RHRifat Hossaininrifat-tipu.hashnode.dev·Aug 12 · 11 min readRace Conditions in E-Commerce: How I Discovered a Silent Bug That Could Cost Me MoneyI was building a backend for a clothing store called Emras — a full-stack e-commerce platform using Spring Boot 4, PostgreSQL 18, and a modular monolith architecture. Everything was going well. Auth w00
RHRifat Hossaininrifat-tipu.hashnode.dev·Jun 22 · 11 min readSupercharging Spring Boot with Redis: Caching, Pub/Sub, Rate Limiting & MoreFrom ~500ms PostgreSQL queries to ~1ms Redis hits — a complete hands-on guide If you've ever watched your API response times crawl under load and thought "there must be a better way" — Redis is that 00
