VVrushika D8h ago · 11 min readBuilding a Scalable QR Code Generation System: Technical Challenges and SolutionsQR codes have become an important part of modern digital interactions. From online payments and product information to event registrations and business networking, they provide a simple way to connectdigitalqr.hashnode.dev
YYash Dhawane1d ago · 6 min readScalability: Why Adding More Servers Isn't Always the AnswerI'm learning High-Level Design (HLD), and one of my first lessons was about scalability. Before this, when I thought about a system struggling with increasing traffic, my instinct was simple: add moreyashdhawane.hashnode.dev
HHamed Yousefi2d ago · 16 min readActors in Production: How Discord, LinkedIn and Halo Use the Actor ModelThe actor model is easy to describe: small units that own their state, handle one message at a time, and talk only by messages. If you haven't met it yet, my previous article covers where it came fromhmdsefi.hashnode.dev
MMuhammad Ahmad4d ago · 3 min readChatGPT Serves 800 Million Users From One Postgres Primary. Here's How.800 million people use ChatGPT, and every write still lands on one PostgreSQL primary. No sharding. When I read OpenAI's post Scaling PostgreSQL to power 800 million ChatGPT users by Bohan Zhang, I co1mahmad.hashnode.dev
AAritra Chakraborty2d ago · 4 min readNetflix Conductor 4.0: Scaling Workflows to 30,000 Tasks with Asynchronous EvaluationA workflow orchestrator can coordinate thousands of operations and still hit a scalability ceiling—not because individual tasks are too expensive, but because the engine spends too much time deciding aidatalegends.hashnode.dev
Vvasundhra4d ago · 7 min readYour First Version Works. Will Your Software Still Work When the Business Grows?Every software product begins with a set of assumptions. You expect a certain number of users. You know which features matter most. You have a rough idea of how data will move through the system, and techblogs3.hashnode.dev
DDevang Pandya5d ago · 10 min readHow Hotstar Streamed Cricket to 25 Million+ People at Once: Scaling for a Known Traffic SpikeBy Devang Pandya · Cloud Tech by Devang · Cloud • DevOps • AI — Made Simple This post is the full breakdown for the "cricket match night at home" story Reel. If you came here after commenting HOTSTARcloudtechbydevang.hashnode.dev
AAbir Eltaief6d ago · 27 min readArchitecting for Scale: Battle-Tested Scalability Patterns Across AWS, Azure, and GCP (Part 1/5) Series Foreword: Demystifying Complex Cloud Systems Through Design Patterns As an active Multi-Cloud Architect across AWS, Microsoft Azure, and GCP—having recently earned my Google Cloud Certified Prscalability-patterns-modern-distributed-systems.hashnode.dev
AAnish AnsariOct 24 · 7 min readSystem Design Drill Day 6: Sharding and Partitioning a MySQL Orders TableThe orders table has grown too big for one server, and another replica won't help. Replicas spread reads, but each one still holds all the data, and every write still lands on the same primary. Past ablog.anishansari.com.np
MMuhammad Ali MughalOct 24 · 8 min readHow to Prevent Double Booking: Locks, Holds and ExpiryBy Muhammad Ali Mughal · Last updated 24 October 2026 Two customers click "Book" on the last slot at the same moment. Both see a confirmation. One of them shows up to find the truck, room or appointmeresume-ai.hashnode.dev
