Woovi Leaky Bucket Challenge

How would you develop a leaky bucket with nodejs, koa-js and typescript?

This challenge has as focus on implementing a leaky bucket strategy similar to the leaky bucket from BACEN.

Deliverables

• A node js http server
• A multi-tenancy strategy to be the owner of requests. For example, you could have users, and each user will have 10 tokens
• Implement an authentication of users with a Bearer Token
• This token must be sent in the request Authorization
• A mutation that simulates a query of a pix key
• A leaky bucket strategy completed

Leaky Bucket Strategy

• The query starts with 10 query tokens.
• Each request must consume 1 token. If success it keeps your token, if failed it must decrease 1 token from tokens.
• Every hour 1 token is added to the total number of tokens available for request
• 10 is the max limit of tokens
• Simulate requests validating token strategy with Jest to show that the leaky bucket works
• Generate a postman of the API to be consumed

Bonus

• It uses GraphQL in the Node Server
• A frontend that simulates the initiation of a Pix transaction
• It will fill two fields: pix key and value
• It must request the backend GraphQL
• It must use React and Relay at the frontend

Hard Core

Implement all Leaky Bucket from Dict

https://www.bcb.gov.br/content/estabilidadefinanceira/pix/API-DICT.html#section/Seguranca/Limitacao-de-requisicoes

Making this open source will get you a job in any Brazilian Fintech