Howard van Rooijen
@hvr.endj.in
Founder @endjin.com Microsoft #MVP for Azure & Developer Technologies. Try to help people and orgs to become the best versions of themselves.
I turned 48 last month. In other news I've just booked in for an eye test on Monday and have ordered a much bigger monitor. This year has been a bit too blurry for my liking.
December 18, 2025 at 6:36 PM
I turned 48 last month. In other news I've just booked in for an eye test on Monday and have ordered a much bigger monitor. This year has been a bit too blurry for my liking.
Reposted by Howard van Rooijen
The first CoreCLR Interpreter benchmarks are out and it’s significantly (magnitudes) slower than Mono. But a good first starting point and should be enough time in the 11.0 timeframe to improve: github.com/dotnet/runti...
Interpreter Performance · Issue #122464 · dotnet/runtime
This issue holds various status information and work items for improving performance on platforms making use of interpreter with CoreCLR. This contains both interpreter performance related work ite...
github.com
December 18, 2025 at 4:14 PM
The first CoreCLR Interpreter benchmarks are out and it’s significantly (magnitudes) slower than Mono. But a good first starting point and should be enough time in the 11.0 timeframe to improve: github.com/dotnet/runti...
It's time for my favourite blog post of the year - the annual performance benchmark of our .NET based AIS (Automatic Identification System) - Marine Vessel Telemetry - parsing library. Every vessel over a certain size has to transmit information (name, location, status, direction etc).
December 10, 2025 at 9:23 AM
It's time for my favourite blog post of the year - the annual performance benchmark of our .NET based AIS (Automatic Identification System) - Marine Vessel Telemetry - parsing library. Every vessel over a certain size has to transmit information (name, location, status, direction etc).
Ian Griffiths (of the Programming C# books) is releasing a series of short videos on all the new features in C# 14... first up... Script Directives...
endjin.com/what-we-thin...
endjin.com/what-we-thin...
C# 14 New Feature: Script Directives | endjin
C# 14 & .NET 10 allow you to write complete programs in a single .cs file using the new Script Directives feature. This talk explores the new feature and how to use it.
endjin.com
November 28, 2025 at 11:23 AM
Ian Griffiths (of the Programming C# books) is releasing a series of short videos on all the new features in C# 14... first up... Script Directives...
endjin.com/what-we-thin...
endjin.com/what-we-thin...
Reposted by Howard van Rooijen
AI has transformed tech interviews into a game of cat and mouse.
November 27, 2025 at 3:35 AM
AI has transformed tech interviews into a game of cat and mouse.
Some thoughts on the UK budget: It seems the UKGOV are happy to class anyone with £5m assets as "wealthy" so why not raise the inheritance tax limit for farms to £5m also? It would remove one of the thorns in their sides...
November 27, 2025 at 7:04 AM
Some thoughts on the UK budget: It seems the UKGOV are happy to class anyone with £5m assets as "wealthy" so why not raise the inheritance tax limit for farms to £5m also? It would remove one of the thorns in their sides...
We've just released a new version of the Interactive Extensions for .NET (Ix.NET). Now that .NET 10.0 offers built-in support for LINQ to IAsyncEnumerable, it's time for Ix.NET's System.Linq.Async to step back.
endjin.com/blog/2025/11...
endjin.com/blog/2025/11...
endjin.com
November 26, 2025 at 7:18 AM
We've just released a new version of the Interactive Extensions for .NET (Ix.NET). Now that .NET 10.0 offers built-in support for LINQ to IAsyncEnumerable, it's time for Ix.NET's System.Linq.Async to step back.
endjin.com/blog/2025/11...
endjin.com/blog/2025/11...
I've been tracking Flatcar for a few years and it's fantastic that it's*finally* supported on AKS. Great article by @pixelrobots.co.uk
Flatcar Container Linux on #AzureKubernetesService: First Look by Richard Hooper pixelrobots.co.uk/2025/11/flat...
Flatcar Container Linux on AKS: First Look - Pixel Robots.
Reading Time: 6 minutesShare:Recently I spotted something new in the AKS CLI preview. Flatcar showed up as a valid OS SKU for Linux node pools. As someone who’s been running AKS clusters for years,...
pixelrobots.co.uk
November 22, 2025 at 7:40 AM
I've been tracking Flatcar for a few years and it's fantastic that it's*finally* supported on AKS. Great article by @pixelrobots.co.uk
Reposted by Howard van Rooijen
Spectre.Console 0.54.0 released! 🎉 spectreconsole.net/blog/posts/2...
Spectre.Console - Spectre.Console 0.54.0 released!
Spectre.Console.Cli has a new home!
spectreconsole.net
November 13, 2025 at 6:41 AM
Spectre.Console 0.54.0 released! 🎉 spectreconsole.net/blog/posts/2...
Reposted by Howard van Rooijen
It's #rejekts2025 day! Lots to learn 💉⚕️🩻🩺
November 8, 2025 at 2:32 PM
It's #rejekts2025 day! Lots to learn 💉⚕️🩻🩺
Some Rx .NET News!
github.com/dotnet/react... has been merged and github.com/dotnet/react... is available.
This PR finally closes:
- github.com/dotnet/react... (5 years old)
- github.com/dotnet/react... (3.5 years old)
You can see the rest of the v7.0 milestones here: github.com/dotnet/react...
github.com/dotnet/react... has been merged and github.com/dotnet/react... is available.
This PR finally closes:
- github.com/dotnet/react... (5 years old)
- github.com/dotnet/react... (3.5 years old)
You can see the rest of the v7.0 milestones here: github.com/dotnet/react...
Rx 7.0 packaging changes by idg10 · Pull Request #2268 · dotnet/reactive
Resolves #1461
Resolves #1745
This moves all of the UI-framework-specific types out of the public API of System.Reactive, and into framework-specific packages:
System.Reactive.Windows.Forms
System...
github.com
November 8, 2025 at 9:36 AM
Some Rx .NET News!
github.com/dotnet/react... has been merged and github.com/dotnet/react... is available.
This PR finally closes:
- github.com/dotnet/react... (5 years old)
- github.com/dotnet/react... (3.5 years old)
You can see the rest of the v7.0 milestones here: github.com/dotnet/react...
github.com/dotnet/react... has been merged and github.com/dotnet/react... is available.
This PR finally closes:
- github.com/dotnet/react... (5 years old)
- github.com/dotnet/react... (3.5 years old)
You can see the rest of the v7.0 milestones here: github.com/dotnet/react...
Just published the first video from Ian Griffiths about the new C#14 features in .NET 10 - first up, Script Directives (AKA dotnet run program.cs)
youtu.be/WinOQSYxda8
#csharp #dotnet #dotnet10
youtu.be/WinOQSYxda8
#csharp #dotnet #dotnet10
C#14 New Feature: Script Directives
YouTube video by endjin
youtu.be
November 5, 2025 at 12:25 PM
Just published the first video from Ian Griffiths about the new C#14 features in .NET 10 - first up, Script Directives (AKA dotnet run program.cs)
youtu.be/WinOQSYxda8
#csharp #dotnet #dotnet10
youtu.be/WinOQSYxda8
#csharp #dotnet #dotnet10
Reposted by Howard van Rooijen
Fake it 'til you make it - generating production quality test data at scale. by @barry_j_a_smart #Data #Analytics endjin.com/what-we-thin...
Fake it 'til you make it - generating production quality test data at scale. | endjin
Explore open source tools & data sources for generating realistic synthetic data, enabling better product design, testing, and secure engineering practices.
endjin.com
October 31, 2025 at 4:20 AM
Fake it 'til you make it - generating production quality test data at scale. by @barry_j_a_smart #Data #Analytics endjin.com/what-we-thin...
I really wish more apps would support left-handed users... I'm forever accidentally liking/interacting with things because I scroll with my left thumb. I'm very grateful that @felix.gripe implemented "sinister mode" on spike.news
spike.news - Simple news aggregator
Aggregating the news from around the web every minute
spike.news
October 29, 2025 at 2:58 PM
I really wish more apps would support left-handed users... I'm forever accidentally liking/interacting with things because I scroll with my left thumb. I'm very grateful that @felix.gripe implemented "sinister mode" on spike.news
Reposted by Howard van Rooijen
Get the newest Power BI Weekly edition - a free newsletter on Power BI, sent to your inbox every Tuesday. powerbiweekly.info?utm_source=b...
Free Power BI Weekly Newsletter.
Distributed every Tuesday. Powered by endjin.
powerbiweekly.info
October 23, 2025 at 2:15 PM
Get the newest Power BI Weekly edition - a free newsletter on Power BI, sent to your inbox every Tuesday. powerbiweekly.info?utm_source=b...
Reposted by Howard van Rooijen
The #Data Product Canvas: Stop Building #Data Products That Fail by Barry Smart #PowerBI endjin.com/blog/2025/10...
The Data Product Canvas: Stop Building Data Products That Fail | endjin
Turn data initiatives into business success stories with the Data Product Canvas. This practical framework helps teams design data products that deliver real value, avoid common pitfalls, and align with...
endjin.com
October 23, 2025 at 4:25 AM
The #Data Product Canvas: Stop Building #Data Products That Fail by Barry Smart #PowerBI endjin.com/blog/2025/10...
Reposted by Howard van Rooijen
AI agents dominated Big Data LDN 2025, but success wasn't about the technology, it was about building foundations first. After tracking five years of evolution, the lesson for CTOs is clear: governance enables innovation at scale.
Barry Smart's write-up & analysis:
endjin.com/blog/2025/10...
Barry Smart's write-up & analysis:
endjin.com/blog/2025/10...
Big Data London 2025 | endjin
AI agents dominated Big Data LDN 2025, but the real story wasn't the technology, it was which organisations could actually deploy it successfully. After five years tracking industry evolution through ...
endjin.com
October 9, 2025 at 8:03 AM
AI agents dominated Big Data LDN 2025, but success wasn't about the technology, it was about building foundations first. After tracking five years of evolution, the lesson for CTOs is clear: governance enables innovation at scale.
Barry Smart's write-up & analysis:
endjin.com/blog/2025/10...
Barry Smart's write-up & analysis:
endjin.com/blog/2025/10...
An excellent write-up and analysis of the recent Big Data LDN event. Barry poses an excellent question "Where was Microsoft?" and says "if you're not in the room, you're not part of the conversation."
endjin.com/blog/2025/10...
endjin.com/blog/2025/10...
Big Data London 2025 | endjin
AI agents dominated Big Data LDN 2025, but the real story wasn't the technology, it was which organisations could actually deploy it successfully. After five years tracking industry evolution through ...
endjin.com
October 9, 2025 at 7:45 AM
An excellent write-up and analysis of the recent Big Data LDN event. Barry poses an excellent question "Where was Microsoft?" and says "if you're not in the room, you're not part of the conversation."
endjin.com/blog/2025/10...
endjin.com/blog/2025/10...
All 3 days of Carmel & Jess' deep dive write up of #FabConEurope 2025 are out:
Day 1:
- Keynote
- Data Factory: What's New and Roadmap
- Power BI Roadmap: Strategy, Vision and Demos
- Unify your Data Estate with OneLake
- What's next for Fabric Data Engineering
endjin.com/blog/2025/09...
Day 1:
- Keynote
- Data Factory: What's New and Roadmap
- Power BI Roadmap: Strategy, Vision and Demos
- Unify your Data Estate with OneLake
- What's next for Fabric Data Engineering
endjin.com/blog/2025/09...
endjin.com
October 8, 2025 at 7:11 AM
All 3 days of Carmel & Jess' deep dive write up of #FabConEurope 2025 are out:
Day 1:
- Keynote
- Data Factory: What's New and Roadmap
- Power BI Roadmap: Strategy, Vision and Demos
- Unify your Data Estate with OneLake
- What's next for Fabric Data Engineering
endjin.com/blog/2025/09...
Day 1:
- Keynote
- Data Factory: What's New and Roadmap
- Power BI Roadmap: Strategy, Vision and Demos
- Unify your Data Estate with OneLake
- What's next for Fabric Data Engineering
endjin.com/blog/2025/09...
What an absolute joke Anthropic! A Max 20x account that lasts 2.5 days light use?
October 4, 2025 at 10:34 AM
What an absolute joke Anthropic! A Max 20x account that lasts 2.5 days light use?
Rx.NET v6.1 Now Available | endjin
Rx.NET 6.1 is now available, adding some useful new features.
endjin.com
October 3, 2025 at 7:12 PM
Carmel & Jess went to #FabCon in Vienna a couple of weeks ago. I never get FOMO because endjin-eers always do great write-ups of the sessions they go to. Here's Carmel's blog about Day 1:
endjin.com/blog/2025/09...
#MicrosoftFabric #PowerBI #OneLake #DataFactory #AI
endjin.com/blog/2025/09...
#MicrosoftFabric #PowerBI #OneLake #DataFactory #AI
FabCon Vienna 2025: Day 1 | endjin
FabCon is a conference dedicated to everything Microsoft Fabric. Day 1 was mostly focused around the hundreds of new feature announcements.
endjin.com
October 1, 2025 at 1:20 PM
Carmel & Jess went to #FabCon in Vienna a couple of weeks ago. I never get FOMO because endjin-eers always do great write-ups of the sessions they go to. Here's Carmel's blog about Day 1:
endjin.com/blog/2025/09...
#MicrosoftFabric #PowerBI #OneLake #DataFactory #AI
endjin.com/blog/2025/09...
#MicrosoftFabric #PowerBI #OneLake #DataFactory #AI
Reposted by Howard van Rooijen
So apparently my client has decided that we should (1) start using Cursor, and (2) show up at the office four days a week.
After more than 6 years there, I’m thinking this might be my cue to eject.
Anyone looking for a coder for a remote gig (or hybrid in Stockholm)?
After more than 6 years there, I’m thinking this might be my cue to eject.
Anyone looking for a coder for a remote gig (or hybrid in Stockholm)?
September 30, 2025 at 8:23 PM
So apparently my client has decided that we should (1) start using Cursor, and (2) show up at the office four days a week.
After more than 6 years there, I’m thinking this might be my cue to eject.
Anyone looking for a coder for a remote gig (or hybrid in Stockholm)?
After more than 6 years there, I’m thinking this might be my cue to eject.
Anyone looking for a coder for a remote gig (or hybrid in Stockholm)?
The 4K remaster of Tron Legacy on Disney+ is stunning. The soundtrack on my surround system is 🔥🔥🔥
September 28, 2025 at 9:17 PM
The 4K remaster of Tron Legacy on Disney+ is stunning. The soundtrack on my surround system is 🔥🔥🔥