Performance Engineering — Scalable System Design & Optimization Guide
Performance is not a feature you add later. It is something you design from the beginning. Most production slowdowns are not caused by lack of hardware. They are caused by: Poor architecture Blocking calls Inefficient database queries Misconfigured thread pools Improper workflow design This hub page brings together core performance topics across Java, BPM, databases, and infrastructure . The goal is simple: Build systems that remain fast under real-world load. What is Performance Engineering? Performance Engineering is the discipline of: Designing for scalability Measuring system behavior Identifying bottlenecks Optimizing without breaking reliability It is not about guessing. It is about metrics and architecture. Performance Layers 1️⃣ Application Performance Symptoms: Slow API response High latency CPU spikes Focus areas: Thread pools Async execution Blocking operations Memory usage 2️⃣ Workflow Performance Symptoms: Job backlog Process delays Incident spikes Focus areas: Job ex...