Vostok.Configuration in a nutshell

Vostok.Configuration is a set of libraries offering configuration tools to .NET applications. It handles fetching configuration data from files or APIs, parsing and converting it to user-defined model classes.

Guiding design principles

• Configuration data sources should be composable regardless of storage formats.

  • It should be easy to combine settings from JSON files, environment variables and custom APIs. This is achieved with configuration source concept and universal settings nodes abstraction.

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• "Hot" configuration updates should be easy to leverage.

  • Hot configuration implies handling changes in settings without application restart. This is enabled by explicitly reactive source design and settings provider methods.

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• Rich object models should be supported for user convenience.

  • ​Binding process supports a wide range of primitives, collections, classes, interfaces and employs a number of conventions for arbitrary types (anything with a TryParse method works).

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• It should be possible to extend the library with arbitrary data sources and object models.

  • Two major extensions points are custom configuration sources and binders.

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Features

• ​On-demand and subscription-based methods to obtain settings;

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• Support for required and secret settings;

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• Support for custom settings validation;

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• Wide selection of built-in sources;

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• Composable binders;

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• Sources can be combined, navigated and transformed;

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• ​Integration with Microsoft configuration system;

Guarantees

See obtain / observe settings scenarios, caching and error handling sections for details.

Good starting points