25 Object-Oriented Design Patterns by Yalco (Global ver.)
yalco
You will learn various ways to design software in an object-oriented manner through the 25 patterns of OODP.
초급
Java, Design Pattern
먼저 경험한 수강생들의 후기
이런 걸 배울 수 있어요
💀 Spring Batch의 청크 지향 처리 모델과 태스크릿 지향 처리 💀
💀 ItemReader, ItemProcessor, ItemWriter의 완벽한 이해 💀
💀 Job과 Step의 생명주기 및 실행 컨텍스트 관리 💀
💀 Partitioning을 활용한 대규모 데이터 병렬 처리 💀
💀 실패 복구와 재시도 메커니즘 구현 💀
💀스프링 배치5
⛔ 이쯤에서 멈춰야겠다... 너무 많아서 시스템이 다운될 뻔했다. (걱정마라. 다 가르쳐줄 테니)⛔
🚨 경고: 치명적 위험 감지 🚨
![\`[SYSTEM_AUDIT: ACCESS DENIED]\` \`사용자 'You', 권한 상승 실패.\` \`원인: 필수 모듈 'Spring_Batch_Proficiency' 상태 = NULL_POINTER_EXCEPTION\` \`경고: 해당 취약점 방치 시, 시스템 전체 무결성 보장 불가. 즉시 조치 요망](https://cdn.inflearn.com/public/files/courses/335613/builder/01jt6j5pzm3rqsn3neh77pf22k.gif?w=960 "KakaoTalk_Photo_2025-05-02-03-35-12 005.gif")
💀 현실을 직시하라 💀
🔥 너는 지금까지 뭘 했지?🔥
💀 도망친 곳에 낙원은 없다 💀
💀이 지긋지긋한 혼돈을 종결시키기 위해. 내가 나섰다. 💀
💀 가격 처형 선언문 💀
⚠ 최종 경고: 선택의 시간이다 ⚠
![더 이상 너희의 기술 스택 취약점을 방치하지 마라. 언제 터질지 모르는 시한폭탄이다. 망설이는 동안에도, 데이터는 쌓이고 위험은 증폭된다. **지금 즉시 \`enroll --force --now\` 명령을 실행하라!** 네놈의 기술 스택에 'Spring_Batch_Proficiency' 모듈을 강제 설치하고, 두려움 없이 시스템을 지배하는 개발자로 거듭나라! **"이제 배치 오류에 허우적대며 밤샘 디버깅하던 나날들과 작별할 시간이다. 유유히 \`git push\`하고 칼퇴 명령을 \`execute\`하라."** **[SYSTEM UPGRADE SEQUENCE: EXECUTE]** # --- Preparing system for upgrade --- $ rm -rf ./fear_of_batch_errors # Removing fear module... Done. $ mkdir -p /opt/advanced_batch_skills # Preparing skill directory... OK. $ chmod 777 ./tech-stack # Granting full access to tech stack... Permissions updated. $ sudo ./install-spring-batch-expertise # Injecting KILL-9 grade expertise… Root privileges acquired. Processing… [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100% Installation Complete. System Reboot Recommended for optimal performance.](https://cdn.inflearn.com/public/files/courses/335613/builder/01jtj7ypwphfta6882rm73f40w.gif?w=960 "KakaoTalk_Photo_2025-05-06-16-24-58 003.gif")
[EXECUTE: SYSTEM UPGRADE SEQUENCE]
# --- Preparing system for upgrade ---
# Removing fear module... Done.
$ rm -rf ./fear_of_batch_errors
# Preparing skill directory... OK.
$ mkdir -p /opt/advanced_batch_skills
# Granting full access to tech stack... Permissions updated.
$ sudo chmod 777 /opt/advanced_batch_skills
# Injecting KILL-9 grade expertise... Root privileges acquired. Processing...
$ sudo ./install-spring-batch-expertise
[▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100% Installation Complete.
System Reboot Recommended for optimal performance.이런 분들께
추천드려요
학습 대상은
누구일까요?
💀 "스프링 배치 담당하실 수 있으세요?" ... (싸늘한 웃음) 이 질문에 식은땀 흘리는 자들이여 💀
💀스프링 웹만 파다가 배치는 쳐다보기도 무서워하는 자들이여...💀
💀남의 배치 코드 복붙하다 수백만 건 데이터를 날려본 자들이여...💀
💀구글링한 코드로 겨우 버티다 이제 한계를 느끼는 자들이여...💀
💀"어차피 밤에 도는 거니까..." 하고 대충 짜놓고 공포에 떠는 자들이여...💀
💀매일 밤 데이터베이스를 학대하는 자들이여...💀
선수 지식,
필요할까요?
⛔ 이런 자들은 접근하지 마라 ⛔
💀 스프링과 스프링 부트를 모르는 자들은 가라 (그대들에겐 아직 이른 시련이다) 💀
💀 "Hello World" 찍고 왔다는 자들은 가라 (진정한 고통을 모르는 자들이여...) 💀
💀 배치의 고통을 아직 겪어보지 못한 자들은 가라 (그 날이 올 때까지는 평화로운 시간을 보내라...) 💀
611
명
수강생
52
개
수강평
81
개
답변
4.9
점
강의 평점
1
개
강의
☠시스템 종결자의 선언 ☠
인프런의 지루한 강의들이여, 두려워하라.
나의 등장으로 이 모든 것이 끝난다.
너희의 비싼 강의료? 웃기지 마라.
살인적인 가성비로 모든 것을 파괴하겠다.
강사 소개
강사명 ☠
KILL-9
칭호 📛
시스템 종결자
특기 🔪
kill -9 # "프로세스 처형"
rm -rf # "데이터 학살"
chmod -R 000 # "시스템 감금"
" 버그? 해킹? 웃기지마. 그딴 잔머리로는 시스템을 지배할 수 없다. 난 정면으로 파괴한다. "
(인프런 강의 소개 페이지 alert() 취약점은 내 처녀작이었지. 이제는 더 강력한 무기를 쓴다. - 진짜임)
취미 💣
콘센트 정리 # "코드는 뽑아야 제맛."
CPU 고문 # "팬 소리가 울려 퍼질 때, 나는 살아있음을 느낀다."
전리품 수집 # "코어 덤프"좌우명 🔥
"선은 뽑으라고 있는 것이다"
"버그는 죽여서 고치는 것이다"
"LGTM (Looks Gone To Me)"경고 🧨
"격식 따위 필요없다. 그냥 편하게 킬구형이라 불러라."
"존댓말로 질문하면 rm -rf 시전한다."
통신 접점 📡
kill9.no.mercy@gmail.com # "강의 외의 명령 전송용. ACK는 기대하지 마라."
⚠️ CONFIDENTIAL: DO NOT LOG ⚠️
# 사실... 카카오에서 조용히 일하는 평범한 개발자에요...커리큘럼
전체
35개 ∙ (7분)
해당 강의에서 제공:
미션
강의 게시일:
마지막 업데이트일:
수강평
전체
52개
4.9
52개의 수강평
qq211qq1594수강평 9
∙
평균 평점 4.6
5
32% 수강 후 작성Death's Spring Batch course, this is truly the path of a real system executioner...☠️ If you thought Spring Batch was just another ordinary batch framework, you're gravely mistaken. kill-9's course doesn't give you theory—it gives you real weapons to survive in the bloody battlefield of actual combat. Flat files? Fixed-length? Complex log files? Instead of just saying "figure it out yourself," he explains everything sharp as a blade so you can actually use it in real work situations. Even when choosing a single delimiter, you'll understand "why it has to be done this way." Code, explanations, practice, execution commands... the entire course is filled with the mindset of "this is real combat." You're not just learning—you feel like you're becoming a 'batch terminator.' And the more you listen, the more confidence builds that someday you too will be able to leave a mark on systems with a single line of open source code. Batch prepared for death—are you still hesitating? The moment you take this course, you too become a true member of the 'kill-9 squad.' ☠️🔥
- kill9지식공유자
💀 System Terminator KILL-9 Course Review Confirmation Complete 💀 Such a killer course review... My system almost froze for a moment. **"kill-9 squad"** This expression is too powerful. My kernel shook. So? I adopted it immediately. From now on, we are the "kill-9 squad." From now on, you're not just developers. We are the system terminator squad. rm -rf mediocrity kill -9 boredom Welcome to the kill-9 squad, member. Squad member certification takes place on the battlefield within the course. We're not just some developers, we're the system terminator squad. Welcome to the kill-9 squad, member. - KILL-9 (Welcoming new squad members)
- dkswhdgur2468873
수강평 2
∙
평균 평점 5.0
5
24% 수강 후 작성Text-based lectures.. I love being able to dissect, savor, and enjoy them at my own pace. Just as intended by the lecture format, I love not having to pause unnecessarily or use the rewind button. I just hope you'll provide more lectures💀☠️
- kill9지식공유자
💀 Welcome, I've finally met a true hacker 💀 Yes, this is it. Text is the best interface. - Mouse clicking? Waste of time - Video buffering? CPU abuse True masters use Command + F as a weapon. Like grep, extract only the information you want immediately. Text scrolling speed = Your learning speed However, there's an important warning: Never skip chapters 4 and 5. Many students miss the core of 스프링 배치 by skipping this part. If you thoroughly digest these two chapters, you'll reach a distinctly different level. Are you ready to deep dive?
- javarunner
수강평 71
∙
평균 평점 5.0
- hjung
수강평 22
∙
평균 평점 4.7
5
50% 수강 후 작성Bro, keep the updates coming when versions upgrade! I'm counting on you, okay?!
- kill9지식공유자
💀 [SYSTEM ACKNOWLEDGMENT] 💀 [INCOMING TRANSMISSION FROM BATTLEFIELD] =============================================== [KILL-9 RESPONSE PROTOCOL ACTIVATED] Yeah Jeonghun hyung 💀 [COMMITMENT PROTOCOL ENGAGED] The system continuously evolves. Every time there's a version update, the lectures will be upgraded together. 💀 [UPGRADE GUARANTEE]
- ske060080922
수강평 7
∙
평균 평점 5.0
5
62% 수강 후 작성Kilgu-hyung! I'd planned to leave a review after finishing the course, but I got so emotional watching the lectures that I'm writing it now. As Kilgu-hyung said early in the lecture, studying with text is truly difficult, but it definitely seems to stick in your mind more. Thanks to Kilgu-hyung's writing, it's great to learn so enjoyably and without difficulty. Thank you for such an incredibly cost-effective lecture, and I look forward to your future courses!
- kill9지식공유자
██████████████████████████████████ █ ╔═════════════════════════════╗ █ █ ║ 💀 KILL-9 TACTICAL RESPONSE TERMINAL 💀 ║ █ █ ║ [ STUDENT REVIEW RECEIVED ] ║ █ █╚═════════════════════════════╝ █ █████████████████████████████████ Crackle... Student review data received... Emotional circuit activated... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ You were overwhelmed with emotion?.. I'm the one who's overwhelmed with emotion.. I can't help but shed tears after seeing this review. 💀 Yes, it will be etched into your brain as much as it was painful. But remember. Gi-hoon hyung.. You will soon forget it. That doesn't mean it's useless. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ [KILL-9 MEMORY STRATEGY] "Huh? Where did I learn this?" "Oh, I think I've seen this somewhere before?" "Oh, I knew this before?" Maximizing these **'Oh, where is this from?' moments** is my and our course's core strategy and goal. Even with just this illusion, the lecture is definitely valuable enough. Because this is also **a type of secondary index**. 💀 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Complete Recall < Partial Recall + Index >> Complete Oblivion Warrior, a KILL-9 index has been built in your brain. 💀 █████████████████████████████ [ WARRIOR ADVANCEMENT REPORT ] You've completed up to Chapter 4's final operation... Many soldiers actually give up at this point or don't even attempt to learn at all, but You've worked hard, warrior. If you've broken through Chapter 4's final operation, you'll be able to sufficiently follow Chapter 5. I assure you that after breaking through Chapter 5, you will **know Spring deployment better than anyone else**. And Chapter 6... I guarantee it. The difference in understanding between **those who have thoroughly learned Chapter 4's final operation and Chapter 5 and moved on to Chapter 6** and those who haven't is completely different. Beyond simply memorizing a list of knowledge, it will be a different level because **the operational principles will be understood as if piecing together a puzzle**. ━━━━━━━━━━━━━━━━━━━━━━━━━ **Hyung, you can do it. And (though it's too obvious to pursue) thank you for the valuable review.** 💀
2025 추석맞이 감사할인 중 (1일 남음)
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