Bastian Waidelich

Chat-like interfaces replacing traditional UI are gradually exposing that *events* are the fundamental source of truth for state management

What is a #tag in the context of #DCB? sara.event-thinking.io/2026/03/the-dc… @bwaidelich and I will host a workshop on how DCB can help address coupling at @CoMoCampOrg 2026. A great opportunity to learn how to deriving the right tags starting directly from your business constraints.

On my way to #comocamp and excited to meet some great people. Are you one of them?

#NeosCMS 9.0 is here! @team/114274588065737168" target="_blank" rel="nofollow noopener">neos.social/@team/11427458…

#DDD enthusiasts, if you are using #eventSourcing, you can get rid of #aggregate with Dynamic Consistency Boundaries, aka #DCB! If you have given it a try, let me know :) sara.event-thinking.io/2023/04/kill-a…

@ShawnMcCool @frankdejonge Late response, but I really like the term and adapted it in my little "DCB example" project: #L81-L90" target="_blank" rel="nofollow noopener">github.com/bwaidelich/dcb…

I was talking to @frankdejonge yesterday on stream and now I'm seriously considering dropping the term "aggregate" from my event sourcing vocabulary in favor of "decision model". "Decision model" explains the purpose. "Aggregate" explains the method. Which do you prefer?

@Savlambda @ShawnMcCool And here's some PoC PHP implementation of her example (using some custom event store implementation): github.com/bwaidelich/dcb… I'm in the process of overhauling it and providing some better docs and examples but the core concept hasn't changed and I'm using it in multiple projects

@Savlambda @ShawnMcCool There's also a video recording of Saras talk: youtube.com/live/DhhxKoOpJ… (italian with english subtitles)

I talked to @ShawnMcCool about #EventSourcing and #DynamicCobsistencyBoundary – still need to work on my free english talking skills and on some elevator pitch.. youtu.be/pArQHH-IoD8?si…

#DynamicConsistencyBoundary ¯\_(ツ)_/¯

@MrPunyapal How do you mean? In this particular example, the memory footprint is roughly the same because I store the items in an array internally. But that could be changed at any point without breaking the contract. I also use generators sometimes to encapsulate and stream db returns

@bwaidelich How much impactful it it? 🤔

PHP developers, when did you last use yield keyword? 🤔

@christophrumpel :D

@bwaidelich You are not selling 😅 but thanks

I've been looking into how to best animate code in a video. This is more complex than it sounds due to, for example, code highlighting. This is an ongoing journey; here is what I have found so far:

@christophrumpel ..although maybe not the prettiest one and no support for PHP (yet)

@christophrumpel Maybe code.movie helps?

Just had a great talk with @johanhaleby and @Pkgrimshaw discussing #DynamicConsistencyBoundary ideas. I hope that we can re-establish a regular exchange to push this topic further! /cc @_sara_p_

@brendt_gd Mine is by far:

This might actually be my favourite feature of PHP 8.4, such a small thing, but it'll be so great 😅

@johanhaleby Hey, I love to talk about it (ask my wife *g), I'll send you a PM

@bwaidelich 👋 If I'm not mistaken you've written an ES poc with DCB. I would love to support this in my hobby project, occurrent.org. I would love to send you some questions or have a chat somewhere if you're up for it :)

@gregyoung @VaughnVernon @TotherAlistair In not mentioning them ;)

@bwaidelich @VaughnVernon @TotherAlistair I am not sure how it "ignores ports and adapters"

Is this even more useful? Based on *a lot* of feedback here and on other social platforms, here's an improvement on my earlier diagram. Hints: I used a white background for dark-mode geeks. The Port interfaces overlap with implementations to avoid showing UML realization arrows. All Ports are on the Inside, even though two crowd the Outside—also based on feedback.