Implementing microservices

Now that we have a good understanding of what microservices are and what they are intended for, we are going to start looking at how to implement a microservice architecture using Spring Framework. Over the next few sections, we are going to look at some of the important concepts that we haven't covered so far. It's better to approach these from a practical viewpoint to make them easier to understand.

Dynamic configuration

We have all worked on applications that use different configuration files or associated metadata to allow you to specify configuration parameters that make an application work. When we are talking about microservices, we need to approach this configuration process in a different way. We should avoid configuration files and instead adopt the twelve-fact app configuration style (as outlined at https://12factor.net), proposed by Heroku. When we are using this configuration style, we want to externalize all the properties that are different in each...