Core Banking Domain Modeling: CIF, CASA & Lending Guide

Answer-First: Core banking domain architecture revolves around three sub-systems: Customer Information File (CIF) for identity and KYC, Current & Savings Accounts (CASA) for real-time deposit ledgers, and Lending for loan amortization. Isolating these bounded contexts in Go microservices prevents cascading database lock contention during End-of-Day interest calculation batch jobs. Prerequisite: Part 1: Double-Entry Ledger Schema Design on standard accounting invariants. Overview of the Three Core Modules Answer-First: The three foundational core banking modules are Customer Information File (CIF), CASA deposit accounts, and Lending credit operations. ...

May 6, 2026 · 13 min · Lê Tuấn Anh