marfarma / ordersdemo

demo

This is the demo application used in my ServiceStack talk at Chicago Code Camp. A running version should be available at ccdemo.apphb.com

Scenario: Think of it like a Starbucks. Orders are entered by a user (or taken by a cashier). A fulfiller (barista) starts processing/fulfilling the order. The user can watch the status of their order by watching a queue. Using ServiceStack I want to try to create 3 separate systems (Ordering/Fulfilling/Customer Queue) that only know about each via their API.

Notes/Examples:

• Uses the recommended ServiceStack project structure
• ServiceStack Registration and Authentication within MVC.
• Redis Pub/Sub
• SignalR to make live updates in views

Additional softwares used:

• MVC 4 - not doing much. Views pull data via AngularJS.
• ServiceStack (hosted at /api)
• SQLite - persistence for Orders/Fulfillments
• AngularJS - handling all the View/UI stuff
• Redis - Cache, handling Pub/Sub and holding data for Orders Queue
• SignalR - realtime refreshing of View grid data

Ordering System Concept:

• Any user can create an Order
• Orders get written to the database and displayed in the View
• Orders are not editable (currently)
• When an Order is placed a 'NewOrder' message is published

Fulfillment System Concept:

• A 'Fulfiller' must log in.
• Fulfillments are created by 'listening' for 'NewOrder' message
• Once logged in a Fulfiller can view Orders that have not been fulfilled
• When a fulfillment is updated a 'UpdateFulfillment' message is published

Orders Queue Concept:

• Shows all partial Order data (customer name, item, status) that have not been fulfilled

Issues:

• If Redis isn't running Visual Studio seems to crash