# citerus/dddsample-core

This is the new home of the original DDD Sample app (previously hosted at sf.net)..

Repository: https://github.com/citerus/dddsample-core
Canonical: https://ross.abutalabs.com/products/dddsample-core
Language: Java
License: MIT
License Family: permissive
Last push: 2025-06-02T09:09:44+00:00

## Health v2 (maintenance only)
Score: 43/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 24, release rhythm 35, longevity 100
- inputs: {"age_days": 4232, "days_push": 457, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5287, forks 1500 (observed 2026-08-28T04:09:14.246904+00:00)

## What it is
The official Domain-Driven Design (DDD) sample application, a joint effort by Eric Evans' Domain Language and Citerus, originally hosted on SourceForge. It is a Spring Boot web application modeling a cargo shipping domain to demonstrate DDD patterns such as entities, aggregates, repositories, and domain services.

## Use cases
- learn domain-driven design with a real codebase
- reference implementation of DDD patterns in Java
- see how to structure a Spring Boot app with DDD layers
- study aggregate and repository design in a shipping domain
- teach tactical DDD patterns to a team
- explore a REST handling report API example

## When to choose
- you are learning or teaching DDD in a Java/Spring context
- you want a canonical reference for DDD tactical patterns
- you need a realistic example domain for architecture discussions

## When to avoid
- you need a production-ready shipping or logistics system
- you work outside the JVM/Spring ecosystem
- you want a minimal example rather than a full application

## Facets
- artifact type: application
- maturity: maintenance
- function: web-framework, api-framework, http-server, documentation
- domain: developer-tools, education, web-development, tutorials
- platform: jvm, cross-platform
- tags: domain-driven-design, ddd, sample-application, spring-boot, reference-implementation, java, learning, web-server

## Member repositories
- citerus/dddsample-core (main) score 43

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:14.246904+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 2026-08-29T17:59:14.984515+00:00, confidence not recorded.
  - readme: https://github.com/citerus/dddsample-core (fetched 2026-08-28T04:09:14.246904+00:00, sha 45d58be07b8f)
- Data as of 2026-08-30T08:39:29.467469+00:00.