Before delving into developing our services, we will first develop a microservices client, in the form of an HTML5 page, using the popular Twitter Bootstrap CSS library as well as the ubiquitous jQuery JavaScript library. The JavaScript code in the frontend service will invoke the controller microservice, passing a JSON representation of user entered data. The controller service will then invoke the persistence service and save data to a database. Each microservice will return an HTTP code indicating success or an error condition.
The most relevant parts of our client code are the HTML form and the jQuery code to submit the form to our controller microservice.
We will only show small snippets of code here. ...
