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Oct 13, 2026 · Backend Development

Mastering ASP.NET Core Configuration System and Options Pattern: Sources, Priority, and Hot Reloading

This article provides a comprehensive deep dive into ASP.NET Core's configuration system, covering multi-source configuration priority merging, flattened key-value representation, the three Options pattern interfaces (IOptions, IOptionsSnapshot, IOptionsMonitor) with their lifecycle and hot-reload behaviors, custom configuration provider implementation, and common pitfalls like captive dependencies and silent binding failures.