You have two choices :

• Through Spring Boot Actuator
• Through Spring Cloud Bus

Option 1 : Through Spring Boot Actuator.

Add the spring-boot-starter-actuator dependency in pom.xml :

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> 

When add new changes and you want see that, then you have to call this url :

http://ip:port/actuator/refresh 

But the problem is that the refresh happens at individual server.

Option 2 : Through Spring Cloud Bus

But for this you have to use some messaging queue system like Kafka, RabbitMQ and so on.

I will show with RabbitMQ only.

• First install Rabbit MQ and run it

• Add configuration in application.properties to connect to Rabbit MQ.

Read here : https://www.rabbitmq.com/tutorials/tutorial-one-spring-amqp.html

Add the spring-boot-starter-amqp & spring-boot-starter-actuator in the pom.xml :

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> 

When add new changes and you want see that, then you have to call this url :

http://ip:port/actuator/bus-refresh 

Plus Point : The refresh happens on all the servers.

Note: You can use @RefreshScope to auto refresh the @Value renderers. Example :

@Configuration @RefreshScope public class AppConfig { @Value("${some.value}") private String value; @Bean public PropertyPlaceholderConfigurer propertyPlaceholderConfigurer() throws Exception { final ClassPathResource classPathRessource = new ClassPathResource(PROPERTIES_FILE); final Properties fileProperties = loadDbPropertiesFromInputStream(classPathRessource.getInputStream()); // Instantiate properties dataSource final DriverManagerDataSource dataSource = new DriverManagerDataSource(); dataSource.setDriverClassName(fileProperties.getProperty(PROPERTY_KEY_DATABASE_DRIVER)); dataSource.setUrl(fileProperties.getProperty(PROPERTY_KEY_DATABASE_URL)); dataSource.setUsername(fileProperties.getProperty(PROPERTY_KEY_DATABASE_USERNAME)); dataSource.setPassword(fileProperties.getProperty(PROPERTY_KEY_DATABASE_PASSWORD)); // Init PropertyPlaceholderConfigurer final PropertyPlaceholderConfigurer propertyPlaceholderConfigurer = new PropertyPlaceholderConfigurer(); propertyPlaceholderConfigurer.setLocation(classPathRessource); // Add properties from defined database propertyPlaceholderConfigurer.setPropertiesArray(ConfigurationConverter.getProperties(getDatabaseConfiguration(dataSource))); return propertyPlaceholderConfigurer; } }