# VaughnVernon/IDDD_Samples

These are the sample Bounded Contexts from the book "Implementing Domain-Driven Design" by Vaughn Vernon:  http://vaughnvernon.co/?page_id=168

Repository: https://github.com/VaughnVernon/IDDD_Samples
Canonical: https://ross.abutalabs.com/products/iddd_samples
Language: Java
License: NOASSERTION
License Family: other
Last push: 2023-09-09T17:02:35+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": 4895, "days_push": 1089, "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 3943, forks 920 (observed 2026-08-28T04:08:30.232377+00:00)

## What it is
Sample Bounded Context codebases accompanying Vaughn Vernon's book 'Implementing Domain-Driven Design', written in Java. The projects demonstrate DDD patterns such as Event Sourcing, CQRS, and domain events using LevelDB, MySQL, Hibernate, and RabbitMQ.

## Use cases
- learn domain-driven design from working code
- see an event sourcing and CQRS example in Java
- study bounded context samples from the IDDD book
- understand how to publish domain events via REST and RabbitMQ
- compare ORM versus plain JDBC persistence in DDD models
- reference implementation of agile project management domain model

## When to choose
- you are reading 'Implementing Domain-Driven Design' and want companion code
- you want concrete Java examples of DDD tactical patterns
- you want to study event sourcing and CQRS without a framework

## When to avoid
- you need production-quality, maintained code for a real system
- you require Java 8+ compatibility (samples target Java 7)
- you want a ready-to-use DDD framework rather than reference samples

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools, database, serialization
- domain: developer-tools, education, backend, apis
- platform: jvm, cross-platform
- tags: domain-driven-design, ddd, bounded-contexts, event-sourcing, cqrs, book-samples, java, reference-code, docker

## Member repositories
- VaughnVernon/IDDD_Samples (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:30.232377+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 2026-08-29T18:24:36.352809+00:00, confidence not recorded.
  - readme: https://github.com/VaughnVernon/IDDD_Samples (fetched 2026-08-28T04:08:30.232377+00:00, sha 1eb01915bf13)
- Data as of 2026-08-30T08:39:29.467469+00:00.