Distributed Systems

Fixing Silent Dropped Messages in Redis Pub/Sub Under High Throughput

Redis Pub/Sub is fast and lightweight, but it's designed for transient messaging—not guaranteed delivery. Under high throughput, slow consumers, network interruptions, or overloaded subscribers can lead to silently lost messages. Learn why this happens and how to build more reliable messaging system

Jul 19, 2026 4m read 👁 3

Fixing AWS SQS Message Visibility Timeouts That Cause Duplicate Processing

Amazon SQS guarantees at-least-once message delivery, meaning duplicate processing is always possible. One of the most common causes is an incorrectly configured visibility timeout. Learn how visibility timeouts work, why duplicate processing occurs, and how to build resilient, idempotent consumers

Jul 02, 2026 4m read 👁 3