A Digital Bank API. This is a portfolio project that allow users to send and receive fake money to simulate the basic transactions of a bank. Users can make money earn interest on savings and make all basics operations of a user (CRUD).
TypeScript: Strongly typed programming language that builds on JavaScriptNestJS: Framework in Node ecosystem for building scalable server-side applications.TypeORM: ORM (object-relational mapper) library that link the application up to a relational database database.PostgreSQL: Relational database used for store all data from users, transations and savings.Redis: In-memory data store used for store whitelist JWT tokens and jobs for sending emails.docker-compose and Docker: Technologies that respectively manage multiple containers (PostgreSQL, Redis) and build application to deploy.Scheduler: Execute a task at a fixed date/time create by a Cron. In this project is used a package provided by NestJS: @nestjs/scheduleJobs: Taks in to be executed in a Queue. In this project jobs are used for process emais and interest savings in background. In interest savings context, every midnight a Cron is fired to increment 0.1% of all savings from all users in the database.Transactions: Database resource that ensures that all operations within a scope succeed. Otherwise, all operations are cancelled. In this project transation are used to send money and to increment 0.1% of all savings from all users in the database every midnight.AWS S3: AWS resource to store objects in cloud. Avatar photos from users are stored in AWS S3 bucket.GitHub Actions: Workflows that are used for Continuous Integration. In this project GitHub Actions is used for scan docker images (Trivy), scan code (CodeQL) and build image of the project to Docker Hub.Jest: Library for unit test.Python Locust: Library from Python for load testing.Swagger: Library for endpoints documentation. NestJS provide a native solution for documentation: @nestjs/swagger .
Each commit is analyzed for known security vulnerabilities using CodeQL for code. Each pull request or merge is analyzed by Trivy for docker images. Both analyzes are workflows that are dispatched by pull requests of merges.