Web Services Subcomponents

Highlights

• This modular design allows each component to perform specific tasks.
• Each component is replacable without a complete rewrite of the system.
• Additional components can be brought on in parallel to provide additional functionalty.

Component Details

Controllers

• Controllers process input from the UI component and return responses from the system for the UI to display to the user.
• Controller communicate with the Services Component
• For RESTful API's:
  • Controllers process http verbs such as post, get, put, delete
  • Controllers return http response codes such as 200, 201, 202, 400, 404

Services Components

• Services components processes information sent from the controller
• Processing includes:
  • Performing validation of incoming data
  • Applying Services Component level business rules
  • Determining and executing desired logical operation(s) such as add, retrieve, modify, remove
• Services components are comprised of one or more subcomponents.

Broker Components

• Broker components provide access to one or more permanent datastore(s), usually a SQL database.
• Broker components execute desired logical operation(s) such as insert, select, update, delete
• Broker components are comprised of one or more subcomponents.