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A growing library of interactive explainers and downloadable cheat sheets covering data structures, Kubernetes, cloud engineering, and the topics that come up most in interviews and day-to-day work.

InteractiveSystem Design
Reddit API: System Design

Interview-ready breakdown of the Reddit subreddit API — entity diagram with animated relationships, full CRUD for Posts, Comments, Votes & Awards, schema with key constraints, and 5 critical design decisions including why votes are separate entities.

InteractiveSystem Design
URL Shortener: System Design

Interview-ready breakdown of a URL shortening service at 10B requests/month — system diagram with live data flow, capacity estimates, REST API design, database schema, and 5 key architectural trade-offs.

InteractiveData Structures
Binary Search Tree: Inorder Traversal

Interactive walkthrough of inorder traversal on a binary search tree, with step-by-step visualization of the recursion and call stack.

PDFKubernetes
Kubernetes Cheat Sheet

Compact reference for core Kubernetes concepts: pods, deployments, services, ingress, configmaps, secrets, and common architecture patterns.

PDFKubernetes
kubectl Commands Cheat Sheet

Fast reference for the kubectl commands you reach for most when inspecting, deploying, and debugging clusters in day-to-day operations.