Spring Boot Configuration Management Best Practices - The JetBrains Blog
Blog post from JetBrains
Spring Boot supports externalized configuration through property files, environment variables, system properties, and command-line arguments, allowing a single application artifact to operate across environments. Recommended practices separate safe application defaults, deployment-specific settings, and sensitive secrets, with secrets managed through dedicated services rather than source control. For related settings, type-safe immutable `@ConfigurationProperties` records are preferred over scattered `@Value` expressions because they support validation, metadata, IDE navigation, and refactoring, while startup validation should make applications fail early when required values are missing or invalid. Developers should understand Spring Boot’s property-source precedence, use environment variables for platform-provided overrides, and avoid hard-coding credentials or environment-specific endpoints. Configuration approaches should reflect the deployment model, such as environment overrides for monoliths, ConfigMaps and secret systems for containers, and centralized configuration servers for microservices, while IntelliJ IDEA can help diagnose effective values, property sources, and overrides during development.
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