Backend

JoyMini API — Enterprise-Level NestJS Backend Architecture Practice

A unified backend platform built with NestJS + Prisma + PostgreSQL + Redis + BullMQ, supporting 200+ API endpoints across 4 frontend applications

4-Core Server Backend Optimization Report: Why Cluster Mode Is Not the Answer

This article documents the multi-core optimization evaluation process for a NestJS API backend deployed on a 4-core VPS. It analyzes the feasibility of Cluster mode, UV_THREADPOOL_SIZE, database query optimization, Redis caching, and Nginx cache tuning one by one, ultimately concluding that "the bottleneck is DB I/O, not CPU."

Deep Dive into NestJS Backend Architecture: Dual-Domain JWT, Device Security Guard, and Distributed Locks