⏱ 7 min read Pinterest is a visual discovery platform with 450+ million monthly active users who save, organize, and discover ideas through images Read article

⏱ 7 min read Tinder processes 2+ billion swipes per day across 190+ countries, matching users based on location, preferences, and recommendation algorithms. Designing Read article

⏱ 7 min read Dropbox syncs files across devices for 700+ million users, handling billions of file operations daily. Designing a file storage and Read article

⏱ 7 min read Amazon processes millions of orders daily across hundreds of millions of products. Designing an e-commerce platform tests your ability to Read article

⏱ 6 min read Spotify serves 600+ million users across 180+ markets, streaming over 100 million tracks with sub-second start times. Designing a music Read article

⏱ 7 min read Slack handles millions of concurrent users across hundreds of thousands of workspaces, delivering messages in real-time while supporting search, file Read article

⏱ 7 min read Google Maps serves over 1 billion monthly active users with real-time navigation, traffic data, satellite imagery, and location search. Designing Read article

⏱ 7 min read DNS (Domain Name System) is the internet phone book — translating human-readable domain names into IP addresses. Every web request Read article

⏱ 7 min read YouTube is the second largest search engine in the world, serving over 1 billion hours of video daily to 2+ Read article

⏱ 8 min read When a production system is slow or unresponsive, you need to quickly identify the bottleneck: is it CPU, memory, disk Read article