# thombergs/buckpal

An example approach for implementing a Clean/Hexagonal Architecture

Repository: https://github.com/thombergs/buckpal
Canonical: https://ross.abutalabs.com/products/buckpal
Homepage: https://leanpub.com/get-your-hands-dirty-on-clean-architecture/overview
Language: Java
License Family: other
Last push: 2024-06-03T12:19:19+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2674, "days_push": 821, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2546, forks 733 (observed 2026-08-28T04:07:00.218136+00:00)

## What it is
A companion example repository for the book 'Get Your Hands Dirty on Clean Architecture', implementing a small web app in the Hexagonal/Clean Architecture style with Java and Spring Boot. It demonstrates structuring domain code independently of database and web concerns using dependency inversion.

## Use cases
- learn hexagonal architecture with a hands-on Java example
- see how to implement clean architecture in Spring Boot
- understand dependency inversion to decouple the domain layer
- learn how to enforce architectural boundaries in code
- find a reference project structure for ports and adapters
- study a multi-module Spring Boot application with Gradle

## When to choose
- you are reading the book and want the accompanying example code
- you want a practical Java/Spring reference for hexagonal architecture
- you are teaching or learning how to keep domain code independent of frameworks

## When to avoid
- you need a production-ready application template
- you work outside the JVM/Spring ecosystem
- you need a maintained library with a license for reuse in your own project

## Facets
- artifact type: learning-resource
- maturity: stable
- function: web-framework, developer-tools
- domain: web-development, developer-tools, tutorials
- platform: jvm
- tags: clean-architecture, hexagonal-architecture, spring-boot, example-project, book-companion, spring

## Member repositories
- thombergs/buckpal (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:00.218136+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:24:36.409423+00:00, confidence not recorded.
  - readme: https://github.com/thombergs/buckpal (fetched 2026-08-28T04:07:00.218136+00:00, sha 3f0b01a46ffc)
- Data as of 2026-08-30T08:39:29.467469+00:00.