DSA Patterns
Combination Sum Algorithm Solutions and Implementation Guide
Comprehensive Java solutions for combination sum problems including backtracking and dynamic programming approaches with time complexity analysis.
DSA & Fullstack System Design Interview Preparation
In-depth DSA Patterns, DSA Problems, Frontend LLD, Frontend HLD, Backend LLD, Backend HLD, and AI/ML System Design write-ups for FAANG-style interview prep.
DSA Patterns
- DSA Patterns
Subsets and Permutations Problem Solving Patterns in Java
Comprehensive guide to subset and permutation generation algorithms with iterative and recursive approaches, including time complexity analysis and practical implementation strategies.
- DSA Patterns
Finding Medians and Percentiles in Data Streams
Comprehensive guide to solving median and percentile problems using heaps, binary search, and sliding window techniques in Java.
DSA Problems
- DSA Problems
Minimum Number of Vertices to Reach All Nodes
Find the minimum set of vertices needed to reach all nodes in a directed acyclic graph using topological sorting and in-degree analysis.
- DSA Problems
Flood Fill Algorithm Implementation and Analysis
Complete Java solution for flood fill algorithm with BFS/DFS approaches, time complexity analysis, and practical implementation considerations for FAANG interviews.
- DSA Problems
Max Area of Island Java Solution
Complete Java implementation for finding maximum area of island in 2D grid using DFS and BFS approaches with time and space complexity analysis.
Frontend LLD
- Frontend LLD
Real-time Chat Application Architecture and Implementation
Comprehensive low-level design for building a scalable real-time chat system with WebSocket connections, message persistence, and user presence tracking.
- Frontend LLD
React Calculator Implementation with TypeScript and State Management
Comprehensive low-level design for a feature-rich calculator component with keyboard support, memory functions, and responsive UI.
- Frontend LLD
Todo Application Low-Level Design Implementation
Comprehensive frontend LLD for a scalable, performant Todo application with React and TypeScript
Frontend HLD
- Frontend HLD
Frontend Code Splitting and Lazy Loading Strategy Design
Comprehensive high-level design for implementing efficient code splitting and lazy loading in modern web applications to optimize performance and user experience.
- Frontend HLD
Fast Initial Page Load Application Design
Comprehensive frontend high-level design for optimizing application startup performance with code splitting, caching, and preloading strategies
- Frontend HLD
Frontend Performance Optimization Strategy Design
Comprehensive HLD document outlining scalable frontend performance optimization techniques, resource loading strategies, and implementation patterns for high-impact web applications.
Backend LLD
- Backend LLD
Data Access Layer Abstraction Design Patterns and Implementation
Comprehensive low-level design for building scalable, maintainable data access layer abstractions with database abstraction, caching, and transaction management.
- Backend LLD
CQRS Framework Design and Implementation
Comprehensive low-level design for a Command Query Responsibility Segregation (CQRS) framework with event sourcing, read/write model separation, and distributed consistency patterns.
- Backend LLD
Event Sourcing Framework Design and Implementation
Comprehensive low-level design for a scalable event sourcing system with CQRS, event storage, and replay capabilities
Backend HLD
- Backend HLD
API Throttling System Design: Rate Limiting and Traffic Control
Comprehensive backend architecture for implementing rate limiting, traffic control, and API throttling mechanisms at scale.
- Backend HLD
API Rate Limiter Design and Implementation
Comprehensive backend system design for rate limiting APIs with token bucket and sliding window algorithms, including distributed architecture considerations.
- Backend HLD
API Gateway High-Level Design for Scalable Microservices Architecture
Comprehensive backend architecture design for API Gateway implementation with load balancing, authentication, and monitoring capabilities.
AI/ML System Design
- AI/ML System Design
Matrix Factorization and Collaborative Filtering System Design
Comprehensive AI/ML system design for recommendation engines using matrix factorization and collaborative filtering techniques with production-ready architecture considerations
- AI/ML System Design
Gradient Boosting Machine Design and Implementation
Comprehensive system design document for gradient boosting frameworks including XGBoost and LightGBM architectures, trade-offs, and production implementation strategies.
- AI/ML System Design
Large-Scale Logistic Regression Scoring System Design
Comprehensive system design for scalable logistic regression inference at enterprise scale with distributed computing and real-time scoring capabilities.