Exchange Rates

This project is a Go-based API server that retrieves and caches exchange rate data and currency lists from external APIs. It is designed to minimize API calls to external services by using an in-memory caching system that refreshes data every hour.

Prerequisite

• Go version 1.23.3

Steps to Run the Application

1. Set the APP_ID Environment Variable:

   • On Linux/Mac:

     export APP_ID="your_api_key"

   • On Windows (PowerShell):

     $env:APP_ID="your_api_key"

2. Run the Application:

   go mod tidy
   go run main.go

The server will now use the APP_ID from the environment variable, making it more secure and configurable.

Test

• http://localhost:8080/api/latest
• http://localhost:8080/api/currencies