Low Level Design (LLD) Coding

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Low Level Design (LLD) Coding

๐Ÿฆ Bank Transaction Concurrency Problem

๐Ÿฆ Bank Transaction Concurrency Problem

Subhahu Jain's photo
Subhahu Jain
ยทJul 8, 2025ยท

2 min read

Table of contents

  • Problem Statement
  • ๐Ÿ’ก Solution Approaches
    • 1. Basic Thread-Safe Account (Synchronized Methods)
    • Key Mechanics
    • Case 1: Simple Deposit-Withdraw (No Conflict)
    • Case 2: Concurrent Deposits (Lost Update Problem Prevented)
    • Case 3: Overdraft Prevention
  • Where It Fails (Edge Cases)
    • Problem 1: Nested Operations Deadlock
    • Problem 2: Liveness Issues (Performance)
    • Problem 3: Compound Actions Not Atomic
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ยฉ2025 Low Level Design (LLD) Coding

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