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Design (LLD) Paytm/Phone Wallet System - Machine Coding

Subhahu JainSubhahu Jain
Sep 4, 20251 min read

Asked in Phonepe interview. Design and implement a Paytm/PhonePe Wallet System that supports multiple concurrent users performing transactions at the...

Design (LLD) Paytm/Phone Wallet System - Machine Coding

🚚 Delivery Truck Loading System Concurrency Problem

Subhahu JainSubhahu Jain
Aug 22, 20254 min read

šŸ“ Problem Setup A logistics company has multiple loading docks where workers load packages into delivery trucks. Each truck has a weight/volume...

🚚 Delivery Truck Loading System Concurrency Problem

Design (LLD) Thread Pool - Machine Coding

Subhahu JainSubhahu Jain
Aug 5, 20246 min read

Features Required: Thread Management: Fixed number of threads. Ability to execute tasks concurrently. Graceful shutdown of threads. Task...

Design (LLD) Thread Pool - Machine Coding

Design (LLD) File System - Machine Coding

Subhahu JainSubhahu Jain
Jun 22, 20242 min read

Feature Required Data Structures for Storage Management: Implementing appropriate data structures like B-trees or indexed allocation methods for...

Design (LLD) File System - Machine Coding

Design (LLD) Snake and Ladder game - Machine Coding

Subhahu JainSubhahu Jain
Dec 27, 20225 min read

A Snake and Ladder game is a board game that consists of a board with squares arranged in a grid. The board also has snakes and ladders, which are...

Design (LLD) Snake and Ladder game - Machine Coding

Design (LLD) Cricinfo - Machine Coding

Subhahu JainSubhahu Jain
Jun 24, 20226 min read

Cricinfo Cricinfo is a sports news website exclusively for the game of cricket. The site features live coverage of cricket matches containing...

Design (LLD) Cricinfo - Machine Coding

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