Curated developer articles, tutorials, and guides � auto-updated hourly


A production story about payment retries, duplicate requests, Redis, distributed locks, and how idem...


TL;DR — In a typical authenticated Laravel app using spatie/laravel-permission, every request that.....


Você implementou um endpoint que busca a timeline de uma conversa, viu que a query era pesada demais...


1. Introduction To better understand how databases and network servers work internally, I...


by Rashed We had a number in our heads: managed Redis, smallest HA tier, maybe $70 a month. We...


Entenda por que chaves grandes no Redis degradam todo um ambiente compartilhado, como detectá-las e ...


AI agents are slow by nature. When a user sends a message to an AI-powered chatbot, what looks like ...


How a double-spend during testing taught me why financial systems treat duplicate requests as a...


How I Built a Real-Time Precious Metals Price Feed for 30,000 Concurrent Users in...


A real account of building an Async Job Queue with Backpressure & Priority Scheduling using...


How llm0 gets to 3 ms p50 cache-hit latency on a 4 vCPU droplet — three Redis Lua scripts, a two-tie...


Hôm trước mình vừa trải qua một buổi phỏng vấn vị trí Backend Developer Intern tại FPT Telecom. Và.....


Redis is often a misunderstood tool in the backend developer's arsenal. While many view it simply as...


The Silent Downstream Danger When you build a professional B2B SaaS platform at Smart Tech Devs,...


When building Telegram bots with grammY, it is natural to expect that a media album arrives as a...


When building Telegram bots with Telegraf, it is easy to expect that a media album arrives as a...

Learn how to boost microservices performance with Redis caching strategies, including cache-aside, c...


Ensuring data consistency in distributed systems has always been a headache. When multiple services....


Push to Redis, scale workers, watch it break. The four bottlenecks hit in a specific order. Here's t...


> - Valkey 9.1.0 (May 19, 2026) is the first minor release after the 9.0 GA, with 80+ contributors h...


WordPress page caching sounds simple: generate a page once, store the finished HTML, and serve it...


Everyone learns Redis as a cache on day one. Most developers never go further. But here's the truth...



EU VAT validation in Next.js: VIES caching with Redis, three-state results, reverse charge logic, an...