System Design

Go is the language of cloud infrastructure — Kubernetes, Docker, etcd, Terraform, and Prometheus are all written in Go. This […]

React powers the frontend of most major tech companies. Interviewers test your understanding of React internals, hooks, state management, and

Designing a video conferencing system like Zoom or Google Meet is a complex system design problem that tests real-time media

Database design questions appear in nearly every senior engineering interview. You need to go beyond SELECT statements and demonstrate understanding

Designing a file sync and storage service like Dropbox or Google Drive is a popular system design interview question that

Dynamic programming (DP) is one of the most tested algorithmic topics in FAANG interviews. Rather than memorizing problems, learn the

Trees and graphs form the backbone of many technical interview problems. Master these traversal patterns and algorithm templates — most

Designing the Twitter timeline is a classic system design interview question that appears at Twitter/X, Meta, LinkedIn, and many other

JavaScript drives nearly every web frontend and an increasing share of backend (Node.js). TypeScript has become the default for serious

Operating systems fundamentals appear in interviews at companies building systems software, operating in kernel-adjacent spaces (Cloudflare, HashiCorp, Apple), and anywhere

Designing a Git hosting platform like GitHub tests your ability to handle version control storage at scale, real-time collaboration (PRs,

Designing an e-commerce platform at scale appears frequently in system design interviews at Amazon, Shopify, Stripe, and DoorDash. The challenge

Networking fundamentals appear in almost every senior engineering interview. Whether you’re designing a system or debugging production, you need to

Designing a Slack-like team collaboration application tests your knowledge of real-time messaging, WebSocket management, distributed storage, and search. This question