⚡ Developer Reference

Study Notes &
Crash Courses

A personal collection of dense, practical reference guides covering full-stack development, system design, and interview prep.

// Reference Guides

Python & FastAPI

Fundamentals, core concepts, virtual environments, Pydantic models, and FastAPI from routing to deployment.

Python 3.12 FastAPI Pydantic Async

Modern C# syntax, OOP, async patterns, ASP.NET Core, Entity Framework Core, and SQL through advanced queries.

C# 12 .NET 8 EF Core SQL

TypeScript & React

Types, generics, advanced TS patterns, React hooks, state management, data fetching, and testing strategies.

TypeScript React 19 Hooks Testing

System Design & Architecture

Scalability fundamentals, distributed systems patterns, databases, caching, messaging, and design trade-offs.

Scalability Distributed Databases Caching

Searchable Q&A covering C# & .NET, databases, architecture, React, algorithms, Python, and behavioural questions.

C# · .NET React Algorithms Behavioural

SQL — Enterprise Reference

Foundations through advanced patterns: joins, window functions, indexes, ACID transactions, query optimisation, normalisation, and enterprise-scale architecture.

Window Functions Indexes Transactions Performance

Algorithm Patterns

10 core LeetCode patterns — sliding window, two pointers, DFS, BFS, dynamic programming, heap, and more with worked examples.

Sliding Window DFS / BFS DP LRU Cache