lines of code

๐Ÿฑ My GitHub Data

๐Ÿ“ฆ 1.7 MB Used in GitHub's Storage

๐Ÿ† 840 Contributions in the Year 2026

๐Ÿšซ Not Opted to Hire

๐Ÿ“œ 253 Public Repositories

๐Ÿ”‘ 18 Private Repositories

I'm a Night ๐Ÿฆ‰

๐ŸŒž Morning                4549 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   16.13 % 
๐ŸŒ† Daytime                9378 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   33.24 % 
๐ŸŒƒ Evening                9490 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   33.64 % 
๐ŸŒ™ Night                  4792 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   16.99 %

๐Ÿ“… I'm Most Productive on Tuesday

Monday                   4702 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   16.67 % 
Tuesday                  4743 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   16.81 % 
Wednesday                4578 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   16.23 % 
Thursday                 4033 commits        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   14.30 % 
Friday                   3747 commits        โ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   13.28 % 
Saturday                 3048 commits        โ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   10.81 % 
Sunday                   3358 commits        โ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   11.90 %

๐Ÿ“Š This Week I Spent My Time On

๐Ÿ•‘๏ธŽ Time Zone: Asia/Shanghai

๐Ÿ’ฌ Programming Languages: 
Other                    16 hrs 13 mins      โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   30.54 % 
Markdown                 10 hrs 57 mins      โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   20.61 % 
Java                     5 hrs 32 mins       โ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   10.42 % 
JavaScript               5 hrs 16 mins       โ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   09.94 % 
C                        3 hrs 45 mins       โ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   07.06 % 

๐Ÿ”ฅ Editors: 
Chrome                   31 hrs              โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   58.34 % 
IntelliJ IDEA            8 hrs 8 mins        โ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   15.32 % 
ChatGPT                  3 hrs 18 mins       โ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   06.23 % 
iTerm2                   2 hrs 41 mins       โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   05.05 % 
VS Code                  2 hrs 17 mins       โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   04.31 % 

๐Ÿ’ป Operating System: 
Mac                      53 hrs 9 mins       โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ   100.00 %

I Mostly Code in Java

Java                     35 repos            โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   42.17 % 
JavaScript               11 repos            โ–ˆโ–ˆโ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   13.25 % 
TypeScript               4 repos             โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   04.82 % 
MDX                      3 repos             โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   03.61 % 
Kotlin                   2 repos             โ–ˆโ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘โ–‘   02.41 %

Timeline

Lines of Code chart

Last Updated on 19/04/2026 03:14:03 UTC

These Readme stats are generated using Github Action awesome-readme-stats

NOTE: Top languages does not indicate my skill level or anything like that. It is just a metric of which languages have been hosted by me on GitHub based on the usage across repositories. There are others which I haven't put up on GitHub.

ใ€ฝ๏ธ  GitHub Stats

dong4j's Github Stats dong4j's Top Langs

๐Ÿ› ๏ธ  Languages and Tools

Visitor count

Show some โค๏ธ by starring some of the repositories!

๐ŸŒฑ Learning all about Open Source

โญ๏ธ From dong4j