Internet Banking Concept With Java Spring Boot Microservices

This source code was developed for Java based microservices tutorial series from javatodev.com.

In this article series I’m going to explain using internet banking API concept with spring boot based microserices architecture. Initially I’ll develop the core API which will evolve as a full fledged REST API collection until deployments.

Releases

1.0.0 - Initial release with Java 11 and Spring Boot 2.
2.0.0 - Updated version with Java 21, Spring Boot 3.2.4 , Spring Cloud 2023.0.0

Installation

Clone the repository:

$ git clone https://github.com/JavatoDev-com/internet-banking-concept-microservices.git

Navigate to the docker-compose folder:

$ cd internet-banking-concept-microservices/docker-compose

Start application using docker-compose:

$ docker-compose up -d

Docker Containers

Container	IP	Port Mapping
openzipkin_server	172.25.0.12	9411
keycloak_web	172.25.0.11	8080
keycloak_postgre_db	172.25.0.10	5432(Closed Port)
mysql_javatodev_app	172.25.0.9	3306
internet-banking-config-server	172.25.0.8	8090
internet-banking-service-registry	172.25.0.7	8081
internet-banking-api-gateway	172.25.0.6	8082
internet-banking-user-service	172.25.0.5	8083
internet-banking-fund-transfer-service	172.25.0.4	8084
internet-banking-utility-payment-service	172.25.0.3	8085
core-banking-service	172.25.0.2	8092

Postman Collection

Whole suite related postman collection can be sync using this URL.

Postman Collection

Clone this postman collection and switch to the LOCAL_DOCKER_SETUP Environment.

Test Data

By default we have dummy accounts details with user details under core-banking-database. Also the keycloak instance will deployed with default dataset matched to the application with all the realm, client and user data sets.

Proceed the testings with AUTHENTICATION API request under BANKING_CORE_MICROSERVICES COLLECTION.

Test Credentials : ib_admin@javatodev.com / 5V7huE3G86uB

Contribution

Microservices Inside This Project

Here this project consist of mainly 6 microservices and those are,

User service (banking-core-user-service) – This service includes all the operations under the User such as registrations and retrieval. Additionally, this API consumes keycloak REST API to register and manage the user base while using the local PostgreSQL database as well.
Fund transfer service (banking-core-fund-transfer-service) – This is the service that handles all the fund transfers between accounts and this API will push messages to a centralized RabbitMQ queue to use from the Notification service.
Payment service (banking-core-payments-service) – This service will include all the API endpoints to process Utility payments in this project and that will push notification messages to RabbitMQ as well.
Notification service – This API is registered under the service registry but consumes all the messages from RabbitMQ and pushes necessary notifications to the end users. - PENDING Development
Banking core service – This is the banking core service that acts as a dummy banking core with accounts, users, transaction details, and processors for banking transactions.