AJArihant Jaininarihantjain916.hashnode.dev·May 12 · 8 min readRedis Caching in NestJS: How I Cut Database Calls by 60%Why I Added Redis Caching On one of my freelance projects — a creative portfolio platform with hundreds of concurrent users — the analytics endpoint was getting hammered. Every page load triggered the00
AJArihant Jaininarihantjain916.hashnode.dev·May 1 · 8 min readHow to Build a Multi-Tenant Backend with NestJSWhat is Multi-Tenancy? Multi-tenancy means one application serves multiple independent clients (tenants) — each with their own isolated data. Think of it like an apartment building: One building (your00
AJArihant Jaininarihantjain916.hashnode.dev·Apr 13 · 10 min readNestJS + Prisma + PostgreSQL: My Go-To Freelance Backend StackWhy I Standardized on One Stack When I started freelancing, every project had a different stack. One client wanted Express. Another wanted Fastify. One had MongoDB. Another had MySQL. Every project me00
AJArihant Jaininarihantjain916.hashnode.dev·Apr 4 · 8 min readBullMQ vs Kafka: Which One Should You Use and When?BullMQ and Kafka solve different problems. Here's a practical breakdown of when to use each — with real examples, use cases, and a final recommendation. The Short Answer Before diving deep: BullM00
AJArihant Jaininarihantjain916.hashnode.dev·Apr 3 · 7 min readHow I Cut API Response Time by 50% in a Node.js Production ApplicationWhen I started optimizing backend code, one of the first things I noticed was that our APIs were slow. Not broken — just slow. Averaging 1.2 seconds per request across 15+ endpoints. For a messaging p00
