456a5d6864
Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
---
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title: config
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---
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# Service: `config`
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The `config` service provides a unified interface for managing application configuration. It handles retrieving and setting configuration values, persistent storage, and feature flags.
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## Interfaces
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### `type Config`
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`Config` defines the contract for the configuration service.
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```go
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type Config interface {
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// Get retrieves a configuration value by key and stores it in the 'out' variable.
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Get(key string, out any) error
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// Set stores a configuration value by key.
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Set(key string, v any) error
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}
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```
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## Standard Implementation
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While `Config` is an interface, the standard implementation typically provides the following functionality:
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- **Persistent Storage**: Saves configuration to disk (e.g., `config.json`).
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- **Feature Flags**: Checking if specific application features are enabled.
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- **Defaults**: Providing default values for configuration settings.
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### Common Methods
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Although not part of the minimal `Config` interface, implementations often provide:
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- `Save() error`: Explicitly saves the current configuration to disk.
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- `IsFeatureEnabled(feature string) bool`: Checks if a feature flag is active.
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