Vaughn Vernon
@vaughnvernon.bsky.social
Software Architect and Modeler | #DDDesign | Systems Transformation | Simplicity | Writes Code | Actor Model | @kalele_io @kalele_domo | em dashes—my own
I have published #DomoActors for TypeScript, an #ActorModel toolkit for the JavaScript platform with fault-tolerant, message-driven concurrency.
$ npm -install domo-actors
See below for access. 1/3
$ npm -install domo-actors
See below for access. 1/3
November 14, 2025 at 12:31 AM
I have published #DomoActors for TypeScript, an #ActorModel toolkit for the JavaScript platform with fault-tolerant, message-driven concurrency.
$ npm -install domo-actors
See below for access. 1/3
$ npm -install domo-actors
See below for access. 1/3
I decided to change the SchemaMinder open source license to the Reciprocal Public License 1.5 (RPL 1.5).
See links to repository and license text.
github.com/VaughnVernon...
opensource.org/license/rpl-...
See links to repository and license text.
github.com/VaughnVernon...
opensource.org/license/rpl-...
November 7, 2025 at 3:04 PM
I decided to change the SchemaMinder open source license to the Reciprocal Public License 1.5 (RPL 1.5).
See links to repository and license text.
github.com/VaughnVernon...
opensource.org/license/rpl-...
See links to repository and license text.
github.com/VaughnVernon...
opensource.org/license/rpl-...
If there's anything that has become clear to me while using #GenAI, it's this:
AI speed is abundant. Craft is scarce.
Those inexperienced in software development while embracing GenAI may never understand how software is best constructed. 1/3
AI speed is abundant. Craft is scarce.
Those inexperienced in software development while embracing GenAI may never understand how software is best constructed. 1/3
November 4, 2025 at 2:17 AM
If there's anything that has become clear to me while using #GenAI, it's this:
AI speed is abundant. Craft is scarce.
Those inexperienced in software development while embracing GenAI may never understand how software is best constructed. 1/3
AI speed is abundant. Craft is scarce.
Those inexperienced in software development while embracing GenAI may never understand how software is best constructed. 1/3
Register for my upcoming "Implementing Domain-Driven Design Workshop" December 8-11 and learn the latest on #DDDesign strategic and tactical modeling with #AI #LLM assistance on #Serverless. Yes, we're going there together.
It's not just time. It's deeper insights faster.
kalele.io/iddd-workshop
It's not just time. It's deeper insights faster.
kalele.io/iddd-workshop
October 30, 2025 at 3:44 PM
Register for my upcoming "Implementing Domain-Driven Design Workshop" December 8-11 and learn the latest on #DDDesign strategic and tactical modeling with #AI #LLM assistance on #Serverless. Yes, we're going there together.
It's not just time. It's deeper insights faster.
kalele.io/iddd-workshop
It's not just time. It's deeper insights faster.
kalele.io/iddd-workshop
I have improved the set up of the #SchemaMinder project that demonstrates the results of using @anthropic.com #ClaudeCode and @cloudflare.social serverless.
See: docs/GETTING_STARTED.md
Use: npm run setup
That gets you started quickly.
See: docs/GETTING_STARTED.md
Use: npm run setup
That gets you started quickly.
October 22, 2025 at 6:52 PM
I have improved the set up of the #SchemaMinder project that demonstrates the results of using @anthropic.com #ClaudeCode and @cloudflare.social serverless.
See: docs/GETTING_STARTED.md
Use: npm run setup
That gets you started quickly.
See: docs/GETTING_STARTED.md
Use: npm run setup
That gets you started quickly.
After a month away on other work, I finally got back to my product and have it in fairly good shape. It's generated by Claude Code under my architecture and design guidance. Here's a screenshot of the UI. I am not going to polish it much more, so I hope to open the repo sometime during the weekend.
October 18, 2025 at 5:50 AM
After a month away on other work, I finally got back to my product and have it in fairly good shape. It's generated by Claude Code under my architecture and design guidance. Here's a screenshot of the UI. I am not going to polish it much more, so I hope to open the repo sometime during the weekend.
There is no single part of Scrum that is bad. It's the inseparableness of and strict adherence to all the parts of Scrum that is bad. By definition, you can't separate any parts of Scrum, as in use a subset of Scrum linked with common sense, and still call it Scrum. 1/6
Figure: Not complex enough.
Figure: Not complex enough.
October 13, 2025 at 7:07 PM
There is no single part of Scrum that is bad. It's the inseparableness of and strict adherence to all the parts of Scrum that is bad. By definition, you can't separate any parts of Scrum, as in use a subset of Scrum linked with common sense, and still call it Scrum. 1/6
Figure: Not complex enough.
Figure: Not complex enough.
Our book "Strategic Monoliths and Microservices" doesn't categorically (as an absolute) recommend modular monoliths. The key is in the subtitle: "Driving Innovation Using Purposeful Architecture." 1/4
October 8, 2025 at 6:58 PM
Our book "Strategic Monoliths and Microservices" doesn't categorically (as an absolute) recommend modular monoliths. The key is in the subtitle: "Driving Innovation Using Purposeful Architecture." 1/4
I have felt before like I'm in a fish bowl. Now I'll actually be in a fish bowl. 🐟 🐟 🐟 🐟
Question: Which Berlin bier 🍺 pairs best with fish food?
Question: Which Berlin bier 🍺 pairs best with fish food?
October 1, 2025 at 3:04 PM
I have felt before like I'm in a fish bowl. Now I'll actually be in a fish bowl. 🐟 🐟 🐟 🐟
Question: Which Berlin bier 🍺 pairs best with fish food?
Question: Which Berlin bier 🍺 pairs best with fish food?
Last week, I received a box full of the new printed book "Architecture for Flow" by @suksr.bsky.social
It's available on InformIT(.com) now and from Amazon with 1-2 day delay, which is likely because it's selling like hotcakes:
#8 in Software Design & Engineering
⭐️⭐️⭐️⭐️⭐️
Order yours today!
It's available on InformIT(.com) now and from Amazon with 1-2 day delay, which is likely because it's selling like hotcakes:
#8 in Software Design & Engineering
⭐️⭐️⭐️⭐️⭐️
Order yours today!
September 26, 2025 at 3:04 PM
Last week, I received a box full of the new printed book "Architecture for Flow" by @suksr.bsky.social
It's available on InformIT(.com) now and from Amazon with 1-2 day delay, which is likely because it's selling like hotcakes:
#8 in Software Design & Engineering
⭐️⭐️⭐️⭐️⭐️
Order yours today!
It's available on InformIT(.com) now and from Amazon with 1-2 day delay, which is likely because it's selling like hotcakes:
#8 in Software Design & Engineering
⭐️⭐️⭐️⭐️⭐️
Order yours today!
My next public workshop is scheduled for early December 2025. Don't miss it!
Upcoming Public Workshop:
"Implementing Domain-Driven Design Workshop"
December 8-11, 2025
14:00 CET (Berlin)
08:00 EST (NYC)
2/2
kalele.io/iddd-workshop
Upcoming Public Workshop:
"Implementing Domain-Driven Design Workshop"
December 8-11, 2025
14:00 CET (Berlin)
08:00 EST (NYC)
2/2
kalele.io/iddd-workshop
September 25, 2025 at 4:19 AM
My next public workshop is scheduled for early December 2025. Don't miss it!
Upcoming Public Workshop:
"Implementing Domain-Driven Design Workshop"
December 8-11, 2025
14:00 CET (Berlin)
08:00 EST (NYC)
2/2
kalele.io/iddd-workshop
Upcoming Public Workshop:
"Implementing Domain-Driven Design Workshop"
December 8-11, 2025
14:00 CET (Berlin)
08:00 EST (NYC)
2/2
kalele.io/iddd-workshop
A few days remain to register: Implementing Domain-Driven Design Workshop: DDD strategic and tactical modeling, architecture, collaboration tools.
Vital for legacy moderation and innovative core initiatives.
4 half days 22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Details below ⬇️
Vital for legacy moderation and innovative core initiatives.
4 half days 22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Details below ⬇️
September 15, 2025 at 4:43 AM
A few days remain to register: Implementing Domain-Driven Design Workshop: DDD strategic and tactical modeling, architecture, collaboration tools.
Vital for legacy moderation and innovative core initiatives.
4 half days 22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Details below ⬇️
Vital for legacy moderation and innovative core initiatives.
4 half days 22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Details below ⬇️
Join my Implementing Domain-Driven Design Workshop: DDD strategic and tactical modeling with practical lightweight collaboration tools.
Vital for legacy moderation and innovative core initiatives.
4 half days
22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Group discounts
Details ⬇️
Vital for legacy moderation and innovative core initiatives.
4 half days
22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Group discounts
Details ⬇️
September 8, 2025 at 1:48 PM
Join my Implementing Domain-Driven Design Workshop: DDD strategic and tactical modeling with practical lightweight collaboration tools.
Vital for legacy moderation and innovative core initiatives.
4 half days
22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Group discounts
Details ⬇️
Vital for legacy moderation and innovative core initiatives.
4 half days
22-25 September
14:00 CEST (Berlin)
08:00 US EDT (New York)
Group discounts
Details ⬇️
Welcome to the desert.
August 26, 2025 at 1:04 AM
Welcome to the desert.
That sounds like a production.
August 21, 2025 at 8:25 PM
That sounds like a production.
August 20, 2025 at 5:17 AM
I'm going to take a wild guess here: NuBank teams are very good communicators, and they check their egos at the door.
August 16, 2025 at 2:54 PM
I'm going to take a wild guess here: NuBank teams are very good communicators, and they check their egos at the door.
People freak out at this and ask, "How is anyone alive in Phoenix?"
We had the same temperature in June a few years ago. It's all relative—a different spectrum.
Blood thins.
It feels good. (Wind isn't fun, though.)
58° is freezing cold.
It's far worse with humidity in Dubai.
We had the same temperature in June a few years ago. It's all relative—a different spectrum.
Blood thins.
It feels good. (Wind isn't fun, though.)
58° is freezing cold.
It's far worse with humidity in Dubai.
August 13, 2025 at 5:17 AM
People freak out at this and ask, "How is anyone alive in Phoenix?"
We had the same temperature in June a few years ago. It's all relative—a different spectrum.
Blood thins.
It feels good. (Wind isn't fun, though.)
58° is freezing cold.
It's far worse with humidity in Dubai.
We had the same temperature in June a few years ago. It's all relative—a different spectrum.
Blood thins.
It feels good. (Wind isn't fun, though.)
58° is freezing cold.
It's far worse with humidity in Dubai.
Thanks to John D'Emic, who stumbled onto this 1987 article I wrote on OS/2 advanced APIs, I can share it with you.
I was using 286DOS from alpha build 740 or so, which became OS/2. Microsoft Press commissioned me and my co-author. He wanted me because I knew Unix internals.
1/5
I was using 286DOS from alpha build 740 or so, which became OS/2. Microsoft Press commissioned me and my co-author. He wanted me because I knew Unix internals.
1/5
August 11, 2025 at 5:28 PM
Thanks to John D'Emic, who stumbled onto this 1987 article I wrote on OS/2 advanced APIs, I can share it with you.
I was using 286DOS from alpha build 740 or so, which became OS/2. Microsoft Press commissioned me and my co-author. He wanted me because I knew Unix internals.
1/5
I was using 286DOS from alpha build 740 or so, which became OS/2. Microsoft Press commissioned me and my co-author. He wanted me because I knew Unix internals.
1/5
"Celebrate! Celebrate! Dance to the music!" 🎶
Every report that I've seen on the reality of GPT-5 is polar opposite of the hype vibe. #Fail
Every report that I've seen on the reality of GPT-5 is polar opposite of the hype vibe. #Fail
August 9, 2025 at 3:43 AM
"Celebrate! Celebrate! Dance to the music!" 🎶
Every report that I've seen on the reality of GPT-5 is polar opposite of the hype vibe. #Fail
Every report that I've seen on the reality of GPT-5 is polar opposite of the hype vibe. #Fail
The GPT-5 reports just get better and better each day.
What started as euphoric praise soon turned to utter disappointment from the same people.
What started as euphoric praise soon turned to utter disappointment from the same people.
August 8, 2025 at 8:53 PM
The GPT-5 reports just get better and better each day.
What started as euphoric praise soon turned to utter disappointment from the same people.
What started as euphoric praise soon turned to utter disappointment from the same people.
I'll just leave this right here.
August 8, 2025 at 3:13 PM
I'll just leave this right here.
Jevons paradox, also known as the Jevons effect, describes the phenomenon where increased efficiency in the use of a resource actually leads to a greater overall consumption of that resource rather than a decrease. This counterintuitive concept...
1/2
1/2
August 4, 2025 at 2:48 AM
Jevons paradox, also known as the Jevons effect, describes the phenomenon where increased efficiency in the use of a resource actually leads to a greater overall consumption of that resource rather than a decrease. This counterintuitive concept...
1/2
1/2