Redis

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 👁 7

Getting ChatGPT to Write Accurate Redis Caching Logic Without Cache Stampedes

ChatGPT can scaffold Redis caching code fast, but it often skips the stampede problem entirely. Here's how to prompt it for production-safe logic that handles lock-based and probabilistic expiry patterns correctly.

Jun 26, 2026 9m read 👁 18

Fixing AWS ElastiCache Redis Evictions That Silently Degrade App Performance

Your AWS ElastiCache Redis cluster looks healthy, CPU usage is low, and no alarms are firing—yet application latency keeps increasing. The culprit may be Redis evictions. When Redis starts silently removing keys due to memory pressure, cache hit rates drop and databases suddenly absorb extra load.

Jun 18, 2026 5m read 👁 11