techzen.hashnode.dev5.5. The Final Trade-off: A Holistic Review of System Constraints and DecisionsThe Final Trade-Off: A Holistic Review of System Constraints and Decisions Okay, so you've designed a system, you've considered different architectures, you've argued for your favorite caching strategy, and you've meticulously planned for scalability...Nov 23, 2025·6 min read
techzen.hashnode.dev5.4. Design a Distributed ID Generator case studyBuilding Unique Identifiers at Scale: Designing a Distributed ID Generator In the world of distributed systems, where data is spread across multiple machines, generating unique identifiers (IDs) can be surprisingly tricky. Why? Because relying on a s...Nov 23, 2025·5 min read
techzen.hashnode.dev5.3. Design a Simple Chat System case studyDesigning a Simple Chat System: A Beginner-Friendly Guide Chat applications are everywhere! From WhatsApp and Slack to in-game chats and customer support tools, they've become an integral part of our digital lives. Ever wondered how these systems are...Nov 23, 2025·4 min read
techzen.hashnode.dev5.2. Design a Global News Feed Case studyDesign a Global News Feed: Let's Build a Modern Social Network! Ever wondered how Facebook, Twitter (X), or Instagram deliver personalized news feeds to millions of users worldwide? It's a complex system, but don't worry, we'll break it down! Today, ...Nov 23, 2025·6 min read
techzen.hashnode.dev5.1. Design a URL Shortener (e.g., Bitly) Case studyDesigning Your Own Bitly: A Beginner's Guide to URL Shorteners Ever wondered how those super short URLs like bit.ly/xyz123 actually work? They're not magic, just clever system design! Today, we'll break down the process of designing your own URL shor...Nov 23, 2025·5 min read
