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News
Redis Is Not Your Database: Designing Cache Failures, Fallbacks, and Resilient Backends
20+ hour, 43+ min ago (724+ words) Redis can make a backend dramatically faster. It can also make a backend dramatically more fragile if the architecture treats the cache as a dependency that must always be available. The distinction is simple: A database stores authoritative data. A…...
I Thought Redis Would Save My API. Just 500 Requests Proved Me Wrong.
21+ hour, 14+ min ago (243+ words) As our series continues, Deep-Dive Backend Systems Roadmap. I created the simplest weather API... Tagged with webdev, distributedsystems, redis, programming....
Why Is Redis So Fast? Understanding the In-Memory Database
22+ hour, 13+ min ago (27+ words) Redis can deliver extremely low-latency reads and writes. Here’s how in-memory storage, persistence, data structures, and its mostly …...
Cloudflare Tests Cache Transcoding to Reduce Storage Requirements
1+ day, 4+ hour ago (775+ words) Online InfoQ AI-Assisted Engineering Certification (Oct 19): Your agent got faster. Did your code get better? Register Now Joe Cassavaugh shares his journey from software engineer to successful solopreneur with a $2M+ indie franchise. He explains how he scaled production to 10 games…...
Scaling Event-Driven APIs: Real-Time WebSockets and Redis Pub/Sub for High-Concurrency Apps
1+ day, 9+ hour ago (480+ words) From a business perspective, system instability during peak usage events directly damages user retention, degrades brand trust, and triggers SLA violations. For e-commerce, financial platforms, and real-time gaming, a latency spike or dropped connection state can result in direct financial…...
KV Cache, Prefix Caching, Prompt Caching, and Semantic Caching — Four Cache Layers in LLMs
1+ day, 19+ hour ago (25+ words) KV cache, prefix caching, prompt caching, and semantic caching are four different mechanisms. Three cost you time and money. The fourth lies with a 200....
Valkey 9.1 vs Redis 8.4: The Fork Finally Grew Up
2+ day, 2+ hour ago (456+ words) Back in March 2024, when Redis changed its license, the advice most teams got was simple: wait and see. Valkey, the Linux Foundation fork, was brand new. It was essentially Redis 7.4 with a different governance badge, and nobody wanted to migrate…...
What Is Web Cache Poisoning? How Can a Cached Response Become a Security Problem?
2+ day, 4+ hour ago (981+ words) Here's something that should be completely unremarkable. A user requests /homepage. The origin server generates a response. A cache stores it. The next user requests /homepage. The cache returns the stored response without touching the origin. That's caching working as…...
LRU Cache in PHP 8.5 for Identity Map: 13+ Million Ops/Sec
2+ day, 6+ hour ago (25+ words) An LRU cache in PHP is one of those problems everyone and their dog has already solved a dozen times... Tagged with php, laravel, webdev....
DeepSeek V4.1 Flash - API Pricing & Providers
4+ day, 7+ hour ago (426+ words) It is suited for coding, reasoning, and agentic workflows, and is particularly strong at long-horizon tasks that must run to completion across many steps. In / Out Price $0.30 / $1.20per 1M This model is hosted by one provider. OpenRouter forwards every request to it…...