Explain spring profiles.

Spring Profiles provide a way to segregate parts of your application configuration and make it be available only in certain environments. For example, swagger may be enabled only for lower environments and can be disabled for the production environment.

@Configuration
@EnableSwagger2
@Profile("DEV,SIT,UAT")
public class SwaggerConfig {
    // your swagger configuration
}

Any @Component, @Configuration or @ConfigurationProperties can be marked with @Profile to limit when it is loaded.

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