Architecture
Data Structures Quick Reference
A comprehensive visual guide to 30+ essential data structures organized by category. Each structure includes real-world analogies, Big-O complexity analysis, practical use cases, and filtering by popularity. From fundamental arrays and linked lists to specialized structures like Fenwick trees and suffix trees—everything you need to choose the right data structure for your problem.
Design Patterns Quick Reference
Master the essentials with visual memory aids. Each pattern is presented as a card with a memorable real-world analogy and image, making it easier to recall and apply the right pattern when you need it. Filter by popularity to focus on the most commonly used patterns first.