Mongo ATLAS for cloud data storage

             Node JS / Express for application
             
             Azure for deployment

  Endpoint: 1. https://koinx.azurewebsites.net/normaltransaction?address=Your-Address-Here

  Working:      It fetches and stores the transactions in the database against the address.

  Example:      https://koinx.azurewebsites.net/normaltransaction?address=0xce94e5621a5f7068253c42558c147480f38b5e0d

  On Success:   {"saved":"success"}

  On Failure:   {"saved":"failed"}

  Endpoint: 2. https://koinx.azurewebsites.net/getbalance?address=Your-Address-Here

  Working:      It fetches the transactions and Ethereum Price from the database against the address and calculates the balance.

  Example:      https://koinx.azurewebsites.net/getbalance?address=0xce94e5621a5f7068253c42558c147480f38b5e0d

  On Success:   {"userBalance":163895865906129440,"ethereumPrice":105090}

  On Address Not Found:  {"userBalance": "Address Not found", "ethereumPrice": 103956}

                  ├── controllers
                  │   ├── getBalanceController.js         // To Fetch transactions and the latest Ethereum price from database and calculating the balance. 
                  │   └── normalTransactionController.js  // To Fetch the transactions and store them in database against the address.
                  ├── database.js                         // For instantiating the MONGO ATLAS
                  ├── main.js                             // Entry file for the application
                  ├── models
                  │   ├── fetchPriceModel.js              // Schema for storing the Ethereum price.
                  │   └── normalTransactionModel.js       // Schema for storing the normal transactions.
                  ├── package-lock.json
                  ├── package.json
                  ├── routes
                  │   ├── getBalanceRoute.js              // Router for the get request; to fetch the balance and ethereum price.
                  │   └── normalTransactionRoute.js       // Router for the get request; to store the transaction in database.
                  ├── utils
                  │   └── fetchEtereumPrice.js            // Utils file that fetches the Ethereum Price and stores in database at an interval of 10 minutes.
                  └── web.config                          // Config file for azure deployment.

  Note: env file have not been uploaded, to test the project create your own .env with the structure:
  
  API_KEY 
  
  ATLAS_USERNAME 
  
  ATLAS_PASSWORD
  
  ATLAS_DBNAME