# fatihhernn/spring-boot-ecommerce architecture

> Architecture diagram of the GitHub repository fatihhernn/spring-boot-ecommerce, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-05-12). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/fatihhernn/spring-boot-ecommerce
- Repository: https://github.com/fatihhernn/spring-boot-ecommerce

## Overview

1. **Repository shape**
   - This is a single-module **Spring Boot** backend built with **Maven** (`pom.xml`, Maven wrapper files).
   - The codebase is small and centered on **domain + persistence + REST exposure**, rather than a layered service/controller application.

2. **Application entrypoint**
   - `SpringBootEcommerceApplication` is the bootstrap class that starts the Spring context and wires the application together.
   - There is no separate server/runtime module; the app runs as one Spring Boot process.

3. **Core domain model**
   - The main business entities live under `entities/`: `Product`, `ProductCategory`, `Country`, and `State`.
   - This suggests an e-commerce catalog plus geography/address support, likely for shipping or checkout-related data.

4. **Persistence boundary**
   - The `dao/` package contains Spring Data repository interfaces for each entity.
   - These repositories are the main data-access boundary; they abstract database operations and likely provide CRUD plus query methods without handwritten SQL.

5. **REST/data exposure layer**
   - The presence of `MyDataRestConfig` indicates the project uses **Spring Data REST** to expose repository-backed resources over HTTP.
   - That means the repositories are not just internal persistence objects; they are likely published directly as REST endpoints with some custom configuration.

6. **Data flow**
   - External clients talk to the Spring Boot app over HTTP.
   - Requests hit the Spring Data REST layer, which delegates to repository interfaces.
   - Repositories persist/load entity objects through Spring Data/JPA to the configured database.

7. **Configuration boundary**
   - `application.properties` holds runtime configuration such as database connectivity and Spring settings.
   - `MyDataRestConfig` is the application-specific customization point for how repository resources are exposed.

8. **Security roadmap in the README**
   - The README lists security-related work items: login/logout, user registration, VIP access, browser refresh handling, and secure order history.
   - Those concerns are important to the intended architecture, but they are **not yet represented in the file tree** by dedicated security, user, or order modules.

9. **What is not present yet**
   - There are no visible controller, service, DTO, or frontend source folders.
   - That implies this repo is currently a **thin backend/data service**, with domain logic still concentrated in entities/repositories and framework configuration.

10. **Testing and build**
   - `SpringBootEcommerceApplicationTests` is a basic Spring Boot test entrypoint, likely for context loading.
   - The project is built and run through Maven, with the wrapper checked in for reproducible builds.

11. **Architecture diagram takeaway**
   - Draw this as: **HTTP clients → Spring Boot app → Spring Data REST/repository layer → JPA entities → database**.
   - Add a side box for **configuration** (`application.properties`, `MyDataRestConfig`) and a separate note for **planned security features** from the README.

Main entry points: [`src/main/java/com/fatihhernn/ecommerce/config/MyDataRestConfig.java`](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/config/MyDataRestConfig.java) (Data REST), [`src/main/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplication.java`](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplication.java) (Boot app), [`pom.xml`](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/pom.xml) (Maven), [`src/main/java/com/fatihhernn/ecommerce/dao/CountryRepository.java`](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/CountryRepository.java) (Country repo)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_build["Build"]
  node_maven_build["Maven<br/>build tool<br/>[pom.xml]"]
  node_maven_wrapper["Wrapper"]
  node_tests["Context test<br/>Spring Boot test"]
end

subgraph group_runtime["Runtime"]
  node_app_bootstrap["Boot app<br/>Spring Boot main"]
  node_data_rest["Data REST<br/>REST exposure"]
end

subgraph group_config["Config"]
  node_app_config["App config<br/>properties"]
end

subgraph group_data["Data"]
  node_country_repo["Country repo<br/>Spring Data repository"]
  node_product_repo["Product repo<br/>Spring Data repository"]
  node_category_repo["Category repo<br/>Spring Data repository"]
  node_state_repo["State repo<br/>Spring Data repository"]
  node_product[("Product<br/>JPA entity<br/>[Product.java]")]
  node_category[("Category<br/>JPA entity")]
  node_country[("Country<br/>JPA entity<br/>[Country.java]")]
  node_state[("State<br/>JPA entity<br/>[State.java]")]
end

node_http_clients(("HTTP clients<br/>external client"))
node_security_roadmap["Security roadmap<br/>planned features<br/>[README.md]"]
node_database[("Database<br/>persistence store")]

node_http_clients -->|"HTTP"| node_data_rest
node_data_rest -->|"exposes"| node_country_repo
node_data_rest -->|"exposes"| node_product_repo
node_data_rest -->|"exposes"| node_category_repo
node_data_rest -->|"exposes"| node_state_repo
node_app_bootstrap -->|"enables"| node_data_rest
node_app_bootstrap -->|"loads"| node_app_config
node_country_repo -->|"manages"| node_country
node_product_repo -->|"manages"| node_product
node_category_repo -->|"manages"| node_category
node_state_repo -->|"manages"| node_state
node_country -->|"stored in"| node_database
node_product -->|"stored in"| node_database
node_category -->|"stored in"| node_database
node_state -->|"stored in"| node_database
node_maven_build -->|"builds"| node_app_bootstrap
node_maven_wrapper -->|"pins"| node_maven_build
node_tests -->|"tests"| node_app_bootstrap
node_security_roadmap -.->|"future"| node_data_rest

click node_maven_build "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/pom.xml"
click node_maven_wrapper "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/.mvn/wrapper/maven-wrapper.properties"
click node_app_bootstrap "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplication.java"
click node_data_rest "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/config/MyDataRestConfig.java"
click node_country_repo "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/CountryRepository.java"
click node_product_repo "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/ProductRepository.java"
click node_category_repo "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/ProductCategoryRepository.java"
click node_state_repo "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/StateRepository.java"
click node_product "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/Product.java"
click node_category "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/ProductCategory.java"
click node_country "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/Country.java"
click node_state "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/State.java"
click node_app_config "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/resources/application.properties"
click node_security_roadmap "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/README.md"
click node_tests "https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/test/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplicationTests.java"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_maven_build,node_maven_wrapper,node_tests toneBlue
class node_app_bootstrap,node_data_rest toneAmber
class node_app_config toneMint
class node_country_repo,node_product_repo,node_category_repo,node_state_repo,node_product,node_category,node_country,node_state toneRose
class node_http_clients,node_security_roadmap,node_database toneNeutral
```

## Components

### Build

Maven-based build and test entrypoints.

- [Maven](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/pom.xml): build tool · Single-module Maven build and dependency management. · `pom.xml`
- [Wrapper](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/.mvn/wrapper/maven-wrapper.properties): build wrapper · Checked-in Maven wrapper for reproducible local builds. · `.mvn/wrapper/maven-wrapper.properties`
- [Context test](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/test/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplicationTests.java): Spring Boot test · Basic application context test entrypoint. · `src/test/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplicationTests.java`

### Runtime

Spring Boot application bootstrap and HTTP exposure.

- [Boot app](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplication.java): Spring Boot main · Application entrypoint that starts the Spring context. · `src/main/java/com/fatihhernn/ecommerce/SpringBootEcommerceApplication.java`
- [Data REST](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/config/MyDataRestConfig.java): REST exposure · Spring Data REST layer exposing repository-backed resources. · `src/main/java/com/fatihhernn/ecommerce/config/MyDataRestConfig.java`

### Config

Application-specific runtime configuration.

- [App config](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/resources/application.properties): properties · Runtime configuration such as datasource and Spring settings. · `src/main/resources/application.properties`

### Data

Domain entities and Spring Data repositories.

- [Country repo](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/CountryRepository.java): Spring Data repository · Persistence boundary for countries. · `src/main/java/com/fatihhernn/ecommerce/dao/CountryRepository.java`
- [Product repo](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/ProductRepository.java): Spring Data repository · Persistence boundary for products. · `src/main/java/com/fatihhernn/ecommerce/dao/ProductRepository.java`
- [Category repo](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/ProductCategoryRepository.java): Spring Data repository · Persistence boundary for product categories. · `src/main/java/com/fatihhernn/ecommerce/dao/ProductCategoryRepository.java`
- [State repo](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/dao/StateRepository.java): Spring Data repository · Persistence boundary for states. · `src/main/java/com/fatihhernn/ecommerce/dao/StateRepository.java`
- [Product](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/Product.java): JPA entity · Core catalog item entity. · `src/main/java/com/fatihhernn/ecommerce/entities/Product.java`
- [Category](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/ProductCategory.java): JPA entity · Product classification entity. · `src/main/java/com/fatihhernn/ecommerce/entities/ProductCategory.java`
- [Country](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/Country.java): JPA entity · Geography entity used for address or shipping data. · `src/main/java/com/fatihhernn/ecommerce/entities/Country.java`
- [State](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/src/main/java/com/fatihhernn/ecommerce/entities/State.java): JPA entity · Region entity linked to countries. · `src/main/java/com/fatihhernn/ecommerce/entities/State.java`

### Other components

- **HTTP clients**: external client · Outside callers consuming the REST endpoints.
- [Security roadmap](https://github.com/fatihhernn/spring-boot-ecommerce/blob/master/README.md): planned features · README-listed future work: login, registration, VIP access, secure order history. · `README.md`
- **Database**: persistence store · Back-end data store accessed through Spring Data repositories.

## Connections

- HTTP clients → Data REST: HTTP · Clients call the REST-exposed repository resources.
- Data REST → Country repo: exposes · REST layer publishes repository-backed country resources.
- Data REST → Product repo: exposes · REST layer publishes repository-backed product resources.
- Data REST → Category repo: exposes · REST layer publishes repository-backed category resources.
- Data REST → State repo: exposes · REST layer publishes repository-backed state resources.
- Boot app → Data REST: enables · Bootstraps the Spring Data REST configuration.
- Boot app → App config: loads · Application startup reads runtime properties.
- Country repo → Country: manages · Repository persists and loads country entities.
- Product repo → Product: manages · Repository persists and loads product entities.
- Category repo → Category: manages · Repository persists and loads category entities.
- State repo → State: manages · Repository persists and loads state entities.
- Country → Database: stored in · Entity data is persisted in the backing database.
- Product → Database: stored in · Entity data is persisted in the backing database.
- Category → Database: stored in · Entity data is persisted in the backing database.
- State → Database: stored in · Entity data is persisted in the backing database.
- Maven → Boot app: builds · Maven compiles and packages the application.
- Wrapper → Maven: pins · Wrapper standardizes the Maven version used by developers.
- Context test → Boot app: tests · Basic Spring Boot test verifies the application context starts.
- Security roadmap → Data REST: future · Planned security features likely sit around the current REST exposure.