# Aggregation

## 📕 Articles

- [Processing multiple aggregates – transactional vs eventual consistency](https://www.kamilgrzybek.com/design/processing-multiple-aggregates-transactional-vs-eventual-consistency/)
- [Handling concurrency – Aggregate Pattern and EF Core](http://www.kamilgrzybek.com/design/handling-concurrency-aggregate-pattern-and-ef-core/) 
- [Aggregate (Root) Design: Behavior & Data](https://codeopinion.com/aggregate-root-design-behavior-data/?utm_source=feedly&utm_medium=rss&utm_campaign=aggregate-root-design-behavior-data) 
- [Strengthening your domain: Aggregate Construction](https://lostechies.com/jimmybogard/2010/02/24/strengthening-your-domain-aggregate-construction/)
- [Idempotent Aggregates](https://codeopinion.com/idempotent-aggregates/)
- [Strengthening your domain: Aggregate Construction](https://lostechies.com/jimmybogard/2010/02/24/strengthening-your-domain-aggregate-construction/)
- [Link to an aggregate: reference or Id?](https://enterprisecraftsmanship.com/2016/03/08/link-to-an-aggregate-reference-or-id/)
- [Entities, Value Objects, Aggregates and Roots](https://lostechies.com/jimmybogard/2008/05/21/entities-value-objects-aggregates-and-roots/)
- [How to Handle Updates on Aggregates - Domain-Driven Design w/ TypeScript](https://khalilstemmler.com/articles/typescript-domain-driven-design/updating-aggregates-in-domain-driven-design/)
- [DDD: guidance on updating multiple properties of entities](https://stackoverflow.com/questions/33698225/ddd-guidance-on-updating-multiple-properties-of-entities)
- [Don’t Create Aggregate Roots](https://udidahan.com/2009/06/29/dont-create-aggregate-roots/)
- [Handling concurrency – Aggregate Pattern and EF Core](http://www.kamilgrzybek.com/design/handling-concurrency-aggregate-pattern-and-ef-core/)
- [Link to an aggregate: reference or Id?](https://enterprisecraftsmanship.com/posts/link-to-an-aggregate-reference-or-id/)
- [Avoid Exposing Collections Directly as Properties](https://ardalis.com/avoid-collections-as-properties/?utm_sq=grcpqjyka3)
- [Aggregate Responsibility Design](https://ardalis.com/aggregate-responsibility-design/)
- [Entities - ABP](https://docs.abp.io/en/abp/latest/Entities)
- [Aggregate pattern in Domain-Driven Design](https://medium.com/eventuous/aggregate-pattern-in-domain-driven-design-7ad823475099)
- [DDD Beyond the Basics: Mastering Aggregate Design](https://medium.com/ssense-tech/ddd-beyond-the-basics-mastering-aggregate-design-26591e218c8c) ⭐
- [Domain-Driven Design: A Walkthrough of Building an Aggregate](https://betterprogramming.pub/domain-driven-design-a-walkthrough-of-building-an-aggregate-c84113aa9975) ⭐
- [Domain Driven Design: Patterns for Aggregate Creation Mastery](https://www.dandoescode.com/blog/domain-driven-design-patterns-for-aggregate-creation-mastery) ⭐
- [DDD: Entity vs. Value Object vs. Aggregate Root](https://mbarkt3sto.hashnode.dev/ddd-entity-vs-value-object-vs-aggregate-root) ⭐
- [Classes internal to an aggregate: entities or value objects?](https://enterprisecraftsmanship.com/posts/classes-internal-to-an-aggregate-entities-or-value-objects/)

## 📺 Videos

- [Aggregate (Root) Design: Separate Behavior & Data for Persistence](https://www.youtube.com/watch?v=GtWVGJp061A) ⭐
- [All our aggregates are wrong - Mauro Servienti](https://www.youtube.com/watch?v=hev65ozmYPI) ⭐
- [Adding Aggregate Example to Clean Architecture solution template](https://www.youtube.com/watch?v=kxuGtgOimGA)
- [Aggregate Design: Using Invariants as a Guide](https://www.youtube.com/watch?v=64ngP-aUYPc) 
- [Decomposing CRUD to a Task Based UI](https://www.youtube.com/watch?v=DjZepWrAKzM)
- [ALWAYS Valid Domain Model](https://www.youtube.com/watch?v=JZetlRXdYeI)
- [Slim down your aggregates! - Oskar Dudycz](https://www.architecture-weekly.com/p/webinar-8-slim-down-your-aggregates)

## Samples
- [oskardudycz/slim-down-your-aggregate](https://github.com/oskardudycz/slim-down-your-aggregate)
- [oskardudycz/kandddinsky2024](https://github.com/oskardudycz/kandddinsky2024)