ARAritro Royinaritro.hashnode.dev·16h ago · 22 min readI Couldn't Overwhelm My Chess Server. I Could Only Overwhelm My Load Tester.TL;DR Took a hobby Rust chess engine and turned it into a horizontally-scalable, fault-tolerant multiplayer server. The chess was never the hard part; where the game lives and what happens when a ser00
YEYves Eychenneinyeychenne.hashnode.dev·2h ago · 9 min readI reimplemented a CAP-aware total-order broadcast protocol in Rust and verified it six waysIn the early 1990s, in a research lab at Cegelec near Paris, a small team I was part of built a way to keep industrial control systems running through hardware failures — the kind that supervise power00
AAAli Asgarinaliasgarmkantawala.hashnode.dev·18h ago · 8 min readHow to Design an Event-Driven Analytics Pipeline — A System Design Deep DiveInterview prep series: real problems, real trade-offs, no hand-waving. The Problem Worth Solving Here's a scenario straight from a fintech startup I worked at. We had field agents responsible for onb00
PMPeace Melodiinpeacemelodi.hashnode.dev·1d ago · 5 min readBuilding a Flash Sale Engine That Cannot Oversell: Distributed Locking and Optimistic Concurrency in NestJSThe problem flash sales create Flash sales create one of the most unforgiving concurrency problems in backend engineering. Thousands of people request the same limited stock in the same instant. If tw10
VVinayinvinay206.hashnode.dev·3d ago · 10 min readCAP, PACELC, ACID, and Consistency Models: The One Trade-off Hiding Behind Four NamesIf you've spent any time around distributed systems, you've run into CAP theorem, PACELC, ACID, and "consistency models" as four separate topics to memorize. They're not separate. They're the same und00
KKKushneet Kaurincloudnativebykushneet.hashnode.dev·3d ago · 6 min readThe Open Source Republic "CNCF"This article is part of the Cloud Native from Scratch series — where I document my journey learning cloud native technologies from scratch, one concept at a time. Start from the beginning: Containers 00
AAAli Asgarinaliasgarmkantawala.hashnode.dev·3d ago · 5 min readWhy Daily Transaction Volume is the Wrong Number to Quote in System Design InterviewsThe Mistake Most Candidates Make Picture this: You are in a system design interview. The interviewer asks you to design a ledger system or a payment settlement pipeline. Eager to show you can handle s00
AEAhmed Eid Abdallahineidox.hashnode.dev·4d ago · 5 min readRabbitMQ was Never Our Job Runner. We Stopped Mixing Communication with Execution.Hello, my name is Ahmed Eid (eidoox), a Senior Backend Engineer with over 3 years of experience building reliable, scalable, distributed, and real-time systems. In this Production Insight, I want to s00
IDIgboanugo David Ugochukwuindavidigboanugo.hashnode.dev·6d ago · 11 min readBeyond the Login: Why API Security Now Lives in Behavior, Not AuthenticationThere's a moment that keeps recurring in breach post-mortems over the last two years, and it's never the moment anyone expects. It isn't a cracked password. It isn't a phished MFA code. It's a token —10
AAAbbas Afsharfarniainabbas-code.hashnode.dev·Jun 15 · 8 min readThe 11-Step System Design Process I Use Before Designing Any System 🚀System design can feel messy when you jump straight into databases, queues, caches, cloud services, and architecture diagrams. The better approach? Use a repeatable process. Before choosing Kafka, Red00