This is a fully functional Rest Api that handles Player's monetary transactions

• Create a new player
• Update an existing player
• Get a specific player based on player Id
• Get all systems players

• Add a credit transaction for a player
• Add a debit transaction for a player (Only if enough credit exist for selected player)
• Get player balance in system base currency (USD)
• Get all transaction history for a player

• Integrated with openexchangerates.org rest api for live exchange rates, current free subscription limits service to one base currency (USD), however system can be easily updated to support multiple base currencies if using a paid subscription

• Java 11
• Maven
• Spring Boot
• Swagger
• Orika
• JPA
• H2 (Can be switch to any Relational DB)
• Liquibase
• Feign
• Lombok
• Docker
• Junit 5
• Mockito
• WireMock
• Caching - Ehcache (For clustered cache redis can be implemented instead)

• Java 11
• Maven
• Docker is required to run the application

• Go in the project parent folder and from the terminal execute mvn clean install (make sure your default jdk is java 11+ or else run from IDE)
• Access api module and execute docker-compose build && docker compose up
• All APIs can be accessed using http://localhost:8080/ and swagger documentation can be accessed from http://localhost:8080/swagger-ui/ (Different port can be expose inside docker-compose.yml)

Application was written and designed for Production releasing, suggested changes for production release:

• Redis Caching for multi instance support (This enables horizontal clustering)
• Implementation of a more Robust relational Database such as MySql, Postsgress instead of H2 (This enables horizontal clustering)
• Database locking mechanism such as pessimistic and optmistic locking
• Integration with multiple Exchange Rate services for better exchange rates and redundancy (Currently only 1 exchnage provider)
• Support for multiple base rates (Currently limited to a single base currency due to third party api limitations)
• Use of Cloud config server for properties management (Application properties are set directly inside the project should be externalized) (This enables horizontal clustering)
• Improved error code structure

For any additional information please feel free to contact me by email on [email protected]