Advanced User Guide

The advanced guide covers features that build on the basics from the Tutorial.

Each page here stands alone — you don't need to read them in order. Jump to whatever you need.

Topics

• Environment Variables — using ${VAR} and ${VAR:default} placeholders to source property values from environment variables at runtime
• Qualifier Support — when you have multiple implementations of the same type and need to pick a specific one
• Component Lifecycle — deeper control over initialization and destruction order
• Starters — packaging reusable modules with auto-discovery and lifecycle hooks