Infrastructure and tools

Backend (Spring Microservices)

Name	Type	Description
Spring	Framework	Purpose: Foundation for building scalable, production-ready Java applications. Use: Used with Spring Boot to create each microservice. Spring offers modules for web applications, security, data access, and messaging, which are essential for microservices.
MongoDB	Database	Purpose: NoSQL database optimized for flexible, schema-less storage. Use: Often chosen for microservices needing high scalability and flexibility. Its document-oriented nature fits well with JSON-like data structures and is ideal for real-time applications.
Redis	Database	Purpose: In-memory data store, used as a cache or message broker. Use: Used for caching frequently accessed data to improve performance or as a message broker for event-driven communication between services.
Keycloak	Tool	Purpose: Open-source Identity and Access Management. Use: Manages authentication and authorization, provides single sign-on, and integrates with OAuth2 and OpenID Connect for secure microservice access.
MinIO	Database	Purpose: Object storage similar to Amazon S3. Use: Used for storing large unstructured data like media files or backups, often needed in applications with extensive data storage needs.

Frontend (React Native Mobile App)

Name	Type	Description
React Native	Framework	Purpose: Framework for building native mobile apps with JavaScript and React. Use: Allows for a shared codebase between iOS and Android, speeding up mobile development while retaining a native look and feel.
Redux	Library	Purpose: State management library. Use: Manages application state in a predictable way across React components, which is essential for handling data from microservices and managing app state globally.
Axios	Library	Purpose: HTTP client to make requests to APIs. Use: Facilitates communication between the React Native front end and backend microservices, enabling data retrieval and interaction.
Expo	Framework	Purpose: Set of tools to make React Native app development easier. Use: Simplifies testing and deploying React Native apps, especially in the early stages, by providing a suite of APIs and services.
Nativewind	Framework	Purpose: CSS framework that allows Tailwind CSS styling within React Native. Use: Enables fast and flexible UI styling in React Native applications, similar to Tailwind CSS in web applications.

Testing

Name	Type	Description
JUnit	Framework	Purpose: Java testing framework. Use: Unit testing of individual Spring microservices, ensuring functionality works as expected before integration.
Jest	Framework	Purpose: JavaScript testing framework. Use: Used for testing the React Native front end, especially functional and unit tests for components, to maintain a high-quality mobile application.

DevOps & CI/CD

Name	Type	Description
Docker	Tool	Purpose: Containerization platform. Use: Packages each microservice as a lightweight container, enabling easy deployment and scaling across different environments.
Kubernetes	Tool	Purpose: Container orchestration tool. Use: Manages and scales Docker containers across distributed systems, ensuring that microservices are reliable, resilient, and scalable.
Helm	Library	Purpose: Kubernetes package manager. Use: Simplifies the deployment of complex Kubernetes applications, like Spring-based microservices, by using pre-configured charts.

Monitoring & Observability

Name	Type	Description
Grafana	Tool	Purpose: A visualization tool for monitoring metrics. Use: Provides dashboards for visualizing metrics from services and system health data, helping to identify performance issues.
Prometheus	Tool	Purpose: Monitoring and alerting toolkit. Use: Collects and stores metrics from microservices, enabling real-time monitoring and setting up alerts based on specified thresholds.

Code Quality & Analysis

Name	Type	Description
SonarQube	Tool	Purpose: Continuous inspection tool for code quality and security. Use: Runs static code analysis on both backend (Spring) and frontend (React Native) codebases to enforce coding standards, detect bugs, and ensure security compliance.
ESLint	Tool	Purpose: Linter for JavaScript and TypeScript. Use: Ensures consistent code quality and enforces coding standards across the React Native application, reducing bugs and improving maintainability.