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Jiří Činčura ↹

@cincura.net
217 followers 143 following 151 posts

About me: www.tabsoverspaces.com/about

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Reposted by Jiří Činčura ↹
Barry Dorrans @blowdart.me · 21/09/2026
FIPS 140-3.11 for workgroups
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Jiří Činčura ↹ @cincura.net · 11/09/2026
Announcing Project Zenith: The ready-to-code Windows experience on developer-class devices blogs.windows.com/windowsdevel...
blogs.windows.com
Announcing Project Zenith: The ready-to-code Windows experience on developer-class devices
Breakthroughs in computing become real through the experiences developers create. Our goal is to have Windows be the best platform for developers. That means pairing the latest in hardware innovation ...
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Reposted by Jiří Činčura ↹
Robert Haken @haken.dev · 08/09/2026
HAVIT se stal OpenAI Select Partnerem Společnost HAVIT, s.r.o., pražské digitální studio pro éru AI zaměřené na vývoj softwaru na míru, implementaci a adopci AI a Microsoft Azure, dnes oznámila, že byla jmenována OpenAI Select Partnerem v rámci OpenAI Partner Network. OpenAI Partner Network je…
knowledge-base.havit.cz
HAVIT se stal OpenAI Select Partnerem
Společnost HAVIT, s.r.o., pražské digitální studio pro éru AI zaměřené na vývoj softwaru na míru, implementaci a adopci AI a Microsoft Azure, dnes oznámila, že byla jmenována OpenAI Select Partnerem v rámci OpenAI Partner Network. OpenAI Partner Network je globální program pro partnery, kteří s OpenAI vytvářejí, prodávají a dodávají AI řešení. Sdružuje partnery s hlubokou oborovou expertízou, delivery kapacitami a vztahy se zákazníky a poskytuje jim zdroje, enablement a podporu, aby pomohli firmám nasadit frontier modely a produkty OpenAI a proměnit je v měřitelný přínos.
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Jiří Činčura ↹ @cincura.net · 06/09/2026
VLANs on #MikroTik are just guesswork and prayer. Especially with wifi interfaces.
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Jiří Činčura ↹ @cincura.net · 28/08/2026
Blogged: WUG Days 2026 Brno a SQL Server Bootcamp 2026 Brno www.tabsoverspaces.com/id/233975
tabsoverspaces.com
WUG Days 2026 Brno a SQL Server Bootcamp 2026 Brno
Následující týden se koná, dneska už tradiční dvojboj konferencí, WUG Days a SQL Server Bootcamp v Brně. A tak jako obvykle, připravil jsem několik přednášek.
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Jiří Činčura ↹ @cincura.net · 09/08/2026
Reading CLR internals the cDAC way: contracts instead of the DAC chrisnas.github.io/posts/2026-0...
chrisnas.github.io
Reading CLR internals the cDAC way: contracts instead of the DAC
Why .NET is replacing the DAC with the cDAC data contracts, how they work locally / over a process / from a dump, and how to map the GitHub .md contracts to C# - with a from-scratch !eeheap as a worki...
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Reposted by Jiří Činčura ↹
Dev Leader @devleader.ca · 11/07/2026
MDD because TDD never even stood a chance. #SoftwareEngineering #Developers #Memes
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Jiří Činčura ↹ @cincura.net · 01/07/2026
Azure SQL Database container microsoft.github.io/azure-sql-da... #azure #cloud #sql #sqlserver #azuresql
microsoft.github.io
Azure SQL Database container
Azure SQL Database, running on your laptop. Build, test, and ship against the real engine. No Azure subscription, no shared instance, no connection-string rewrites from inner loop to production.
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Jiří Činčura ↹ @cincura.net · 30/06/2026
Hosting layer error and exit codes github.com/dotnet/runti... #dotnet
github.com
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Jiří Činčura ↹ @cincura.net · 25/06/2026
It is expected to be 39C here over the weekend. My servers are going to suffer, because I don't have AC in my server room. #homelab
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Jiří Činčura ↹ @cincura.net · 16/06/2026
Blogged: Strongly typed generic object in C# www.tabsoverspaces.com/id/233972 #csharp #dotnet #object #generics #typesafety #fun
tabsoverspaces.com
Strongly typed generic object in C#
Because sometimes you just need bit more type safety.
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Jiří Činčura ↹ @cincura.net · 14/06/2026
Too good to be true: an unexpected profiler trap minidump.net/an-unexpecte...
minidump.net
Too good to be true: an unexpected profiler trap
Sometimes the most convincing performance gains deserve a second look. A reminder that profiling data can be more subtle than it first appears.
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Jiří Činčura ↹ @cincura.net · 03/06/2026
Achievement unlocked: `IReadOnlyList<IReadOnlyList<int?>?>?`
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Jiří Činčura ↹ @cincura.net · 25/05/2026
Agentic Orchestration Coding Craftsmanship Futurist
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Reposted by Jiří Činčura ↹
Jim Perrin @jperrin.bsky.social · 19/05/2026
So @sjvn.bsky.social just dropped a very nice bit about our announcement today. I might be biased since it's what I've spent the last 6 years working on but hey... www.zdnet.com/article/micr...
zdnet.com
Microsoft surprises with its first server Linux distribution: Azure Linux 4.0
You'll be able to run this Linux distro on both Azure and your desktop using Windows Subsystem for Linux. Here's what we know about it so far.
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Jiří Činčura ↹ @cincura.net · 19/05/2026
Blogged: Gopas TechEd 2026 www.tabsoverspaces.com/id/233971
tabsoverspaces.com
Gopas TechEd 2026
Tento týden se koná Gopas TechEd. Letos jsem připravil 3 přednášky.
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Jiří Činčura ↹ @cincura.net · 15/05/2026
Architecting for Concurrency: Wolverine's Approach to Shared Resources bradjolicoeur.com/article/wolv...
bradjolicoeur.com
Architecting for Concurrency: Wolverine's Approach to Shared Resources
Why distributed locks fail under load in async .NET systems, and how Wolverine's optimistic concurrency and partitioned messaging solve it architecturally.
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Jiří Činčura ↹ @cincura.net · 11/05/2026
Blogged: Techorama (BE) 2026 www.tabsoverspaces.com/id/233970 #techorama
tabsoverspaces.com
Techorama (BE) 2026
Wow, time flies. This week Techorama in Antwerp is going to happen. And I’m looking forward to medieval edition. I was lucky and 2 of my sessions were selected.
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Jiří Činčura ↹ @cincura.net · 06/05/2026
What?
GitHub showing 12 PRs in menu, while only 6 are listed.
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Reposted by Jiří Činčura ↹
Scott Blomquist @scott.blomqui.st · 28/04/2026
Good morning Mt. Rainier.
A snowcapped Mt. Rainier peaking out of a high overcast layer against the backdrop of the end of a sunrise.
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Jiří Činčura ↹ @cincura.net · 27/04/2026
Blogged: My public NTP Server, one year later: Hardware upgrades, better RF, and OSNMA www.tabsoverspaces.com/id/233969 #time #ntp #cm4 #raspberrypi #ptp
tabsoverspaces.com
My public NTP Server, one year later: Hardware upgrades, better RF, and OSNMA
It’s been almost a year since I put my NTP server on the public internet. Since then I’ve changed a few things, so I’m due for a write-up.
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Jiří Činčura ↹ @cincura.net · 24/04/2026
Blogged: GitHub Copilot Dev Days 2026 www.tabsoverspaces.com/id/233968 #copilot #ai #csharp #dotnet #claude
tabsoverspaces.com
GitHub Copilot Dev Days 2026
Příští týden ve čtvrtek, 30. dubna, se koná GitHub Copilot Dev Days 2026 v Praze. I já přispěju trochu do mlýna s tématem Jak jsme začali používat Copilot v dotnet/runtime.
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Jiří Činčura ↹ @cincura.net · 16/04/2026
Dema nachystana. Na zitrek jsem ready. #FamousLastWords
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Jiří Činčura ↹ @cincura.net · 15/04/2026
Blogged: Global Azure 2026 www.tabsoverspaces.com/id/233967 #azure #globalazure #cloud
tabsoverspaces.com
Global Azure 2026
Tento týden v pátek, 17. dubna, se koná Global Azure 2026 v Praze. I já přispěju trochu do mlýna s tématem Cloud design patterns for better architecture (even without cloud).
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Jiří Činčura ↹ @cincura.net · 12/04/2026
youtube.com/shorts/1aDSX...
youtube.com
Snow (Hey Oh) Mashup #shorts
YouTube video by Cooper Alan
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Reposted by Jiří Činčura ↹
NE Ohio Regional Sewer District @neorsd.org · 31/03/2026
not ‘shopped. not cropped. not stock. straight from the phone of stormwater inspector Lindsay Schiel snapped yesterday at a basin in Hudson.
vertical image of a still retention basin and sunlit sky. the sky is split starkly down the middle, clear on the left, gray clouds on the right, sun at the center. the cloud line is reflected perfectly on the basin surface below the horizon.

photo by Lindsay Schiel NEORSD
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Jiří Činčura ↹ @cincura.net · 24/03/2026
Blogged: Introducing NtpTick: A lightweight NTP client for .NET www.tabsoverspaces.com/id/233966 #dotnet #csharp #ntp #time #clock #synchronization
tabsoverspaces.com
Introducing NtpTick: A lightweight NTP client for .NET
Over the last couple of years, I’ve spent a lot of time studying, experimenting, and learning about clocks, NTP, PTP, and time synchronization in general. It’s a fascinating area that brings together ...
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Jiří Činčura ↹ @cincura.net · 21/03/2026
Blogged: FbNetExternalEngine 7.0 released www.tabsoverspaces.com/id/233965 #firebird #dotnet #databases #database #psql
tabsoverspaces.com
FbNetExternalEngine 7.0 released
Step forward for FbNetExternalEngine today – version 7.0 is ready, you can go and download it right now.
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Jiří Činčura ↹ @cincura.net · 17/03/2026
Blogged: Adriatics Tech Summit 2026 www.tabsoverspaces.com/id/233964 #speaker #conference #dotnet #ai #vector #databases #ingestion
tabsoverspaces.com
Adriatics Tech Summit 2026
I’m very excited to be speaking at the Adriatics Tech Summit 2026 in about two weeks. It will be my first time speaking there, so I’m both thrilled and a little nervous.
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Jiří Činčura ↹ @cincura.net · 11/03/2026
DnsEndPoint – where have you been? www.tabsoverspaces.com/id/233963 #net #dotnet #csharp #networking
tabsoverspaces.com
DnsEndPoint – where have you been?
I was today years old when I discovered DnsEndPoint. How is it possible that I never came across it in over two decades of working with .NET?
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Jiří Činčura ↹ @cincura.net · 10/03/2026
I'll have a sessions at Warsaw IT Days. warszawskiedniinformatyki.pl Wanna discount? Here it is: WID26SP20.
Banner for "Lessons learned from translating parameterized collections in EF core".Banner for "Working with strings in .NET and SearchValues".
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Jiří Činčura ↹ @cincura.net · 09/03/2026
Ain't no engineering like overengineering.
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Jiří Činčura ↹ @cincura.net · 08/03/2026
I know I'm late to the game, but I finally added OG tags to my blog. #og #blog #website
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Jiří Činčura ↹ @cincura.net · 27/02/2026
Blogged: Using RPKI on MikroTik RouterOS 7 (7.21) www.tabsoverspaces.com/id/233962 #mikrotik #security #bgp #rpki
tabsoverspaces.com
Using RPKI on MikroTik RouterOS 7 (7.21) | tabs ↹ over ␣ ␣ ␣ spaces by Jiří {x2} Činčura
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Jiří Činčura ↹ @cincura.net · 26/02/2026
My Internet provider (CINCURA, AS215777) implements BGP safely! Check out isbgpsafeyet.com to see if your ISP implements BGP in a safe way or if it leaves the Internet vulnerable to malicious route hijacks.
isbgpsafeyet.com
Is BGP safe yet? · Cloudflare
On the Internet, network devices exchange routes via a protocol called BGP (Border Gateway Protocol). Unfortunately, issues with BGP have led to malicious actors being able to hijack and misconfigure ...
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Jiří Činčura ↹ @cincura.net · 25/02/2026
Blogged: Is it faster to index into an array or use switch statement for lookups? www.tabsoverspaces.com/id/233961
tabsoverspaces.com
Is it faster to index into an array or use switch statement for lookups? | tabs ↹ over ␣ ␣ ␣ spaces by Jiří {x2} Činčura
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Jiří Činčura ↹ @cincura.net · 11/02/2026
Memory Integrity Enforcement: A complete vision for memory safety in Apple devices - Apple Security Research security.apple.com/blog/memory-...
security.apple.com
Memory Integrity Enforcement: A complete vision for memory safety in Apple devices - Apple Security Research
Memory Integrity Enforcement (MIE) is the culmination of an unprecedented design and engineering effort spanning half a decade that combines the unique strengths of Apple silicon hardware with our adv...
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Jiří Činčura ↹ @cincura.net · 08/02/2026
Blogged: Entity Framework Core 10 provider for Firebird is ready www.tabsoverspaces.com/id/233960 #efcore #ef #entityframework #entityframeworkcore #firebird
tabsoverspaces.com
Entity Framework Core 10 provider for Firebird is ready | tabs ↹ over ␣ ␣ ␣ spaces by Jiří {x2} Činčura
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Jiří Činčura ↹ @cincura.net · 02/02/2026
Blogged: Dealing with “Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start contai... www.tabsoverspaces.com/id/233959
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Jiří Činčura ↹ @cincura.net · 25/01/2026
Blogged: WUG Days 2026 Praha www.tabsoverspaces.com/id/233958
tabsoverspaces.com
WUG Days 2026 Praha | tabs ↹ over ␣ ␣ ␣ spaces by Jiří {x2} Činčura
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Reposted by Jiří Činčura ↹
Frans Bouma @fransbouma.com · 30/12/2025
Updated my Raw Data Access Benchmarks to .NET 10, EF Core 10, LLBLGen Pro v5.13 and also bumped some other frameworks to the latest versions. Source and latest results: github.com/FransBouma/R...
github.com
GitHub - FransBouma/RawDataAccessBencher: Bench code which tests entity materialization speed of various .NET data access / ORM implementations
Bench code which tests entity materialization speed of various .NET data access / ORM implementations - FransBouma/RawDataAccessBencher
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Jiří Činčura ↹ @cincura.net · 19/12/2025
Dnešní nabíjecí hra na rodné hroudě. Přijedu na Chargee, mělo to dát 50 kW, ale jelo to 24kW, i po chvíli co jsem si nakoupil v Lidlu. Přejel jsem na E.ON Drive. 120 kW, ale asi po 10 minutách nabíječka odmítla nabíjet. Měl jsem čas, tak jsem to řešil s infolinkou.
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Reposted by Jiří Činčura ↹
Dev Leader @devleader.ca · 18/12/2025
If you fix every problem for your team, you're not leading -- you're blocking. Even though it might not seem like it. It’s tempting, especially when you’re experienced. You see the issue. You know the solution. You want to help. But if you jump in every time, here’s what happens:
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Jiří Činčura ↹ @cincura.net · 16/12/2025
About to replace my #Mikrotik wAP ac with wAP ax. The mounting bracket looks the same. But is it really? I guess I'll find out soon. While on a ladder, of course.
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Jiří Činčura ↹ @cincura.net · 06/12/2025
ZWA-2 over PoE? Nice! I want that! www.home-assistant.io/blog/2025/10...
home-assistant.io
Connect ZWA-2 anywhere: Use Z-Wave over Wi-Fi or PoE
Introducing Portable Z-Wave, an experimental firmware that lets you use Z-Wave over the built-in Wi-Fi or even add PoE.
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Jiří Činčura ↹ @cincura.net · 05/12/2025
#Uptrace is my new favorite observability/OTEL tool. uptrace.dev
uptrace.dev
Open Source Observability: Datadog Alternative
Scalable and affordable OpenTelemetry-based observability platform that helps you monitor, understand, and optimize complex distributed systems.
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Jiří Činčura ↹ @cincura.net · 03/12/2025
Profiling hard. #perf
List of functions in hot path.
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Jiří Činčura ↹ @cincura.net · 26/11/2025
Tak já jedu do Žiliny, abych si tu dal "plzeň". To je fail. #codecon #za www.tabsoverspaces.com/id/233956
Pivo "plzeň".
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Jiří Činčura ↹ @cincura.net · 25/11/2025
Made it to Köln. Looking forward to DDC. www.tabsoverspaces.com/id/233955
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Reposted by Jiří Činčura ↹
Allen Holub @allenholub.bsky.social · 22/11/2025
Let’s talk about “Move fast and break things.” First of all, Facebook itself changed its motto to “Move fast with stable infrastructure” in 2014. So much for breaking things, at least if you’re a soulless corporate behemoth. 1/12
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