Production Hardening Checklist for Web Systems

Production systems are built around predictability. If errors are invisible, the system is unreliable — even when it “works.” We harden systems with structured logging, controlled exception handling, stable database patterns, and predictable deployment workflows. We focus on performance: indexes where needed, consistent query patterns, and careful caching only after correctness is established. Security is baseline: safe validation, throttling, and careful handling of uploads. The goal is a system that behaves well under stress and can be maintained without fear.