Build 2 Backend services which manages user’s accounts and transactions (send/withdraw).
In Account Manager service, we have:
- User: Login with Id/Password
- Payment Account: One user can have multiple accounts like credit, debit, loan...
- Payment History: Records of transactions
In Payment Manager service, we have:
- Transaction: Include basic information like amount, timestamp, toAddress, status...
- We have a core transaction process function, that will be executed by
/send
or/withdraw
API:
function processTransaction(transaction) {
return new Promise((resolve, reject) => {
console.log('Transaction processing started for:', transaction);
// Simulate long running process
setTimeout(() => {
// After 30 seconds, we assume the transaction is processed successfully
console.log('transaction processed for:', transaction);
resolve(transaction);
}, 30000); // 30 seconds
});
}
// Example usage
let transaction = { amount: 100, currency: 'USD' }; // Sample transaction input
processTransaction(transaction)
.then((processedTransaction) => {
console.log('transaction processing completed for:', processedTransaction);
})
.catch((error) => {
console.error('transaction processing failed:', error);
});
Features:
- Users need to register/log in and then be able to call APIs.
- APIs for 2 operations send/withdraw. Account statements will be updated after the transaction is successful.
- APIs to retrieve all accounts and transactions per account of the user.
- Write Swagger docs for implemented APIs (Optional)
- Auto Debit/Recurring Payments: Users should be able to set up recurring payments. These payments will automatically be processed at specified intervals. (Optional)
- Recommend using authentication 3rd party: Supertokens, Supabase...
NodeJs
for API server (Fastify
framework is the best choices)PostgreSQL/MongoDB
for Database. Recommend usingPrisma
for ORM.Docker
for containerization. Recommend usingdocker-compose
for running containers.
- Good document/README to describe your implementation.
- Make sure app functionality works as expected. Run and test it well.
- Containerized and run the app using Docker.
- Using
docker-compose
or any automation script to run the app with single command is a plus. - Job schedulers utilization is a plus