redis Archives - ITNotes

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Stop Using Fixed Window: Build a Robust Sliding Window Rate Limiter with Redis and Node.js

August 12, 2026

Is your API protection leaking? Learn why Fixed Window rate limiting fails and how to build a precise Sliding Window system using Redis and Node.js.

Database

Scaling Real-time Leaderboards to 10M+ Users with Redis Sorted Sets

June 13, 2026

Is your database struggling with ranking millions of users? Learn how we migrated to Redis Sorted Sets to achieve sub-millisecond leaderboard updates at scale.

Database

Valkey: Install, Configure, and Migrate from Redis After the License Change

June 2, 2026

After Redis Ltd. changed its license to SSPL in 2024, our team migrated three environments to Valkey — the Linux Foundation-backed BSD fork. Six months in, here's the full guide: installation, configuration, and proven zero-downtime migration strategies from Redis to Valkey.

Database

Scaling Beyond Redis: A Hands-On Guide to DragonflyDB

June 2, 2026

Redis is fast, but its single-threaded nature wastes modern multi-core power. This guide shows you how to migrate to Dragonfly to achieve significantly higher throughput with less architectural complexity.

Security

Hardening Redis for Production: A Practical Guide to ACLs, TLS, and Isolation

May 23, 2026

Redis is fast, but its default settings are a security risk. Learn how to implement ACLs, TLS, and network isolation to protect your production data.

Database

Defeating Cache Penetration: Why I Switched to Redis Bloom and Cuckoo Filters

May 18, 2026

Is your database crashing from cache misses? Discover how Redis Bloom and Cuckoo Filters can block bot attacks and save your backend from Cache Penetration.

Programming

Beyond Code Deploys: Mastering Feature Flags and Canary Releases

May 6, 2026

Stop conflating deployment with release. Learn how to use feature flags for instant toggles and risk-free canary rollouts using deterministic hashing, all without needing to redeploy code.

Programming

Preventing Data Corruption: A Practical Guide to Redis Distributed Locks

May 5, 2026

Race conditions can break your microservices. Learn how to use Redis and the Redlock algorithm to ensure data consistency across distributed systems with Python.

Database

Stop the Race Conditions: A Guide to Redis Lua Scripting

May 2, 2026

Race conditions can kill your application's reliability. This guide shows you how to use Redis Lua scripting to ensure atomicity, reduce network lag, and handle complex logic directly on the server.

Database

Redis Sentinel vs. Redis Cluster: Surviving Production Failures

May 1, 2026

Is your Redis setup ready for a crash? Learn the practical differences between Redis Sentinel for high availability and Redis Cluster for horizontal scaling, including real-world configuration steps.