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Case Studies
- How Uber Computes ETA at Half a Million Requests per Second
- How Canva Supports Real-Time Collaboration for 135 Million Monthly Users
- How Disney+ Hotstar Delivered 5 Billion Emojis in Real Time
- How Hashnode Generates Feed at Scale
- How Cloudflare Was Able to Support 55 Million Requests per Second With Only 15 Postgres Clusters
- How Uber Finds Nearby Drivers at 1 Million Requests per Second
- Virtual Waiting Room Architecture That Handles High-Demand Ticket Sales at SeatGeek
- 5 Reasons Why Zoom Was Able to Support 300 Million Video Calls a Day
- How Does Netflix Work?
- Wechat Architecture That Powers 1.67 Billion Monthly Users
- How Shopify Handles Flash Sales at 32 Million Requests per Minute
- How LinkedIn Scaled to 930 Million Users
- This Is How Airbnb Adopted HTTP Streaming to Save 84 Million USD in Costs
- How Giphy Delivers 10 Billion GIFs a Day to 1 Billion Users
- How LinkedIn Adopted Protocol Buffers to Reduce Latency by 60%
- This Is How Stripe Does Rate Limiting to Build Scalable APIs
- Tech Stack Evolution at Levels fyi
- How Disney+ Hotstar Scaled to 25 Million Concurrent Users
- 11 Reasons Why YouTube Was Able to Support 100 Million Video Views a Day With Only 9 Engineers
- Amazon Prime Video Microservices Top Failure
- This Is How Quora Shards MySQL to Handle 13+ Terabytes
- 8 Reasons Why WhatsApp Was Able to Support 50 Billion Messages a Day With Only 32 Engineers
Fundamentals
- Cell Based Architecture
- How to Scale an App to 10 Million Users on AWS
- Hinted Handoff
- Consistency Patterns
- Gossip Protocol
- Service Discovery
- Consistent Hashing
- How Discord Boosts Performance With Code-Splitting
- Microservices Lessons From Netflix
- Top 5 Caching Patterns
- Micro Frontends
- Actor Model
Data Structures
Deep Dives
- Slack Architecture
- Distributed Counter
- Real Time Presence Platform
- Real-Time Live Comments
- Real-Time Gaming Leaderboard
- Pastebin
- URL Shortener
Miscellaneous
- Back of the Envelope
- How to Troubleshoot if You Can’t Access a Particular Website?
- What Happens When You Type a URL Into Your Browser?
- System Design Interview Cheat Sheet
- 6 Proven Guidelines on Open Sourcing From Tumblr
- Tumblr Shares Database Migration Strategy With 60+ Billion Rows
- Software Engineer Interview Learning Resources
- 7 Simple Ways to Fail System Design Interview