Rob Janssen

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Rolling your own crypto: Everything you need to build AES from scratch (and then never use it for anything of consequence)

Rolling your own crypto: Everything you need to build AES from scratch (and then never use it for anything of consequence) You often hear the phrase "Don't roll your own crypto". I think this sentence is missing an important qualifier: "...and then use it for anything of consequence".

.NET 6 Minimal API Full Build

In this step by step video we perform a full step by step build of a .NET 6 minimal API. We also contrast and compare it with a MVC API to further understand the differences and similarities between them. Level: Beginner ?? Links ?? ?? GitHub Repository:

New UUID Formats

Workgroup: dispatch Internet-Draft: draft-peabody-dispatch-new-uuid-format-03 Updates: 4122 (if approved) Published: 31 March 2022 Intended Status: Standards Track Expires: 2 October 2022 Authors: BGP. Peabody K.

Generating sortable Guids using NewId

In this post I discuss the pros-and-cons of using database-generated integer vs client-generated Guids, and introduce NewId as a way of mitigating some of the downsides of Guids.

Story about graceful termination with modern .NET

Abstract Pods represent processes running on nodes in the cluster, each pod could be terminated anytime, for instance during a new version rollout or the possibility of evicting pods from one node into another node in the cluster, so it’s good practice for your app to be able to gracefully termina

The setup "trick" that .NET libraries use and you should too

Check out my new "Integration testing in ASP .NET Core" course and use code INTESTING1 for 20% off (first 300): Become a Patreon and get source code access: Hello everybody I'm Nick a

On awaiting a task with a timeout in C#

Say you have an awaitable object, and you want to await it, but with a timeout. How would you build that? What you can do is use a when_any-like function in combination with a timeout coroutine. For C# this would be something like

IBM's asshole test

Some years back I applied to join IBM's grad scheme, there was a peculiar stage to the process I've not seen elsewhere. It was during the onsite day, where a batch of 20 or so applicants were put through various tests in an IBM office.


Cronos is a .NET library for parsing Cron expressions and calculating next occurrences. It was designed with time zones in mind, and intuitively handles Daylight saving time (also known as Summer time) transitions as in *nix Cron.


All you have to do to send messages to another process is know its address, which will never change. This project separates a modern communication API from the routing algorithm that powers it.

This Read-It-Later-list is just that, bookmarks of stuff I intend to read or have read. I do not necessarily agree with opinions or statements in the bookmarked articles.

This list is compiled from my Pocket list.