On speaker life…
Last week, I did a tweet while at the Paris Charles de Gaulle airport, working on blog posts (part of my job) and drinking bad coffee. Read more »
Recent Posts
Building a scheduled task in ASP.NET Core/Standard 2.0
In this post, we’ll look at writing a simple system for scheduling tasks in ASP.NET Core 2.0. That’s quite a big claim, so I want to add a disclaimer: this system is mainly meant to populate data in our application’s cache in the background, although it can probably be used for other things as well. It builds on the... Read more »
Making string validation faster by not using a regular expression. A story.
A while back, we were performance profiling an application and noticed a big performance bottleneck while mapping objects using AutoMapper. Mapping is of course somewhat expensive, but the numbers we were seeing were way higher than expected: mapping was ridiculously slow! And “just mapping” was not a good explanati... Read more »
Extending .NET CLI with custom tools - dotnet init initializes your NuGet package
A few weeks back, .NET Core 1.1 was released (and a boatload of related tools such as Visual Studio 2017. For .NET Core projects, a big breaking change was introduced: the project format is no longer project.json but good old .csproj. That’s a little bit of a lie: the .csproj is actually an entirely new, simplified ... Read more »
Using dotPeek to figure out why IIS crashed
Here’s a story on how I once used dotPeek to provide debugger symbols and (decompiled) source code for a crashed application for which we had nothing but the application assemblies available. Namespaces have been altered to protect the innocent. Read more »
Application Insights telemetry processors
Two weeks ago I had a wonderful experience speaking at a small conference in Finland. The talk was titled What is going on - Application diagnostics on Azure (slides) and focused on the importance of semantic logging and how Azure Application Insights (AppInsights) can help make sense of that data and correlate it w... Read more »
Exploring .NET managed heap with ClrMD
Since my posts on making code allocate less memory and memory allocation for strings were quite well received, I decided to add another post to the series: Exploring .NET managed heap with ClrMD. In this post, we’ll explore what is inside .NET’s managed heap (you know, the thing where we alocate our objects), how it... Read more »
Exploring memory allocation and strings
A while back, I wrote about making code allocate less memory (go read it now if you haven’t). In that post, we saw how the Garbage Collector works and how it decides to keep objects around in memory or reclaim them. There’s one specific type we never touched on in that post: strings. Why would we? They look like val... Read more »
Making .NET code less allocatey - Allocations and the Garbage Collector
The .NET Garbage Collector (GC) is quite cool. In combination with the runtime’s virtual memory, it helps providing our applications with virtually unlimited memory, by reclaiming memory that is no longer in use and making it available to our code again. By doing so, it also takes away the burden of having to alloca... Read more »
Hotel California
At the start of 2015, I checked out from JetBrains to join Microsoft. Today, after almost two years in the NuGet team, it’s time for change. Microsoft and NuGet have been a fun ride, and I got to complete my personal mission… I remember Paul Stack trolling me (“Hey Maarten, is NuGet down?”) on more than one occasion... Read more »