Excellent Book Shop

Excellent BookShop is a Cloud Native Application with Spring Boot and Kubernetes.

Systems:

• Order Service
• Deployment
• Edge Service
• Config Service

Properties of Cloud Native Applications

Scalability:

Loose Coupling

Resilience

Manageability

Observability

Use cases:

Catalog Service:

• View the list of books in the catalog
• Search books by their ISBN (International Standard Book Number)
• Add a new book to the catalog
• Edit information for an existing book
• Remove a book from the catalog

Order Service

• Submit an Orders
• Get Book detail from Excellent Catalog Service

[Edge Service]

• Authenticate and Authorize user
• Provide API Gateway and handling cross-cutting concerns

Config Service

• Fetch configurations from a repository
• Third Party Config Server

[Dispatcher Service]

Patterns and Technologies

• 12 Factors and Beyond Practices and Patterns
• Service-based Architecture

Web and Interactions

• RESTFul web services using Spring MVC (blocking I/O, synchronous)
• Spring WebFlux / Reacting Programming (non-blocking I/O, asynchronous)

Data

• PostgresSQL: relational database for permanently store data
• Spring Data JDBC (imperative)
• Spring Data R2DBC (reactive)
• Flyway: evolve a data source and manage schema migrations
• Redis, Spring Session: externalize the session storage
• Docker: containerize application

Kubernetes

• Minikube: Local K8s Cluster
• Tilt: An open-source tools for automate k8s workflow
• Octant: Visualize K8s workloads
• Kubeval: Validating K8s YAML Manifests.

Configuration

• Using External Configuration
• Spring Cloud Config