Why Did Redis Keys Suddenly Disappear? A Deep Dive into Memory Exhaustion and Client Buffer Overflow

This article analyzes a production incident where Redis failed to retrieve keys at 2 AM, tracing the root cause to a short‑term memory write‑full condition caused by massive GET request bursts that overflowed client output buffers, and outlines both emergency fixes and long‑term mitigations.

Client Buffer OverflowKey EvictionMemory Management

0 likes · 10 min read

Why Did Redis Keys Suddenly Disappear? A Deep Dive into Memory Exhaustion and Client Buffer Overflow

Top Architect

Jan 21, 2021 · Databases

Understanding Key Redis Performance Metrics: Memory Usage, Command Processing, Latency, and Key Eviction

This article explains how to use Redis INFO and related commands to monitor critical performance metrics such as memory usage, memory fragmentation, total commands processed, latency, and key eviction, and provides practical tips for interpreting these metrics and optimizing Redis deployments.

Database MonitoringKey EvictionLatency

0 likes · 27 min read

Understanding Key Redis Performance Metrics: Memory Usage, Command Processing, Latency, and Key Eviction

Java High-Performance Architecture

Aug 5, 2016 · Databases

5 Essential Redis Tips from Heroku to Boost Performance

Heroku shares five practical Redis recommendations—including using connection pools, naming clients, selecting key eviction policies, avoiding the KEYS command, and configuring connection timeouts—to improve performance, manage resources, and simplify troubleshooting in production environments.

Client NamingConnection PoolKey Eviction

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5 Essential Redis Tips from Heroku to Boost Performance