Practical Domain-Driven Design with EF Core - Hossam Barakat

You have probably heard about Domain-Driven Design (DDD) and read about the benefits of building complex software applications with DDD, but struggled in applying DDD to your project especially with legacy code bases that have anemic domain models. In this session, we will cover the fundamentals of DDD with focus on the tactical patterns like aggregates, entities, value objects and domain events, how to use a pragmatic approach to craft a cohesive domain model, and finally how to leverage EF Core capabilities to persist the domain model into a relational database. By the end of this talk, you will be equipped with enough knowledge to apply DDD principles to both greenfield and brownfield projects without cluttering your domain model with dependencies on EF Core.
Check out more of our talks at:
ndcsydney.com
www.ndcconferences.com/

[@Deathhead68]

Love the content, really great to see a concrete example, particularly addressing your decision to stick with 1 model to be used by ef core and the domain. Keep it coming but upgrade the mic man! :)

[@everyonesview]

The quality of the content here is so good that I'm completely oblivious to what's happening in the audio side of things. Good work, pal! Awesome.

[@nickfotopoulos5323]

Always record from the presenters side. Then if the stream isn't cooperating, you can upload a better recording later.

[@HossamElDeen]

Thanks for the tip, I will try it next time.

[@PaulSebastianM]

@@HossamElDeen Please! Recording from the stream viewer's side is unacceptable for using as a learning material later. The compression and variable quality that can depend on the receiver's network speed and the streaming infrastructure's load, only makes your accent harder to ignore and long term listening and comprehension just... unbearable! :'(

[@HossamElDeen]

@@PaulSebastianM the suggestion is more of a backup plan :) and yes it should be recorded with high quality. Thanks for your input 🙏

[@KibbleWhite]

Yes, I tried listening but couldn't keep up due to the poor internet connection and audio artifacting. Sorry

[@djchrisi]

I don't understand. Even fashion bloggers are able to use a proper mic, but apparently some top notch software dudes aren't.

[@cuno2712]

I found that most of tech talk hosted by NDC have poor audio quality, i complain to them a lot of times but still the same. Btw this is great talk but non native english viewer will drop it because poor audio quality

[@fieryscorpion]

Excellent talk. But would have been even better if you had used projects instead of folders for putting your Domain, Infrastructure, Application etc. Do you have an example for how to structure projects with the correct project references? Would love to see how you work with Infrastructure, entities, DTOs and so on.

[@PaulSebastianM]

41:13 Having a domain service (the one for sending notification emails when a new subscription has been created) inherit from an EFCore interface, which is part of the persistence layer, doesn't seem right to me. It seems like a coupling of core domain logic to the persistence layer...

[@nemanja.djordjevic]

DomainEventDispatcher is infrastructure service, not domain. I am more concerned having dependency on MediatR INotification interface within domain. But there is a solution to this, which I already used in production app.

[@fredimachadonet]

Great talk Hossam. Thank you! :)

[@HossamElDeen]

Thanks Fredi 🙏.

[@SS-hp4op]

Excellent content. Thanks a lot.

[@gen2prog]

Thanks for video. I learned a lot from it. Keep it up.

[@naveddeshmukh9836]

Amazing. I learned a lot.

[@HossamElDeen]

Glad that you liked the talk

[@user-fi9zg1fv7r]

Very good content , Please can you share the link to the repo

[@fieryscorpion]

Great video, Can you please provide a link to the code repository? Thank you!

[@radoslav07]

Can you share these DDD snippets? Are they resharper templates?

[@PaulSebastianM]

24:48 shouldn't CalculateCurrentPeriodEndDate be called CalculateFirstPeriodEndDate or CalculateBillingPeriodEndDateStartingFromNow? I mean that's what the code seems to do, calculate the end date for billing for the very first billing period, because the end date is always calculated starting from DateTime.UtcNow. To calculate the current period end date, you would need to start from the last period's end date.

[@mhDuke]

cheers yabu hossam. جزيت عنا خيراً

[@HossamElDeen]

آمين وإياكم

[@khalidalasi2031]

Thanks ya Hossam this is helpful and rich

[@rafigeniuscs]

Looking source code, please post the URL if its available on Git

[@farhadshariat]

thanks for great content ...for example why did you new subscribtion is that need for unit testing? cause events hold data of command and it save the changes in database I dont really get it though

[@amrosaad9730]

Thank You.

[@vitek0585]

Great example but the sounds quality is bad. Please share source code

[@HossamElDeen]

Thanks for the feedback. HYG github.com/hossambarakat/Subscriptions-DDD

[@vitek0585]

@@HossamElDeen 👍Thanks a lot)

[@leifchen1522]

where is the full code sample?

[@mlukier]

I've found it here: github.com/hossambarakat/Subscriptions-DDD

[@watchchat]

Audio is choppy

[@IAmQwame]

great content

[@ravijsoni2477]

I cannot see the project structure on the left in the vs code. Please share your github repo link, if you can. Thanks.

[@martymcfly9396]

Content of the presentation is great, but unfortunately the quality of voice destroys the positive feelings.

[@aneeshs9442]

great content , can you share the source code link

[@johnmchale1]

very poor audio, puts you off wanting to watch

[@cai0]

yep.. was very interested in the subject, but gave up after 4 minutes.

[@gedmoretta6825]

The subject ie very interesting but the poor audio has put me off

[@HossamElDeen]

Thanks for the feedback. Apologies for the audio quality :).

[@AShahabov]

Bad audio(

[@delysid604]

Fix ur sound

[@kevinmic9845]

عمل ممتاز ياخ حسام بارك الله فيك ممكن رابط الكود لان دقة الفديو غير واضحة

[@shenth27]

Bad audio quality..