Andrew Lock "Sock"
@andrewlock.bsky.social
Microsoft MVP and blogger, focused on ASP.NET Core. Author of ASP.NET Core in Action (https://mng.bz/5mRz) Blog: https://andrewlock.net Mastadon: @andrewlock@hachyderm.io Twitter: @andrewlocknet
Just published a new issue of .NET R&D Digest! Thx to @rasbt.bsky.social, @maartenballiauw.be, @andrewlock.bsky.social, @kevingosse.net, @meziantou.net, @simonwillison.net & other authors for their g8 content! olegkarasik.wordpress.com/2026/08/04/n... #dotnet
.NET R&D Digest (July, 2026)
This issue includes bits of AI, Security, MS SQL, Performance, C#, HTTP and of course .NET and .NET Internals.
olegkarasik.wordpress.com
Understanding the Fetch Metadata HTTP headers: Sec-Fetch-Site and friends by @andrewlock.bsky.social andrewlock.net/understandin... #aspnetcore
Blogged: Automatic CSRF protection based on Fetch Metadata headers - Exploring the .NET 11 preview andrewlock.net/exploring-th... In this post I describe the new Cross-Site Request Forgery protection added to ASP.NET Core that uses Fetch Metadata headers instead of tokens #aspnetcore #security
Automatic CSRF protection based on Fetch Metadata headers: Exploring the .NET 11 preview - Part 6
In this post I describe the new Cross-Site Request Forgery protection added to ASP.NET Core that uses Fetch Metadata HTTP headers instead of antiforgery tokens
andrewlock.net
Blogged: Understanding the Fetch Metadata HTTP headers: Sec-Fetch-Site and friends andrewlock.net/understandin... In this post I describe the Fetch Metadata HTTP headers like Sec-Fetch-Site and Sec-Fetch-Mode which give information to a server about the context of a request #Security #aspnetcore
Understanding the Fetch Metadata HTTP headers: Sec-Fetch-Site and friends
In this post I describe the Fetch Metadata HTTP headers like Sec-Fetch-Site and Sec-Fetch-Mode which give information to a server about the context of a request
andrewlock.net
Blogged: Improvements to reading Process outputs - Exploring the .NET 11 preview - Part 5 andrewlock.net/exploring-th... In this post I show some of the improvements to the Process API in .NET 11 for running processes and reading their outputs without risk of deadlock #dotnet
I published part 10 of my "Writing a .NET Garbage Collector in C#" series: minidump.net/writing-a-ne... This time, I implemented support for finalization, which reveals some intricacies of the .NET runtime.
Writing a .NET Garbage Collector in C# - Part 10: Finalizers
Using NativeAOT to write a .NET GC in C#. In this part, we add support for finalization.
minidump.net
New issue of .NET R&D Digest is here! Thx to @lemire.bsky.social, @maartenballiauw.be, @chrisnas.bsky.social, @meziantou.net, @andrewlock.bsky.social & other authors for their g8 content! olegkarasik.wordpress.com/2026/07/02/n... #dotnet
.NET R&D Digest (June, 2026)
This issue includes bits of AI, software development, C++, C#, diagnostics, architecture and of course .NET and .NET Internals.
olegkarasik.wordpress.com
And with collection expressions / spread operators it works very nicely:
IMHO: don't use IEnumerable<TheoryData<...>>. Just return TheoryData<...> directly. It makes the code much less verbose. Thanks @andrewlock.bsky.social! andrewlock.net/creating-str...
Blogged: Closed class hierarchies - Exploring the .NET 11 preview - Part 4 andrewlock.net/exploring-th... In this post I describe what a closed closed hierarchy is, how to create one, and discuss why you might want one #dotnet #csharp
Closed class hierarchies: Exploring the .NET 11 preview - Part 4
In this post I describe what a close closed hierarchy is, how to create one, and discuss why you might want to
andrewlock.net
Let's dig into the new cDAC way to access .NET runtime internals :^) chrisnas.github.io/posts/2026-0... Happy reading!
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...
chrisnas.github.io
Blogged: Exploring the .NET 11 preview - Part 3 - Avoiding ToString() allocations with StringBuilder.MoveChunks andrewlock.net/exploring-th... In this post I take a look at the new MoveChunks() API, explore how it works, what it's for, and how the new API provides opportunities for public APIs
Avoiding ToString() allocations with StringBuilder.MoveChunks: Exploring the .NET 11 preview - Part 3
in this post I take a short look at the new MoveChunks API, explore how it works, what it's for, and how the new API provides opportunities for public APIs
andrewlock.net
Blogged: Software development and AI damienbod.com/2026/06/15/s... #ai #software #code #copilot
Software development and AI
This is a bit of rambling from me and what I believe is a good setup for developing software together with AI tools. I believe the AI tools are good, which will help good developers produce better …
damienbod.com
One more issue of .NET R&D Digest is here! Thanks to @martinfowler.com, @kentbeck.com, @andrewlock.bsky.social, @b0rk.jvns.ca, and other great authors for the amazing content! olegkarasik.wordpress.com/2026/06/05/n... #dotnet
.NET R&D Digest (May, 2026)
This issue includes bits of AI (too much AI), C#, software development, architecture, Windows, security, NTFS and of course .NET and .NET Internals.
olegkarasik.wordpress.com
Blogged: .NET finally gets union types🎉 - Exploring the .NET 11 preview - Part 2 andrewlock.net/exploring-th... In this post I discuss the support for union types released in .NET 11, how they're implemented, the choices made, and how to create your own union types #dotnet
.NET finally gets union types🎉: Exploring the .NET 11 preview - Part 2
In this post I discuss the support for union types released in .NET 11, how they're implemented, the choices made, and how to create your own
andrewlock.net
Blogged: Aspire Azure SQL deployment bug damienbod.com/2026/05/18/a... #aspire #azure #dotnet #aspnetcore #sql
Aspire Azure SQL deployment bug
This week, I was updating my Aspire applications after the latest release and I ran into a deployment bug for my test deployments. I could no longer deploy the database to Azure SQL. I got the foll…
damienbod.com
Blogged: Running background tasks in Blazor with Web Workers - Exploring the .NET 11 preview - Part 1 andrewlock.net/exploring-th... In this post I discuss the new Web Worker template available in .NET 11 for running CPU intensive tasks without blocking the UI #dotnet #blazor
Running background tasks in Blazor with Web Workers: Exploring the .NET 11 preview - Part 1
In this post I discuss the new Web Worker template available in .NET 11 for running CPU intensive tasks without blocking the UI
andrewlock.net
New issue of .NET R&D Digest is here! Thanks to @lemire.bsky.social, @andrewlock.bsky.social, @martinfowler.com, @meziantou.net, @steplyakov.bsky.social and other authors for their g8 content! olegkarasik.wordpress.com/2026/05/04/n... #dotnet
.NET R&D Digest (April, 2026)
This issue includes bits of computer science, AI (unfortunately a lot of AI), academic papers, software development, architecture, performance, scheduling, C#, C++, .NET and .NET Internals.
olegkarasik.wordpress.com
Up until now, I've always used PowerPoint for my talks: WYSIWYG, can get something decent just by dragging a few elements around. However it quickly becomes a nightmare when dealing with animations or complex layouts.
attention git users there are no excuses left for wip wip wip in your repo histories
Andrew Lock "Sock"@andrewlock.bsky.social · 3mo agoBlogged: New features in Git 2.54: easier rebasing, hooks, and statistics andrewlock.net/new-features... In this post I show some of the new features in Git 2.54 including simple rebases with git history, config-based hooks, and stats with git repo structure #git
Blogged: New features in Git 2.54: easier rebasing, hooks, and statistics andrewlock.net/new-features... In this post I show some of the new features in Git 2.54 including simple rebases with git history, config-based hooks, and stats with git repo structure #git
New features in Git 2.54: easier rebasing, hooks, and statistics
In this post I show some of the new features in Git 2.54 including simple rebases with git history, config-based hooks, and stats with git repo structure
andrewlock.net
Blogged: Removing byte[] allocations in .NET Framework using ReadOnlySpan<T> andrewlock.net/removingbyte... In this post I describe how to remove static byte[] allocations, even on .NET Framework, by using Span<T> look at the associated IL, and discuss the potential risks #dotnet
Removing byte[] allocations in .NET Framework using ReadOnlySpan<T>
In this post I describe how to remove static byte[] allocations, even on .NET Framework, by using Span<T>, look at the associated IL, and discuss the risks
andrewlock.net
Blogged: Running AI agents with customized templates using docker sandbox andrewlock.net/running-ai-a... In this post I describe how to create custom templates for Docker Sandboxes, so that your sandboxes start with additional tools immediately available (like .NET) #docker #dotnet
Running AI agents with customized templates using docker sandbox
In this post I describe how to create custom templates for Docker Sandboxes, so that your sandboxes start with additional tools immediately available
andrewlock.net
Blogged: Running AI agents safely in a microVM using docker sandbox andrewlock.net/running-ai-a... In this post I show how to run AI coding agents safely while still using YOLO/dangerous mode using docker sandboxes and the sbx tool #ai #docker #sandbox #claude
Running AI agents safely in a microVM using docker sandbox
In this post I show how to run AI coding agents safely while still using YOLO/dangerous mode using docker sandboxes and the sbx tool
andrewlock.net
New issue of .NET R&D Digest is here! Thx to @simonwillison.net, @birgitta410.bsky.social, @kief.com, @lemire.bsky.social, @kevingosse.net, @andrewlock.bsky.social, @meziantou.net, @stevesanderson.bsky.social & other authors for their g8 content! #dotnet olegkarasik.wordpress.com/2026/04/03/n...
.NET R&D Digest (March, 2026)
This issue includes bits (or I would rather say bytes) of AI, bits of software development, operating systems, web, diagnostics, performance, C++, C#, and of course .NET and .NET Internals.
olegkarasik.wordpress.com
Blogged: Configuring contextual options with Microsoft.Extensions.Options.Contextual andrewlock.net/configuring-... In this post I take a brief look at the Microsoft.Extensions.Options.Contextual package to understand what it's for, how to use it, and discuss whether to use it or not #dotnet
Configuring contextual options with Microsoft.Extensions.Options.Contextual
In this post I take a brief look at the Microsoft.Extensions.Options.Contextual package to understand what it's for, how to use it, and whether to use it or not
andrewlock.net
I can hardly believe that (finally!) there is a great file explorer alternative for those of us who have to stick with windows -- File Pilot is absolutely sleek and marvelous 😍 🔗 filepilot.tech ht @andrewlock.bsky.social (andrewlock.net/windows-expl...)
Ah good, another virtual MVP Summit and because Microsoft Teams is terrible, I can't watch any of it. Classic 🙄
Announcing Polecat: Event Sourcing with SQL Server jeremydmiller.com/2026/03/22/a... I'll happily take any RTs please and thank you! #polecat #critterstack #sqlserver
Announcing Polecat: Event Sourcing with SQL Server
Polecat is now completely supported by JasperFx Software and automatically part of any existing and future support agreements through our existing plans. Polecat was released as 1.0 this past week …
jeremydmiller.com
