Technology Stack

Back End

• Ubuntu Linux OS
• Apache HTTP server configured as reverse proxy
• JRE 8
• Apache Tomcat Java application server
• Web service application, incorporating:
  • Data model
    • Embedded Apache Derby database
    • Hibernate ORM
    • Custom entity classes
    • Spring Boot Data
    • Custom data repository interfaces
• Service controllers
  • Spring MVC
  • Custom controller classes
• View composition & serialization
  • Jackson JSON
  • Custom view classes & interfaces
• Authentication
  • Spring Security
  • Google Sign In (external service; see https://developers.google.com/identity)
  • Custom authentication verification class

Front end

• Android OS
• Data model
  • Custom entity and other model classes
  • Custom type converters
• Remote service interfaces
  • Retrofit
  • ReactiveX
  • Gson
• View Model components
  • Android Lifecycle framework (ViewModel & LiveData)
  • Custom view model classes
• View
  • Custom ViewPager and ViewPager.Adapter classes
  • Custom layouts
• Controller
  • Custom activity and fragment classes
• Authentication
  • Google Sign In (external service; see https://developers.google.com/identity)