Shubh Patel

@UCn56rY__NZRmCZVLIOsFI6g - 7.9K subscribers

Making software engineering fun and easy for all.

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Proxy Deep Dive | Forward & Reverse Proxy Explained – System Design

Proxy Deep Dive | Forward & Reverse Proxy Explained – System Design Shubh Patel

832 views - 5 days ago

Ultimate Spring Boot Course 2026 (with 3 Real Projects)

Ultimate Spring Boot Course 2026 (with 3 Real Projects) Shubh Patel

1.6K views - 1 week ago

API Gateway Deep Dive: Routing, Auth, Rate Limiting, Caching & More

API Gateway Deep Dive: Routing, Auth, Rate Limiting, Caching & More Shubh Patel

3.6K views - 1 week ago

Multi-Leader Replication in Distributed Systems | Complete Beginner Guide

Multi-Leader Replication in Distributed Systems | Complete Beginner Guide Shubh Patel

432 views - 3 weeks ago

Single Leader Replication in Distributed Systems | Complete Beginner to Advanced Guide

Single Leader Replication in Distributed Systems | Complete Beginner to Advanced Guide Shubh Patel

606 views - 4 weeks ago

CDN Explained in 15 Minutes | Caching, Cache Invalidation & Edge Servers

CDN Explained in 15 Minutes | Caching, Cache Invalidation & Edge Servers Shubh Patel

571 views - 1 month ago

Understand Consistent Hashing in 10 Minutes | Modulo Hashing to Virtual Nodes

Understand Consistent Hashing in 10 Minutes | Modulo Hashing to Virtual Nodes Shubh Patel

326 views - 1 month ago

Database Sharding: Shard Keys, Strategies & Challenges

Database Sharding: Shard Keys, Strategies & Challenges Shubh Patel

1.1K views - 1 month ago

The Secret Behind Database Durability: Write-Ahead Logging (WAL)

The Secret Behind Database Durability: Write-Ahead Logging (WAL) Shubh Patel

301 views - 1 month ago

How Does PostgreSQL Use MVCC and Locks in Read Committed?

How Does PostgreSQL Use MVCC and Locks in Read Committed? Shubh Patel

536 views - 2 months ago

Pessimistic Concurrency Control | 2PL, Deadlocks & Cascading Aborts

Pessimistic Concurrency Control | 2PL, Deadlocks & Cascading Aborts Shubh Patel

420 views - 2 months ago

Database Isolation Levels Explained (Dirty, Phantom, Lost Update) | With Example

Database Isolation Levels Explained (Dirty, Phantom, Lost Update) | With Example Shubh Patel

650 views - 2 months ago

ACID in Databases — The Only Explanation You Need

ACID in Databases — The Only Explanation You Need Shubh Patel

569 views - 2 months ago

Stop Using the Wrong Database Index (B+ Tree, Geohashing, Inverted Explained)

Stop Using the Wrong Database Index (B+ Tree, Geohashing, Inverted Explained) Shubh Patel

750 views - 2 months ago

Database Fundamentals in 9 Minutes (Disk, Pages, Indexing)

Database Fundamentals in 9 Minutes (Disk, Pages, Indexing) Shubh Patel

1.5K views - 2 months ago

Distributed Databases – Struggling with System Design? Watch This

Distributed Databases – Struggling with System Design? Watch This Shubh Patel

2.1K views - 2 months ago

Short Polling vs Long Polling Explained (with Real Examples!) | System Design

Short Polling vs Long Polling Explained (with Real Examples!) | System Design Shubh Patel

1.4K views - 8 months ago

Load Balancer in System Design Interviews | L4 vs L7 Explained + Load Balancing Algorithms

Load Balancer in System Design Interviews | L4 vs L7 Explained + Load Balancing Algorithms Shubh Patel

4.5K views - 8 months ago

Design Rate Limiter (LLD) - Token Bucket, Fixed & Sliding Window with Thread Safety

Design Rate Limiter (LLD) - Token Bucket, Fixed & Sliding Window with Thread Safety Shubh Patel

75K views - 9 months ago

Design Amazon Locker System (LLD) | Package Delivery & Pickup Flow with OTP Verification

Design Amazon Locker System (LLD) | Package Delivery & Pickup Flow with OTP Verification Shubh Patel

8.9K views - 10 months ago

Design ATM Machine (LLD) | Cash Withdrawal Flow | State + COR Pattern

Design ATM Machine (LLD) | Cash Withdrawal Flow | State + COR Pattern Shubh Patel

9.1K views - 10 months ago

Design Uber (LLD) - Fare Calculation, Driver Matching, Real-time ETA, GeoHashing

Design Uber (LLD) - Fare Calculation, Driver Matching, Real-time ETA, GeoHashing Shubh Patel

6.9K views - 11 months ago

PhonePe Machine Coding Round: Customer Issue Resolution System (LLD + Code)

PhonePe Machine Coding Round: Customer Issue Resolution System (LLD + Code) Shubh Patel

3.7K views - 11 months ago

I Solved BookMyShow Seat Clash! Full LLD + Lock Expiry + Why Redis is Must

I Solved BookMyShow Seat Clash! Full LLD + Lock Expiry + Why Redis is Must Shubh Patel

15K views - 11 months ago

Splitwise Low Level Design (LLD) Java | Simplify Debts Algorithm, Strategy Pattern & Code

Splitwise Low Level Design (LLD) Java | Simplify Debts Algorithm, Strategy Pattern & Code Shubh Patel

8.9K views - 1 year ago

Flipkart Machine Coding Round: FlipMed | LLD + Code Walkthrough

Flipkart Machine Coding Round: FlipMed | LLD + Code Walkthrough Shubh Patel

4.4K views - 1 year ago

Logger System LLD in Java | UML, Concurrency & Design Patterns Explained 📝

Logger System LLD in Java | UML, Concurrency & Design Patterns Explained 📝 Shubh Patel

11K views - 1 year ago

Min & Max Median Among K-Length Subsequences | Amazon OA May 2025 | DSA Explained

Min & Max Median Among K-Length Subsequences | Amazon OA May 2025 | DSA Explained Shubh Patel

2.2K views - 1 year ago

Chess Game LLD in Java | UML, Move Strategies & Code Explained ♟️

Chess Game LLD in Java | UML, Move Strategies & Code Explained ♟️ Shubh Patel

3.5K views - 1 year ago

Car Rental System | Low Level Design | UML + Concurrency + Java Code Walkthrough

Car Rental System | Low Level Design | UML + Concurrency + Java Code Walkthrough Shubh Patel

4.2K views - 1 year ago

Snakes and Ladders LLD in Java | UML, Extensible Design & Code Explained

Snakes and Ladders LLD in Java | UML, Extensible Design & Code Explained Shubh Patel

4.6K views - 1 year ago

Design Parking Lot | Low Level Design (LLD), UML, Concurrency & Code Explained

Design Parking Lot | Low Level Design (LLD), UML, Concurrency & Code Explained Shubh Patel

26K views - 1 year ago

Facade Design Pattern in Java Explained | Example, UML & Code

Facade Design Pattern in Java Explained | Example, UML & Code Shubh Patel

2.2K views - 1 year ago

Proxy Design Pattern in Java - Explained with UML, Real World Use Case & Code

Proxy Design Pattern in Java - Explained with UML, Real World Use Case & Code Shubh Patel

1.7K views - 1 year ago

Chain of Responsibility Design Pattern Java 🔗 | Explained with Real Examples

Chain of Responsibility Design Pattern Java 🔗 | Explained with Real Examples Shubh Patel

2.2K views - 1 year ago

Adapter Design Pattern in Java Explained - How to Handle 3rd Party APIs & Legacy Code (UML + Code)

Adapter Design Pattern in Java Explained - How to Handle 3rd Party APIs & Legacy Code (UML + Code) Shubh Patel

1.8K views - 1 year ago

Strategy Design Pattern in Java – Explained with Real World Examples & Use Cases - Payments & Game

Strategy Design Pattern in Java – Explained with Real World Examples & Use Cases - Payments & Game Shubh Patel

2.5K views - 1 year ago

Builder Design Pattern in Java 🧱 | Real Life Example Explained

Builder Design Pattern in Java 🧱 | Real Life Example Explained Shubh Patel

2.4K views - 1 year ago

Factory Design Pattern in Java 🏭 | Real Life Example Explained

Factory Design Pattern in Java 🏭 | Real Life Example Explained Shubh Patel

2.5K views - 1 year ago

Singleton Design Pattern in Java 🚀 | Real-World Example + Multithreading Explained

Singleton Design Pattern in Java 🚀 | Real-World Example + Multithreading Explained Shubh Patel

3.1K views - 1 year ago

Master Dependency Inversion Principle (DIP) with Real Examples | SOLID Principles Made Simple

Master Dependency Inversion Principle (DIP) with Real Examples | SOLID Principles Made Simple Shubh Patel

2K views - 1 year ago

Interface Segregation Principle in Java 🔍 | SOLID Principle Explained Clearly | Laarn LSP vs ISP

Interface Segregation Principle in Java 🔍 | SOLID Principle Explained Clearly | Laarn LSP vs ISP Shubh Patel

1.6K views - 1 year ago

Liskov Substitution Principle in Java 🔁 | SOLID Principles Simplified

Liskov Substitution Principle in Java 🔁 | SOLID Principles Simplified Shubh Patel

2.5K views - 1 year ago

Open Closed Principle in Java 💡 | Real-Life Example + Clean Code Guide

Open Closed Principle in Java 💡 | Real-Life Example + Clean Code Guide Shubh Patel

2.1K views - 1 year ago

Single Responsibility Principle in Java 🔥 | Master SRP with Real-World Example

Single Responsibility Principle in Java 🔥 | Master SRP with Real-World Example Shubh Patel

3K views - 1 year ago

Longest Threshold Breaking Subarray | Amazon OA | Stack | Similar to LeetCode 84

Longest Threshold Breaking Subarray | Amazon OA | Stack | Similar to LeetCode 84 Shubh Patel

436 views - 1 year ago

Design Heap Data Structure from Scratch In JAVA | Master the Design for Interviews 🚀

Design Heap Data Structure from Scratch In JAVA | Master the Design for Interviews 🚀 Shubh Patel

1.8K views - 1 year ago

Design HashMap from Scratch in JAVA | Hashing, Collision Handling, Load Factor & Code Walkthrough

Design HashMap from Scratch in JAVA | Hashing, Collision Handling, Load Factor & Code Walkthrough Shubh Patel

5.6K views - 1 year ago

Maximize Negative Elements | Amazon OA 2024 | Hard Heap-Based DSA Problem

Maximize Negative Elements | Amazon OA 2024 | Hard Heap-Based DSA Problem Shubh Patel

341 views - 1 year ago

Total Number of Warehouses | Amazon OA 2024 | Easy Math-Based DSA Problem

Total Number of Warehouses | Amazon OA 2024 | Easy Math-Based DSA Problem Shubh Patel

674 views - 1 year ago

Maximize Number of Zeroes | Amazon OA 2024 | Must-Know DSA Problem

Maximize Number of Zeroes | Amazon OA 2024 | Must-Know DSA Problem Shubh Patel

1K views - 1 year ago

Length of Longest Consecutive Ones | Amazon OA DSA Question | Optimized Solution

Length of Longest Consecutive Ones | Amazon OA DSA Question | Optimized Solution Shubh Patel

222 views - 1 year ago

Weighted Sum of Given Range | Atlassian Interview Question | Prefix Sum Variation

Weighted Sum of Given Range | Atlassian Interview Question | Prefix Sum Variation Shubh Patel

168 views - 1 year ago

Count Sweet Water Lakes In Island | Google Interview Prep | DSA Problem Solved

Count Sweet Water Lakes In Island | Google Interview Prep | DSA Problem Solved Shubh Patel

551 views - 1 year ago

Minimum Weighted Subgraph With the Required Paths | Google Phone Screen | Graph & BFS Solution

Minimum Weighted Subgraph With the Required Paths | Google Phone Screen | Graph & BFS Solution Shubh Patel

524 views - 1 year ago

Maximum Sum Among All Rotations | Uber Interview DSA Problem

Maximum Sum Among All Rotations | Uber Interview DSA Problem Shubh Patel

200 views - 1 year ago

Maximum Sum Subarray Variation | Google Interview Question | DSA Problem Solved

Maximum Sum Subarray Variation | Google Interview Question | DSA Problem Solved Shubh Patel

239 views - 1 year ago

Minimum Operations to Make Array Elements Zero | Amazon OA | Jan 2025

Minimum Operations to Make Array Elements Zero | Amazon OA | Jan 2025 Shubh Patel

1K views - 1 year ago