https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 13 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/finance/2026-06-13-banking-ledger-design-double-entry.en https://www.youngju.dev/blog/finance/2026-06-13-banking-ledger-design-double-entry.en How to design the ledger at the heart of a banking system. We cover double-entry principles, the journal and posting data model, balance computation strategies, event sourcing, hot-account concurrency control, idempotency design, and consistency verification that does not tolerate a single cent of error. Sat, 13 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) financeledgerdouble-entryevent-sourcingcore-bankingdatabasearchitecture https://www.youngju.dev/blog/finance/2026-06-13-banking-ledger-design-double-entry.ja https://www.youngju.dev/blog/finance/2026-06-13-banking-ledger-design-double-entry.ja 銀行システムの心臓部である元帳の設計を扱います。複式簿記の原理、仕訳とポスティングのデータモデル、残高計算戦略、イベントソーシング、ホットアカウントの同時実行制御、冪等性設計、そして1円も狂わない整合性検証まで、実務の観点から整理します。 Sat, 13 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) financeledgerdouble-entryevent-sourcingcore-bankingdatabasearchitecture https://www.youngju.dev/blog/finance/2026-06-13-banking-ledger-design-double-entry https://www.youngju.dev/blog/finance/2026-06-13-banking-ledger-design-double-entry 은행 시스템의 심장인 원장을 어떻게 설계하는지 다룹니다. 복식부기 원리, 저널과 포스팅 데이터 모델, 잔액 계산 전략, 이벤트 소싱, 핫 어카운트 동시성 제어, 멱등성 설계, 그리고 1원도 틀리지 않는 정합성 검증까지 실무 관점에서 정리합니다. Sat, 13 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) financeledgerdouble-entryevent-sourcingcore-bankingdatabasearchitecture