Microservices sample architecture using ASP.NET Core, Ocelot, MongoDB and JWT.
- Visual Studio 2019
- .NET Core 3.1
- MongoDB
- Postman
There are three microservices:
- CatalogMicroservice: allows to manage the catalog.
- CartMicroservice: allows to manage the cart.
- IdentityMicroservice: allows to manage users.
Each microservice implements a single businness capability and has its own MongoDB database.
There are two API gateways, one for the front end and one for the back end.
Below is the front end API gateway:
- GET /catalog: retrieves catalog items.
- GET /catalog/{id}: retrieves a catalog item.
- GET /cart: retrieves cart items.
- POST /cart: adds a cart item.
- PUT /cart: updates a cart item.
- DELETE /cart: deletes a cart item.
- POST /identity/login: performs a login.
- POST /identity/register: registers a user.
- GET /identity/validate: validates a JWT token.
Below is the back end API gateway:
- GET /catalog: retrieves catalog items.
- GET /catalog/{id}: retrieves a catalog item.
- POST /catalog: creates a catalog item.
- PUT /catalog: updates a catalog item.
- DELETE /catalog: deletes a catalog item.
- POST /identity/login: performs a login.
- POST /identity/register: registers a user.
- GET /identity/validate: validates a JWT token.
Finally, there are two client apps. A front end for accessing the store and a back end for managing the store.
The front end allows registered users to see the available catalog items, allows to add catalog items to the cart, and allows to remove catalog items from the cart.
Here is a screenshot of the store page in the front end:
The back end allows admin users to see the available catalog items, allows to add new catalog items, and allows to remove catalog items.
Here is a screenshot of the store page in the back end:
- CatalogMicroservice project contains the source code of the microservice managing the catalog.
- CartMicroservice project contains the source code of the microservice managing the cart.
- IdentityMicroservice project contains the source code of the microservice managing users.
- Middleware project contains the source code of common functionalities used by microservices.
- FrontendGateway project contains the source code of the front end API gateway.
- BackendGateway project contains the source code of the back end API gateway.
- Frontend project contains the source code of the front end client app.
- Backend project contains the source code of the back end client app.
The source code is described on CodeProject.
You can run the application using IISExpress in Visual Studio 2019.
You will need to install MongoDB if it is not installed.
First, right click on the solution, click on properties and select multiple startup projects. Select all the projects as startup projects except Middleware project:
Then, press F5 to run the application.
You can access the front end from https://localhost:44317/.
You can access the back end from https://localhost:44301/.
To login to the front end for the first time, just click on Register to create a new user and login.
To login to the back end for the first time, you will need to create an admin user. To do so, open Postman and execute the following POST request https://localhost:44397/api/identity/register with the following payload:
{
"email": "[email protected]",
"password": "password",
"isAdmin": true
}Finally, you can login to the back end with the admin user you created.