• Yape Code Challenge 🚀
  • Table of Contents
  • Candidate Information
  • Problem
  • Tech Stack
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• Name: David Andrés Garza Medina
• LinkedId Profile: https://www.linkedin.com/in/david-garza-medina/
• Personal Website: https://davidgarza.me/
• Email: [email protected]

Every time a financial transaction is created it must be validated by our anti-fraud microservice and then the same service sends a message back to update the transaction status. For now, there are only three transaction statuses:

1. Pending
2. Approved
3. Rejected

Every transaction with a value greater than 1000 should be rejected.

  flowchart LR
    Transaction -- Save Transaction with pending Status --> transactionDatabase[(Database)]
    Transaction --Send transaction Created event--> Anti-Fraud
    Anti-Fraud -- Send transaction Status Approved event--> Transaction
    Anti-Fraud -- Send transaction Status Rejected event--> Transaction
    Transaction -- Update transaction Status event--> transactionDatabase[(Database)]

1. Backend: Node.js with Express.js as the framework and Sequelize as ORM.
2. Database: PostgreSQL.
3. Message Broker: Kafka.

1. Transaction creation:

{
  "accountExternalIdDebit": "Guid",
  "accountExternalIdCredit": "Guid",
  "tranferTypeId": 1,
  "value": 120
}

2. Transaction retrieval:

{
  "transactionExternalId": "Guid",
  "transactionType": {
    "name": ""
  },
  "transactionStatus": {
    "name": ""
  },
  "value": 120,
  "createdAt": "Date"
}