Programming Brain
A curated knowledge base for software engineers — covering algorithms, system design, design patterns, and everything in between.
AI-Driven Engineering
AI-driven development workflows, agent orchestration, automated refactoring, prompt engineering, and the human-AI collaboration model for 2026 and beyond.
Backend Engineering
Node.js server architecture, Phoenix LiveView, Rails Hotwire, real-time systems — the server-side perspective.
Databases
SQL, NoSQL, indexing, query optimisation, ACID transactions, replication — how data is stored and retrieved at scale.
Design Patterns
Creational, Structural, and Behavioral patterns that shape clean architectures.
DevOps & Infrastructure
Docker, CI/CD, Kubernetes, monitoring, observability — shipping and operating software reliably.
Data Structures & Algorithms
Arrays, Trees, Graphs, DP, Sorting — master the building blocks of efficient software.
Arrays
Linked Lists
Stacks & Queues
Trees — BST & Trie
Graphs
Heaps & Hash Maps
Sorting & Searching Algorithms
Dynamic Programming & Backtracking
Bit Manipulation
Frontend Fundamentals
Browser internals, JavaScript engine, call stack, event loop, Browser APIs, CSS, performance & security — everything the browser does under the hood.
How Browsers Work
Critical Rendering Path
JavaScript Engine & Runtime
Call Stack & Execution Context
Event Loop & Async JavaScript
Browser APIs
JavaScript Fundamentals
JavaScript Advanced
OOP vs Functional Programming in JavaScript
CSS Fundamentals
ECMAScript History & Evolution
CSS Advanced
Performance & Core Web Vitals
Security in the Browser
TypeScript Deep Dive
Languages & Runtimes
Language speed benchmarks, choosing the right tool, idioms and best practices across Go, Rust, Elixir, Ruby, Python, and more.
Low-Level Design (LLD)
SOLID, DRY, API Design, UML — craft maintainable, elegant code.
Operating Systems
Processes, Threads, Concurrency, Memory Management — how the machine really works.
System Design (HLD)
Microservices, Caching, Sharding, CAP Theorem — architect systems at scale.