Udi Dahan
@udidahan.com
Posts about Software Development, Design, and Architecture.
Founder and CEO of NServiceBus. He/Him.
https://udidahan.com/
https://twitter.com/UdiDahan
https://hachyderm.io/@udidahan
Founder and CEO of NServiceBus. He/Him.
https://udidahan.com/
https://twitter.com/UdiDahan
https://hachyderm.io/@udidahan
"Obvious" if you've been around a while, but still needs broader awareness:
> New tech typically has more known unknowns, and many more unknown unknowns
> software that’s been around longer tends to need less care and feeding than software that just came out
#UseWhatWorks
boringtechnology.club
> New tech typically has more known unknowns, and many more unknown unknowns
> software that’s been around longer tends to need less care and feeding than software that just came out
#UseWhatWorks
boringtechnology.club
Choose Boring Technology
How to be old, for young people.
boringtechnology.club
December 14, 2025 at 9:48 AM
"Obvious" if you've been around a while, but still needs broader awareness:
> New tech typically has more known unknowns, and many more unknown unknowns
> software that’s been around longer tends to need less care and feeding than software that just came out
#UseWhatWorks
boringtechnology.club
> New tech typically has more known unknowns, and many more unknown unknowns
> software that’s been around longer tends to need less care and feeding than software that just came out
#UseWhatWorks
boringtechnology.club
Reposted by Udi Dahan
There’s no single “best” way to version APIs. Each strategy exists because it solves a different problem. The key is matching the strategy to your context.
Api Versioning - A deep dive
irina.codes
December 1, 2025 at 3:04 AM
There’s no single “best” way to version APIs. Each strategy exists because it solves a different problem. The key is matching the strategy to your context.
Reposted by Udi Dahan
How do you design a UI when the back-end system consists of dozens (or more) of microservices? In this video, Mauro Servienti shows how to use the concept of UI Composition to build a page without losing autonomy between services
Designing a UI for Microservices
🔗Transcription 00:01 Mauro Servienti So welcome again. And welcome to Designing a UI for Microservices. As said, my name is Mauro Servienti. So I'm a remote worker. So I'm fully working remotely for…
particular.net
November 27, 2025 at 3:04 AM
How do you design a UI when the back-end system consists of dozens (or more) of microservices? In this video, Mauro Servienti shows how to use the concept of UI Composition to build a page without losing autonomy between services
Reposted by Udi Dahan
If implicit ranking can silence a room of senior engineers during a training simulation, imagine what it is doing to your actual architecture design sessions. If we don't actively facilitate group dynamics and level the playing field, we lose the vital perspectives required to solve complex problems
November 25, 2025 at 7:34 AM
If implicit ranking can silence a room of senior engineers during a training simulation, imagine what it is doing to your actual architecture design sessions. If we don't actively facilitate group dynamics and level the playing field, we lose the vital perspectives required to solve complex problems
This thread demonstrates how people may *think* they are representing the "problem space" when they are still subconsciously stuck in the "solution space".
My recommendation is to delay naming things, using placeholders like colors in the interim - uncomfortable at first, yes, but helpful.
Try it.
My recommendation is to delay naming things, using placeholders like colors in the interim - uncomfortable at first, yes, but helpful.
Try it.
We stop designing for the feature and start designing for the business problem. Coming up with new ideas and models to solve the problem.
The takeaway: Name your bounded context towards the problems in the problem space, not the solutions in the solution space.
The takeaway: Name your bounded context towards the problems in the problem space, not the solutions in the solution space.
November 18, 2025 at 5:11 PM
This thread demonstrates how people may *think* they are representing the "problem space" when they are still subconsciously stuck in the "solution space".
My recommendation is to delay naming things, using placeholders like colors in the interim - uncomfortable at first, yes, but helpful.
Try it.
My recommendation is to delay naming things, using placeholders like colors in the interim - uncomfortable at first, yes, but helpful.
Try it.
> There is only one way to have good open source projects... pay the maintainers. And there is only one way to pay the maintainers: pay the companies that fund them.
#Open-Source #Funding #UseWhatWorks
www.linkedin.com/posts/wmorga...
#Open-Source #Funding #UseWhatWorks
www.linkedin.com/posts/wmorga...
Linkerd Forever | William Morgan | 18 comments
The highest-impact announcement at Kubecon Atlanta last week had nothing to do with AI. It was the announcement that ingress-nginx was being deprecated. In one fell swoop, ten thousand K8s SREs learne...
www.linkedin.com
November 17, 2025 at 10:06 PM
> There is only one way to have good open source projects... pay the maintainers. And there is only one way to pay the maintainers: pay the companies that fund them.
#Open-Source #Funding #UseWhatWorks
www.linkedin.com/posts/wmorga...
#Open-Source #Funding #UseWhatWorks
www.linkedin.com/posts/wmorga...
Yup, many people underestimate the "gravity" of data when doing legacy modernization. That and data quality issues.
But the real challenge comes when tackling the core of the legacy, especially the data, that has many dependencies and is hard to untangle.
And picking too many quick wins can increase overall complexity that makes untangling the core even harder.
2/4
And picking too many quick wins can increase overall complexity that makes untangling the core even harder.
2/4
November 15, 2025 at 9:36 AM
Yup, many people underestimate the "gravity" of data when doing legacy modernization. That and data quality issues.
Reposted by Udi Dahan
With more and more open source projects switching to some sort of commercial licensing model with discounts for small business and community projects, the question keeps coming up: is a 100% discount the same as "free"?
So I made a video about it. What do you think?
www.youtube.com/watch?v=CpI8...
So I made a video about it. What do you think?
www.youtube.com/watch?v=CpI8...
Is a 100% Discount the Same as “Free”?
YouTube video by Dylan Beattie
www.youtube.com
November 13, 2025 at 3:41 PM
With more and more open source projects switching to some sort of commercial licensing model with discounts for small business and community projects, the question keeps coming up: is a 100% discount the same as "free"?
So I made a video about it. What do you think?
www.youtube.com/watch?v=CpI8...
So I made a video about it. What do you think?
www.youtube.com/watch?v=CpI8...
Reposted by Udi Dahan
.NET 10 is out! Before you ask, you can already use .NET 10 in your #NServiceBus endpoints. We've run tests with the previews along the way to ensure you won't run into any issues when you change your target framework.
Announcing .NET 10 - .NET Blog
Announcing the release of .NET 10, the most productive, modern, secure, intelligent, and performant release of .NET yet. With updates across ASP.NET Core, C# 14, .NET MAUI, Aspire, and so much more.
devblogs.microsoft.com
November 13, 2025 at 1:11 PM
.NET 10 is out! Before you ask, you can already use .NET 10 in your #NServiceBus endpoints. We've run tests with the previews along the way to ensure you won't run into any issues when you change your target framework.
Reposted by Udi Dahan
💻 Build cross-language integrations with ease! Watch the demo of a .NET producer and Python consumer using RabbitMQ transport with NServiceBus.
➡️ https://youtube.com/live/YWHY09R46m4
#RabbitMQ #Integration #NServiceBus #Microservices
➡️ https://youtube.com/live/YWHY09R46m4
#RabbitMQ #Integration #NServiceBus #Microservices
November 13, 2025 at 1:30 PM
💻 Build cross-language integrations with ease! Watch the demo of a .NET producer and Python consumer using RabbitMQ transport with NServiceBus.
➡️ https://youtube.com/live/YWHY09R46m4
#RabbitMQ #Integration #NServiceBus #Microservices
➡️ https://youtube.com/live/YWHY09R46m4
#RabbitMQ #Integration #NServiceBus #Microservices
Reposted by Udi Dahan
Today at 1530 Eastern Time, I'll be talking about Clean Architecture with ASP.NET Core 10. Check it out, I have some new stuff to share.
dotnetconf.com
#dotnet
dotnetconf.com
#dotnet
.NET Conf 2025
Join the .NET Conf 2025 free virtual event November 11-13 2025 to learn about the newest developments across the .NET platform, open source, and dev tools. Mark your calendar!
dotnetconf.com
November 13, 2025 at 2:59 PM
Today at 1530 Eastern Time, I'll be talking about Clean Architecture with ASP.NET Core 10. Check it out, I have some new stuff to share.
dotnetconf.com
#dotnet
dotnetconf.com
#dotnet
Reposted by Udi Dahan
This talk is a must-watch for people in the Event-Driven space. I saw @noctovis.bsky.social giving it live at this year's DDDEU, and I truly believe that she nailed the versioning topic 👇🙂
www.youtube.com/watch?v=6TCb...
www.youtube.com/watch?v=6TCb...
Change Is Inevitable: Versioning Event-Driven Systems — Laila Bougria
YouTube video by JetBrains
www.youtube.com
November 7, 2025 at 7:39 AM
This talk is a must-watch for people in the Event-Driven space. I saw @noctovis.bsky.social giving it live at this year's DDDEU, and I truly believe that she nailed the versioning topic 👇🙂
www.youtube.com/watch?v=6TCb...
www.youtube.com/watch?v=6TCb...
Reposted by Udi Dahan
Companies don’t realize their developers often make decisions without leadership involved (to build their own infrastructure because it’s fun) that then burden the company with supporting such systems indefinitely. At the expense of a simpler more maintainable app.
November 7, 2025 at 12:01 PM
Companies don’t realize their developers often make decisions without leadership involved (to build their own infrastructure because it’s fun) that then burden the company with supporting such systems indefinitely. At the expense of a simpler more maintainable app.
"Rants and Raves" from @wildermuth.com
> I think this is true whether it is an open source project, or a commercial product. It has felt like developers can get focused on “How hard could it be?”.
> I think this is true whether it is an open source project, or a commercial product. It has felt like developers can get focused on “How hard could it be?”.
Every developer has faced the “buy vs. build” dilemma. Truth is, reinventing the wheel can cost way more than you think—both in dollars and lost focus. Adopt existing solutions where possible and spend your energy where it matters #UseWhatWorks
Build or Adopt: Stop Building Your Own Plumbing
Once upon a time, I worked with Chris Sells and the software arm of DevelopMentor (trip down memory lane, huh). We built a developer tool and it was my first experience working on a product where developers were our primary customer. It left me with a bad taste in my mouth. Let's talk about it.
blog.wildermuth.com
November 7, 2025 at 11:45 AM
"Rants and Raves" from @wildermuth.com
> I think this is true whether it is an open source project, or a commercial product. It has felt like developers can get focused on “How hard could it be?”.
> I think this is true whether it is an open source project, or a commercial product. It has felt like developers can get focused on “How hard could it be?”.
NSB now completely *free* for orgs under $1M !
PLUS significant discounts as you grow to $5M !!
particular.net/blog/launchi...
PLUS significant discounts as you grow to $5M !!
particular.net/blog/launchi...
Our new Small Business Program
Here at Particular, we’ve been closely following recent developments in the .NET ecosystem, as our good friends Jimmy Bogard and Chris Patterson have started exploring commercialization options to…
particular.net
October 30, 2025 at 2:21 PM
NSB now completely *free* for orgs under $1M !
PLUS significant discounts as you grow to $5M !!
particular.net/blog/launchi...
PLUS significant discounts as you grow to $5M !!
particular.net/blog/launchi...
Reposted by Udi Dahan
🎉 Please join us in congratulating Irina Dominte (Scurtu) @irina.codes on being elected to the .NET Foundation Board of Directors! We look forward to your leadership and impact in the .NET community. 💫 #dotnetfoundation
October 27, 2025 at 2:16 PM
🎉 Please join us in congratulating Irina Dominte (Scurtu) @irina.codes on being elected to the .NET Foundation Board of Directors! We look forward to your leadership and impact in the .NET community. 💫 #dotnetfoundation
Reposted by Udi Dahan
Old but seems still relevant udidahan.com/2010/08/31/r.... Crazy how quickly everything changes in software :P
Race Conditions Don’t Exist
udidahan.com
October 22, 2025 at 10:31 AM
Old but seems still relevant udidahan.com/2010/08/31/r.... Crazy how quickly everything changes in software :P
Reposted by Udi Dahan
New in NServiceBus! Now you can use #CloudflareR2 to store large message bodies in #AmazonSQS systems, which may be more cost effective for your system.
AWS Enhancements
Check out the latest enhancements to NServiceBus support for AWS. All of these updates aim to give you more control, fewer surprises, and a smoother experience when building distributed message-based…
particular.net
October 22, 2025 at 3:04 AM
New in NServiceBus! Now you can use #CloudflareR2 to store large message bodies in #AmazonSQS systems, which may be more cost effective for your system.
Reposted by Udi Dahan
A lot of really cool AWS .NET enhancements for NServiceBus. I especially appreciate the support for our Lambda Annotations framework.
particular.net/blog/aws-enh...
particular.net/blog/aws-enh...
AWS Enhancements
Check out the latest enhancements to NServiceBus support for AWS. All of these updates aim to give you more control, fewer surprises, and a smoother experience when building distributed message-based…
particular.net
October 15, 2025 at 9:28 PM
A lot of really cool AWS .NET enhancements for NServiceBus. I especially appreciate the support for our Lambda Annotations framework.
particular.net/blog/aws-enh...
particular.net/blog/aws-enh...
Reposted by Udi Dahan
New on the blog! We released a bunch of enhancements to our AWS-related components, including improvements to the #SQS transport, #DynamoDB persistence, and #Lambda hosting. Check out all the details here.
AWS Enhancements
Check out the latest enhancements to NServiceBus support for AWS. All of these updates aim to give you more control, fewer surprises, and a smoother experience when building distributed message-based…
particular.net
October 14, 2025 at 11:00 AM
Reposted by Udi Dahan
We can fall into a trap, believing things happen synchronously in a predefined order. They don't–at least not in scalable systems, and certainly not at Starbucks. "What Starbucks can teach you about (software) scalability" on our blog:
What Starbucks can teach us about software scalability
In 2004, Gregor Hohpe published his brilliant post “Starbucks Does Not Use Two-Phase Commit.” When I read it, my time working at Starbucks during my college years suddenly became relevant. Over the…
particular.net
October 6, 2025 at 3:04 AM
We can fall into a trap, believing things happen synchronously in a predefined order. They don't–at least not in scalable systems, and certainly not at Starbucks. "What Starbucks can teach you about (software) scalability" on our blog:
Reposted by Udi Dahan
When you're trying to set culture, you need to prioritize high-trust environments and the delivery of feedback. You cannot let yourself be "casually cruel in the name of being honest" even just a little bit or trust and culture will degrade. - @rstephens.me @ #monktoberfest
October 3, 2025 at 3:53 PM
When you're trying to set culture, you need to prioritize high-trust environments and the delivery of feedback. You cannot let yourself be "casually cruel in the name of being honest" even just a little bit or trust and culture will degrade. - @rstephens.me @ #monktoberfest
Reposted by Udi Dahan
Schemas are a great way to make versioning event-driven systems easier, and @ApacheAvro has the best schema evolution capabilities out there. And, you can use Avro with @NServiceBus too! Check out the samples:
https://docs.particular.net/shape-the-future/avro
#avro #schemaevolution #eda #serdes
https://docs.particular.net/shape-the-future/avro
#avro #schemaevolution #eda #serdes
NServiceBus and Apache Avro • NServiceBus
Using NServiceBus and Apache Avro.
docs.particular.net
September 30, 2025 at 7:33 PM
Schemas are a great way to make versioning event-driven systems easier, and @ApacheAvro has the best schema evolution capabilities out there. And, you can use Avro with @NServiceBus too! Check out the samples:
https://docs.particular.net/shape-the-future/avro
#avro #schemaevolution #eda #serdes
https://docs.particular.net/shape-the-future/avro
#avro #schemaevolution #eda #serdes
Reposted by Udi Dahan
And I draw on Mary Parker Follett’s work; it’s from ~100 years ago, but not only deserves a place in the formative history of the system design (and leadership) field, but in the discourse that helps shape our understanding and approaches today.
![page from material linked upthread, with quotes:
The "Law of the Situation"
"Our job [..] how to devise methods by which we can best discover the order integral to a particular situation."
DYNAMIC
ADMINISTRATION
- Mary Parker Follett
"understand the situation, must see it as a whole, must see the interrelation of all the parts [..] must do more than this. He [sic] must see the evolving situation, the developing situation.
His wisdom, his judgment, is used, not on a situation that is stationary, but on one that is changing all the time."
— Mary Parker Follett, 'The Giving of Orders'
"That's always our problem, not how to get control of people, but how all together we can get control of a situation."
— Mary Parker Follett](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:x6y4qbknc3mrsytkcs426i2q/bafkreihhtknid52lhoc562viy5lklxe4m4lzgb2k6bf5oktiqe6zoelngy@jpeg)
September 26, 2025 at 4:34 PM
And I draw on Mary Parker Follett’s work; it’s from ~100 years ago, but not only deserves a place in the formative history of the system design (and leadership) field, but in the discourse that helps shape our understanding and approaches today.
Reposted by Udi Dahan
In this video, @mauroservienti analyzes the most common errors in building a (micro)services-based architecture. How do we avoid the hype and design systems with longevity as the primary goal?
Microservices architecture: is it the right choice to design long-living systems?
🔗Transcription 00:01 Mauro Servienti Good day, everyone. And welcome to this webinar, this part of Codemotion. Codemotion is the multichannel platform that helps developer in their professional…
particular.net
September 25, 2025 at 3:04 AM
In this video, @mauroservienti analyzes the most common errors in building a (micro)services-based architecture. How do we avoid the hype and design systems with longevity as the primary goal?