Srirammoorthy·7h agoMessage Queue vs Pub/Sub vs Message Broker: What’s Really Different?Modern applications often perform multiple operations in response to a single user request. For example, when a customer places an order…
InLevel Up CodingbyHayk Simonyan·9h agoMessage Queues in System DesignImagine an online store where every time a customer places an order, you need to:
InProduction ReadybyAnupam Sinha·10h agoDesign a Chat App for Millions of Users (Interview-Ready, With Code)Design a real-time chat system that handles millions of concurrent messages using WebSocket for real-time delivery, Kafka for fan-out, and…
Paranjay Sharma·13h agoLife Without Coffee, Systems Without KafkaImagine launching a food delivery app like Zomato. On day one, with a hundred users, life is easy. A delivery rider’s phone sends a GPS…
Sandeep pant·16h agoKafka vs Redis as Message Brokers: A Practical Guide for DevelopersHow they work, where they overlap, where they differ, and how to choose the right one for your system.
Imen Bakir·23h agoData Observability in Practice: Watching a Live Flight Data PipelineYour pipeline is green. Is your data?
IndevdomainbyMarcelo Domingues·1d agoThe Saga Pattern: Managing Distributed Transactions Across MicroservicesYou split a monolith into…This article explains why the obvious solution (two-phase commit) fails at scale, the two saga styles, how compensation actually works, the…
Ajay Rathod·1d ago14 Kafka Scenario Interview Questions for Senior Java Developers (Updated for 2026–27)Lag, rebalance storms, duplicate payments, poison pills and share groups — the “what will you do in production” questions, answered the way…
sujal sharma·1d agoThe FLP Impossibility Result (1985): The 7-Page Mathematical Proof That Haunts Every Distributed…Every few months on Hacker News or in an architecture review, a bright engineer proposes a homegrown algorithm for leader election…
