woowacourse-teams/2025-ah-madda
Jul 2025 – Nov 2025
5 Months active
Languages Used
DockerfileGradleHTMLJavaJavaScriptSQLShellYAML
Technical Skills
API DesignAPI DevelopmentAPI DocumentationAuthenticationAuthorizationAutomation
jeyong
PROFILE
Jeyong
Over five months, contributed to the woowacourse-teams/2025-ah-madda repository by delivering robust backend features and infrastructure improvements focused on reliability, scalability, and developer experience. Built and enhanced RESTful APIs for guest management, notifications, and authentication, integrating technologies such as Spring Boot, Java, and Docker. Applied domain-driven design and refactored core modules for maintainability, while implementing observability with CloudWatch and Micrometer. Migrated email delivery to AWS SES with Gmail fallback, optimized database performance, and introduced rate limiting and resilience patterns. Modernized deployment pipelines with Docker, reduced cloud vendor dependency, and aligned development environments to streamline testing and accelerate production releases.
Overall Statistics
Feature vs Bugs
72%Features
Repository Contributions
128Total
Bugs
28
Commits
128
Features
73
Lines of code
27,203
Activity Months5
Your Network
1135 peopleShared Repositories
4
Work History
November 2025
3 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary: Delivered infrastructure modernization and Docker-based deployment for 2025-ah-madda, migrating away from AWS to a containerized, self-contained deployment pipeline. Aligned local development and production DB configurations to reduce environment drift and accelerate testing. Fixed critical deployment issues to stabilize production: corrected port mapping and enabled JwtAccessTokenProperties to fix the JWT authentication flow. These changes reduce cloud vendor dependency, improve deployment reproducibility, security, and overall service reliability.
3 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary: Delivered infrastructure modernization and Docker-based deployment for 2025-ah-madda, migrating away from AWS to a containerized, self-contained deployment pipeline. Aligned local development and production DB configurations to reduce environment drift and accelerate testing. Fixed critical deployment issues to stabilize production: corrected port mapping and enabled JwtAccessTokenProperties to fix the JWT authentication flow. These changes reduce cloud vendor dependency, improve deployment reproducibility, security, and overall service reliability.
November 2025
October 2025
26 Commits • 16 Features
Oct 1, 20252025-10 월간 요약: 이번 달은 시스템 가용성과 확장성 강화, 데이터 처리 안정성 향상, 운영 효율성 개선을 목표로 핵심 인프라 및 도메인 개선과 버그 수정을 폭넓게 수행했습니다. 데이터베이스 다중화 설정 및 구성 개선, 리마인더 이메일 발송 상태 저장 및 재전송 기능 도입, 리마인더/푸시 발송 트랜잭션 경계 개선, 그룹 기반 비게스트 조회 기능 추가, 미사용 메서드 제거 및 컨벤션 준수 등 주요 기능을 완료했습니다. 주요 버그 수정으로는 메일 설정의 Bean 중복 등록 문제 해결, N+1 문제 최적화, FCM 웹푸시 중복 알림 해결, 이벤트 조회 인가 로직 제거, EmailOutbox 중복 생성으로 인한 NonUniqueResultException 해결 등을 수행했습니다. 이로써 데이터 신뢰성 및 성능이 향상되고, 비회원 로그인 지원, 인프라 구조 개선, 테스트 속도 증가 등 비즈니스 가치가 크게 개선되었습니다. 기술적으로는 Spring 기반 아키텍처의 Ports & Adapters 도입 및 SPI 분리, ThreadPoolTaskExecutor/Scheduler 설정 강화와 graceful shutdown 고려, Token Bucket 방식의 요청 제한 도입, Gmail 전송 한도 관리 로직 개선, 코드 품질 및 공통 설정의 레이어화, 테스트 컨텍스트 재로딩 최적화, 문서 업데이트 및 코드배포 구조 개선 등을 수행했습니다.
October 2025
26 Commits • 16 Features
Oct 1, 20252025-10 월간 요약: 이번 달은 시스템 가용성과 확장성 강화, 데이터 처리 안정성 향상, 운영 효율성 개선을 목표로 핵심 인프라 및 도메인 개선과 버그 수정을 폭넓게 수행했습니다. 데이터베이스 다중화 설정 및 구성 개선, 리마인더 이메일 발송 상태 저장 및 재전송 기능 도입, 리마인더/푸시 발송 트랜잭션 경계 개선, 그룹 기반 비게스트 조회 기능 추가, 미사용 메서드 제거 및 컨벤션 준수 등 주요 기능을 완료했습니다. 주요 버그 수정으로는 메일 설정의 Bean 중복 등록 문제 해결, N+1 문제 최적화, FCM 웹푸시 중복 알림 해결, 이벤트 조회 인가 로직 제거, EmailOutbox 중복 생성으로 인한 NonUniqueResultException 해결 등을 수행했습니다. 이로써 데이터 신뢰성 및 성능이 향상되고, 비회원 로그인 지원, 인프라 구조 개선, 테스트 속도 증가 등 비즈니스 가치가 크게 개선되었습니다. 기술적으로는 Spring 기반 아키텍처의 Ports & Adapters 도입 및 SPI 분리, ThreadPoolTaskExecutor/Scheduler 설정 강화와 graceful shutdown 고려, Token Bucket 방식의 요청 제한 도입, Gmail 전송 한도 관리 로직 개선, 코드 품질 및 공통 설정의 레이어화, 테스트 컨텍스트 재로딩 최적화, 문서 업데이트 및 코드배포 구조 개선 등을 수행했습니다.
September 2025
31 Commits • 19 Features
Sep 1, 2025Concise monthly performance summary for 2025-09 covering the woowacourse-teams/2025-ah-madda repo. Emphasizes reliability, performance, admin capabilities, UX clarity, and observability enhancements. Highlights delivered features, notable fixes, and the technical skills demonstrated that drive business value.
31 Commits • 19 Features
Sep 1, 2025Concise monthly performance summary for 2025-09 covering the woowacourse-teams/2025-ah-madda repo. Emphasizes reliability, performance, admin capabilities, UX clarity, and observability enhancements. Highlights delivered features, notable fixes, and the technical skills demonstrated that drive business value.
September 2025
August 2025
43 Commits • 22 Features
Aug 1, 2025Monthly summary for 2025-08 (woowacourse-teams/2025-ah-madda): Backend delivery focused on reliability, engagement, and operational resilience. Notable outcomes include: 1) FCM push notifications integrated with an idempotent Registration Token API, enabling reliable user engagement at scale; 2) Comprehensive event notification enhancements, delivering 24-hour and 30-minute reminders with per-user opt-out and content validation, improving user experience and compliance; 3) Safety- and intent-focused refactor improving code safety, readability, and maintainability; 4) Observability enhancements with MDC context propagation and Micrometer-based event metrics integrated with CloudWatch, boosting incident response and performance visibility; 5) Production readiness improvements including rollback workflows and production DB changes to support safer releases. Additionally, stabilizing fixes addressed Swagger CORS, lazy loading behavior, and intermittent deployment reliability to strengthen overall platform stability.
August 2025
43 Commits • 22 Features
Aug 1, 2025Monthly summary for 2025-08 (woowacourse-teams/2025-ah-madda): Backend delivery focused on reliability, engagement, and operational resilience. Notable outcomes include: 1) FCM push notifications integrated with an idempotent Registration Token API, enabling reliable user engagement at scale; 2) Comprehensive event notification enhancements, delivering 24-hour and 30-minute reminders with per-user opt-out and content validation, improving user experience and compliance; 3) Safety- and intent-focused refactor improving code safety, readability, and maintainability; 4) Observability enhancements with MDC context propagation and Micrometer-based event metrics integrated with CloudWatch, boosting incident response and performance visibility; 5) Production readiness improvements including rollback workflows and production DB changes to support safer releases. Additionally, stabilizing fixes addressed Swagger CORS, lazy loading behavior, and intermittent deployment reliability to strengthen overall platform stability.
July 2025
25 Commits • 15 Features
Jul 1, 2025July 2025 performance summary for woowacourse-teams/2025-ah-madda: Delivered a targeted set of backend, devops, and API ecosystem improvements that accelerate value delivery, improve reliability, and enhance developer experience. Implemented core guest management and info APIs, introduced robust observability and deployment readiness, and expanded API discoverability through Swagger docs. Strengthened performance safeguards with JPA N+1 detection and foundational exception handling, while maintaining a strong focus on automation, notifications, and event-driven workflows.
25 Commits • 15 Features
Jul 1, 2025July 2025 performance summary for woowacourse-teams/2025-ah-madda: Delivered a targeted set of backend, devops, and API ecosystem improvements that accelerate value delivery, improve reliability, and enhance developer experience. Implemented core guest management and info APIs, introduced robust observability and deployment readiness, and expanded API discoverability through Swagger docs. Strengthened performance safeguards with JPA N+1 detection and foundational exception handling, while maintaining a strong focus on automation, notifications, and event-driven workflows.
July 2025
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Quality Metrics
Correctness88.0%
Maintainability87.8%
Architecture86.6%
Performance80.2%
AI Usage21.6%
Skills & Technologies
Programming Languages
BashDockerfileGradleHTMLJavaJavaScriptKotlinMarkdownSQLShell
Technical Skills
API DesignAPI DevelopmentAPI DocumentationAPI RefactoringAPI SecurityAPMAWS SESAspect-Oriented Programming (AOP)Asynchronous ProcessingAsynchronous ProgrammingAuthenticationAuthorizationAutomationBackend DevelopmentBucket4j
Repositories Contributed To
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