Service for working with user balance

TODO

• Write test
• Setup Github CI

Requirements

make, docker, docker-compose

optional

golangci-lint, apache benchmark, newman, go-cleanarch

k6 brew instal k6

Initialize database

create table from file data\postgres\migrations\init.sql

insert data from file data\postgres\migrations\payment_public_account.sql

Start app

make bin/money
make up

Benchmark for read transactions

make bench

server running on localhost:8000 http://localhost:8000

swagger ui running on localhost:80 http://localhost:80

Use cases

• Get the user's current balance.
• Get the transaction history of the account.
• Transfer funds from user to user.
• Debit or credit of funds from account.
• Converting balance to other currencies.

Improvments

• Use Credit/Debit transaction account, Transaction(id, account_id uuid, credit int, debit int, desc: string)

Database UML

Pagination when sorting by date is implemented via the cursor to optimize the OFFSET operation

The user rarely looks at the entire transaction history when sorting by any gender. Therefore, it is possible to save data for users and update it during financial transactions.

Improvements in architecture to increase fault tolerance