Programming is the writing contains semetic consistency about the domain story

• 👋 Hi, I’m @N0FreeLunch
• 👀 I’m interested in programming language theory, concurrency programming, beautiful code, semantic abstract
• 🌱 I’m currently learning Laravel TDD/DDD, DDD with function composition (JS), ReactJS, Golang, Agile software development
• ⭐ I’m a specialist to deal the complexity of software

1. Javascript : Regexp, DOM manipulation, FP(RamdaJS), OOP, Prototype knowledge, Webpack, event-loop/callback-queue knowledge, blocking/non-blocking, sync/async, React(Mui, rendering optimization)
2. PHP : PHP8+, OOP, RFC/Reference Analysis, Pest(Test Framework)
3. Laravel : IOC/DI, RESTful API, EloquentORM, Collection, Batch(Scheduler, Queue, Job), Middleware, Validation(+Customizing), Page Session, API session(Sanctum)/JWT/token Authentication, Event/Listner, Schema/Data Migration, DDD(Layered Architecture, Bounded Context, Ubiquitous Language, Specification Pattern)
4. AWS : EC2(ALB, Spot Instance, Auto scale), Lambda, RDS, cloudfront, cloudwatch, S3, Athena, Route53, SES/SNS, API Gateway, IAM, Elastic Cache, ECS(EC2, cloudformation), Secret Manager
5. Database : MySQL, Redis, SQLite, PostgreSQL, ERDiagram
6. Web knowledge : HTTP protocol standard, nginx(php server, proxy server, static contents server), SSL certification (let's encrypt), Web security (XSS, SQL Injection, Code/File Injection, CSRF, TLS ...), Secure coding
7. CSS : SASS, Responsive web
8. OS Environment : Linux(AMI, Ubuntu, CentOS, Debian, Alpine), OSX, WSL, Shell Script (Bash)
9. Docker : YAML, docker compose

• Python : django, gunicorn , numpy, pandas, keras, jupyter notebook, pyplot ...
• Node : Express, pm2, nodemon, VueJS, Jquery, Bootstrap ...
• Data visualization : P5, D3
• etc : wordpress, object storage

• Java, C
• capstone : Transmitting sensor data aduino necklace to smartphone in kindergarten service (Cordova mobile application processes a lot of data from BLE using JS event loop)

• School of computer information department (~ 2018.03)
• ADtech corporation 2018.06 ~ 2021.09
• PinTech corporation 2021.10 ~

• 8.x 9.x 10.x

2022 (Major task)

• Docker setting (To define auto webpack building and composer installing process with considering security and maintanace when deploy build system) (shell script, linux user and file/foler permission, composer, NVM, NodeJS, webpack)
• HTTP request/response logging system (Laravel middleware, Event/Listener, singleton pattern)
• Refactored code MC to MVC architecture structure using laravel-admin library (Layer separation, EloquentORM, interface, abstract class)
• Integrated a user payment status decision logic was separated and improved status logic with more complexity (Eloquent ORM, drawing flow chart, defining binded context)
• Made a batch process that makes zengin file used on Japan interbank payments system. (Add docker queue container, S3, MinIO, Laravel queue/scheduler, eloquentORM chunk, php file handler)
• Version upgrade overcoming the limitation of libraries (webpack:laravel-mix, sass, VanilaJS, Bootstrap, Jquery)
• Improved code to verify PCIDSS(Payment Card Industry Data Security Standard) compliance. (first verification passed)
• Made a module that controls the changes in complexity domain logic for recurring billing start condition.
• Refactored batch processes uses table/record lock to queue/job base code.
• Refactored mud-ball code to groupifided well defined domain context code and testable code.
• Refactored query builder base code to eloquentORM with the concept of specification pattern.
• Refactored incorrect migration data, incorrect seedings, incorrect rollback processes to the right way.
• PHP and Laravel version upgrade. (Laravel 5.8 to 8.x, php 7.3 to 8.1)

2023 (Major task)

• Made batch cancellation APIs and artisan commands. (artisan console, queue, job)
• Improved a batch process create Invoices and Reports using queue/job/triggered by an administrator instead of being solely batched by the scheduler. (job, queue)
• Added batch execution API for QA to test batches. (middleware that resctirct production environment, artisan console)
• Improved bulk change feature for user contract and payment status.
• Refactored the accounting file generation batch. (query builder to eloquent)
• Enhanced account payment system to use saved information when a time file is uploaded.
• Project code quality management. Production server deploy schedule management.
• Project design and task assignment considering path dependence and nudge in social psychology.
• Adoption of static analysis tools. (larastan)
• Refactored card payment system code. Adding unit test. Improving retry payment feature. (Payment API mocking, pest, writting test scenario, customize type that restrict date string, value object)
• Improved code to verify PCIDSS compliance. (customized validation)
• NodeJS and JS pacakge version upgrade (Node16 to 20 LTS)
• Improved invoices and reports for changing Japan invoice policy. (Laravel blade, Code refactor using the parial concept)
• Added parent companies management system that enables to manage child companies. (customizing library session middleware, singleton pattern)
• Created a smart login feature that allows parent accounts to login to child accounts. (customizing middleware, CSRF, dealing complex M:N relation matching logic, Api Token Login, JS OOP)

2024 (Major task)

• Created a logging feature that record deprecated syntax. (laravel logging/job, monolog libray)
• Added feature test environment. (pest, pgsql/sqlite(inmemory), model factory, fakerPHP)
• Refactored email sending logic to encapsulate domain constraints. (TDD)
• Adding end-user entry form customize feature ((env: pnpm, Vite, SWC, TS), (React: Zustand, SWR, session storage, react-router, Mui, Feature-Sliced Design), eloquent-collection/resources, CORS, Server API (TDD))
  • Create a management page to customize 100 items.
  • Add new payment status decision flow.
  • Improve initial cost issue logic.

• Script for showing advertise to media web site from AD network. Being published in media site web page advertise area. (Vanilla JS, webpack(Code Obfuscation), DOM manipulate)
• Crawling advertise sending report and monthly bill data from AD network web site. (php, nodejs, login with hacking cookie saving logic)
• Maintenance web service that site owner request advertise script. (Laravel)

• Admin service and user client service development/management/maintenance (Laravel, Vue2, vue-router, JWT)
• API server development/management/maintenance (Gin framework, connection pool, EC2)
• Batch server management/maintenance (AWS Lambda)
• Serving server management/maintenance (Gin framework, connection pool, EC2, auto scale, Spot instance)

• Video service web site management/maintenance (30~40TB/month traffic video contents server, 30~50GB/month web page traffic server with Laravel)

• Listing and showing similar clothes with clothes picture using artificial intelligent API in EC site. (Vanilla JS, webpack, SASS, FP, DOM manipulate, IE compatibility, CoreJS, Babel-polyfill)

• In-house web system (Domain group and domain layer design, EC2, SASS, Laravel Santurm (session authenticate protocol with ajax), Query result caching, ReactJS)

• Static web site A (Laravel, AWS EC2, SASS, AWS lambda, AWS SES), B (ReactJS, Nginx, Google App script)

• OS Migration : AMI -> AMI2 (with AWS Graviton)
• Making recoverable servers with saving built server to EBS
• Making server application building process with EC2 instance user data script
• Applying SSL to outdated server with reverse proxy

• To learn modern JS (ES6+), functional abstract
• RamdaJS
• ES6 javascript
• Refactoring

• To learn OOP FP abstraction programming with PHP
• Basic php programming practice without web framework
• Design pattern
• FP

• To learn standard laravel coding style and best practice
• DDD
• practice

• To learn concurrency programming with go routine and channel
• To make superfast micro service, short latency response server, many request processing server
• To learn the reason of Golang design has different design philosophy comparing with other programming languages
• golang practice

• To understand user inteface with reactive architecture (UI = view(state or store))
• practice

• bash shell
• Nginx
• SQL
• YAML

• UI/UX-study
• Python (Django 1 2 3 4 )
• Ruby/Rails
• Java, Rx-android, android-practice
• FP lang: Elm, Scala, Haskell

• Elm : To learn functional coding architecture, understand redux principle
• Elixir : To improve pure functional programming skill. To understand actor model
• Scala : To understanding integration funtional programming and object oriented programming
• C++ : To learn avida(evolution simulator), automata theory, formal language
• Rust : To understand concurrency programming without garbage collector
• Python : To learn mathematics using programming, bioinformation, semantic information theory with machine learning, Alphafold
• Haskell : To learn mathematical logic and understand the equivalence of Turing machines and lambda calculus
• Verilog : To make a system with boolean algebra