https://devops-monk.com/tags/configuration/Recent content in Configuration on Devops MonkHugoen-usSun, 03 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-boot/spring-boot-configuration-profiles/Sun, 03 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-boot/spring-boot-configuration-profiles/Every real application needs different configuration for different environments — a local database for dev, a connection pool for staging, a secret manager for prod. This article covers everything Spring Boot gives you to handle this cleanly. application.properties vs application.yml Spring Boot reads configuration from src/main/resources/application.properties (or .yml) by default. Both formats express the same thing: application.properties: server.port=8080 spring.datasource.url=jdbc:postgresql://localhost:5432/orders spring.datasource.username=app spring.datasource.password=secret spring.jpa.show-sql=false application.yml: server: port: 8080 spring: datasource: url: jdbc:postgresql://localhost:5432/orders username: app password: secret jpa: show-sql: false YAML is generally preferred for nested properties — it’s less repetitive.https://devops-monk.com/tutorials/spring-boot/spring-boot-configuration-properties/Sun, 03 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-boot/spring-boot-configuration-properties/@ConfigurationProperties binds external configuration to a typed Java class — replacing scattered @Value annotations with a single, validated, testable object. Why @ConfigurationProperties Over @Value // @Value — scattered, no type safety, no validation @Service public class PaymentService { @Value("${payment.gateway.url}") private String gatewayUrl; @Value("${payment.gateway.timeout:5000}") private int timeoutMs; @Value("${payment.gateway.api-key}") private String apiKey; @Value("${payment.gateway.max-retries:3}") private int maxRetries; } // @ConfigurationProperties — one place, typed, validated @Service public class PaymentService { private final PaymentProperties properties; // all config in one place, injected as a single object } @ConfigurationProperties gives you: