19 Nov 2025
1 mins
Network, NTS, Time
As I’m running my time.cincura.net timeserver I have some monitoring in place. But one thing was missing: checking the certificate for NTS. Although the renewal is semi-automated, having an additional layer of verification provides peace of mind. The challenge is that most monitoring tools do not support NTS, so I decided to create my own tool – which you can now use as well.
7 Nov 2025
1 mins
Presentations & Speaking
Už za dvacet dní, přesně, se bude konat CODECON #Žilina. Nikdy jsem na této konferenci nebyl, ale Žilina je rozhodně město, které mám rád. A když vidím, na jakých místech se akce koná, nemůžu se dočkat. Moje session je How I put .NET into Firebird database engine. Ano, název je v angličtině (protože jsem hlupák a nedošlo mi, že CfP můžu vyplnit v češtině), ale jinak vám vše samozřejmě řeknu v češtině.
7 Nov 2025
1 mins
Presentations & Speaking
In about two weeks a .NET Developer Conference is going to happen in Köln. I’ll have one session Autoincrement (identity) is not the only option for primary keys.
10 Oct 2025
2 mins
Presentations & Speaking
We’re close to that time of year – time of .NET DeveloperDays in Warsaw. I’m really excited to be there, so let’s talk about what you can listen to from me.
28 Aug 2025
2 mins
Presentations & Speaking
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.
4 Aug 2025
2 mins
Application Insights, Azure, OpenTelemetry, SigNoz, Smart home
I have a small .NET application that manages some specific parts of my Software Defined House aka Smart home. Recently, I decided to transition from Application Insights and I found an unexpected behavior when using pure Open Telemetry exporter.
23 Jul 2025
1 mins
Homelab, Network, NTP, Time
Ever since I started building my homelab and started playing with networking I wanted to give something back. Something that’s a valuable service. And although I’m self-hosting a bunch of my websites and providing data from my weather stations publicly, it was not it. Until I stumbled upon timekeeping and time servers.
19 May 2025
1 mins
Presentations & Speaking
Next week Techorama in Antwerp is going to happen. And I’m looking forward to all-star sports edition. I was lucky and 2 of my sessions were selected.
16 May 2025
1 mins
.NET, C#
I was writing some code in EF Core’s codebase and saw different way of writing condition on nullable bool.
16 May 2025
1 mins
Presentations & Speaking
Příští týden se bude konat Gopas TechEd. Letos jsem připravil 3 přednášky.
6 Feb 2025
1 mins
.NET, C#, Databases in general, Entity Framework Core, Firebird, LINQ, SQL
I’m excited to announce the release of Entity Framework Core 9 provider for Firebird.
5 Nov 2024
2 mins
Azure, Cloud, Network
Purely out of curiosity I decided to test latencies to a few Azure datacenters around me. Specifically, Germany West Central (Frankfurt), Poland Central (Warsaw) and West Europe (Amsterdam). I wanted to test Azure DC in Austria as well, but it is not yet available.
6 Oct 2024
1 mins
Presentations & Speaking
In couple of days Techorama in Utrecht is going to happen. This year’s theme is funfair. This I was lucky and 2 of my sessions were selected.
13 Sep 2024
1 mins
Presentations & Speaking
We are couple of weeks from .NET DeveloperDays 2024. Really excited to be there. My main “show” there is going to be Mastering Entity Framework Core workshop.
2 Sep 2024
1 mins
Presentations & Speaking
Tento týden se koná, dneska už tradiční dvojboj konferencí, WUG Days 2024 a SQL Server Bootcamp 2024 v Brně. A tak jako obvykle, připravil jsem několik přednášek.
24 Jun 2024
1 mins
Presentations & Speaking
I’ll be speaking this Thursday about Tips and tricks for VS debugger in Vienna for DotNetDevs.at. You can register here.
3 Jun 2024
1 mins
Presentations & Speaking
One of my favourite conferences – .NET Developer Days – that happens in Warsaw in fall is now having also a Berlin edition. And I’m a big fan of Berliner Fernsehturm. Looks like a perfect combination (well, perfect combination would be to have the conference in Fernsehturm 😉). Anyway, I’ll have two sessions there and I hope to see you there.
23 May 2024
1 mins
.NET, C#, Databases in general, Entity Framework Core, Firebird, LINQ, SQL
I’m excited to announce the release of Entity Framework Core 8 provider for Firebird.
13 May 2024
4 mins
.NET, C#
I was working on a codebase the other day and it used heavily the pattern matching features of C#. And as I was writing string.IsNullOrEmpty it got me thinking whether I could switch from this very specific method to using (maybe) a more general pattern matching approach. And also, how that compares in performance.
8 May 2024
1 mins
Kernel, Memory, Windows
00000000000000000000000000000000000000000000000000000000000000000000000000000000
30 Apr 2024
1 mins
Presentations & Speaking
2.5.2024 od 17:00 na WUGu v Olomouci si popovídáme o async a await. Přednáška Async a await pěkně od podlahy má v mém reportoáru už asi 30 podob. Pokaždé když ji dělám řeknu něco jinak, někdo se zeptá na něco zajímavého atp. a ani tady to nebude jinak. Tak se přijďte podívat a udělat se mnou další podobu.
18 Apr 2024
1 mins
Presentations & Speaking
Zítra, 19. dubna, se koná globalní akce Global Azure 2024. I já přispěju trochu do mlýna s tématem Azure Spot instances as your secret weapon.
26 Mar 2024
1 mins
Presentations & Speaking
16.4.2024 od 17:30 na WUGu ve Zlíně si dáme dvojpřednášku. Laďte jak profík ve Visual Studiu a Práce se stringy v .NET 8 a SearchValues.
22 Mar 2024
1 mins
Presentations & Speaking
I’ll be speaking at this years Warsaw IT Days 2023. One sessions What’s new in C# 12 will be in-person in Warsaw, while other Dynamic PGO in .NET 8 and why you need to know about it is VoD.
1 Mar 2024
1 mins
Presentations & Speaking
V pondělí se uskuteční WUG Dev Day 2024. Připravil jsem dvě přednášky.
15 Feb 2024
2 mins
.NET, C#
My mind was wandering, as usual when it is not 100% occupied, and I remembered that the Select LINQ function has an overload that gives you the index into the enumeration and it uses an int. So, I thought what’s going to happen if I have longer enumeration and it goes over the range of the int?
14 Feb 2024
1 mins
.NET, Firebird
Step forward for FbNetExternalEngine today – version 6.0 is ready, you can go and download it right now.
10 Nov 2023
1 mins
.NET, C#, Databases in general, Entity Framework, Entity Framework Core, Firebird, LINQ, SQL, Visual Studio
New major version 10.0.0.0 of ADO.NET provider for Firebird is ready for download.
9 Nov 2023
1 mins
Presentations & Speaking
Trhák letošního roku – .NET 8 – 14.11. v premiéře ve Zlíně s celebritami. Řečeno normálně, společné sledování keynote .NET Conf 2023 v rámci WUGu ve Zlíně, následná diskuze s experty a také neformální hospoda. Lepší úterní večer asi těžko vymyslíte (nebo nejste opravdový geek 😄). Tak doufám, že se tam uvidíme.
19 Oct 2023
2 mins
Presentations & Speaking
Less than a week until .NET Developer Days 2023. Can’t wait to be there. This year, I’ll be doing workshop and session.