Damilola99-web / mysql

Native mysql, Service-models-controllers uncle bob architecture 2023

Start application

npm start

Edge case

• User cannot transfer to himself
• User cannot transfer to non-existing user
• User cannot transfer more than his balance (insufficient balance)
• User cannot transfer negative amount
• Cash back on all withdrawals
• Redis cache for user profile AND STATISTICS
• You cannot transfer more than 1000 USD without being a premium user

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• Added joi validation - fail fast principle
• Clean table before creating new tables in order to avoid foreign key constraint error
• Overdraft limit for premium users
• Transaction history with pagination
• handle unhandled exceptions e.g if your port is already in use
• Implementing account freeze or suspen sion for suspicious account activity by administrators [rbac ]

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TODO

• Implementing two-factor authentication for secure transactions
• Setting transaction limits based on user account type (e.g. savings, checking, business)
• Handling currency exchange rates and conversions for international transactions
• Implementing a transaction timeout to prevent unauthorized access or fraud
• Managing concurrent transactions to avoid race conditions and ensure data integrity
• Handling failed transactions and providing appropriate error messages to users
• Implementing transaction fees for certain types of transactions (e.g. international transfers, expedited transfers)
• Handling edge cases related to transaction reversal or refund requests from users
• Managing account closure and data retention policies in compliance with relevant regulations
• Handling large transactions or transfers that may require additional verification or approval from the bank
• Implementing transaction categorization or tagging for budgeting or expense tracking purposes
• Handling scenarios where the user's bank account is compromised or hacked, and implementing appropriate security measures such as user authentication, password resets, and account recovery processes.

Start a redis container

Run redis container

docker run -d --name logan redis

run redis container with port mapping

docker run -d --name logan -p 6379:6379 redis

Access redis container

docker exec -it logan bash docker exec -it logan redis-cli

OR

Download redis

wget http://download.redis.io/releases/redis-5.0.5.tar.gz

Get all keys

KEYS *

Make sure you start server

Delete a key in redis

127.0.0.1:6379> DEL "user:[e-mail]"