Jannik Wempe

Every post on this blog is also served as plain markdown – same URL, one Accept header away.

A growing share of your potential readers ask ChatGPT instead of Google.

2025 was the year I took the leap from employee to self-employed.

When I first encountered snapshot tests, I was skeptical.

What happens to existing customers if you change or delete a pricing plan of your Shopify app?

Get more reliable Plausible analytics data by proxying requests through AWS CloudFront.

Discover how to implement the open/closed principle using Node.js AsyncLocalStorage, promoting maintainable and scalable code in your projects.

In January 2025, I renewed my AWS Developer Associate certification, which I first obtained in December 2020.

It's story time.

You work on different projects, maybe in different teams, or just on older and newer personal projects.

I intended to write about my personal life and my professional live in this post.

💁 I will update this post if I have notes for new episodes.

A lot of us are coding for an employer and privately or as a freelancer for multiple companies.

💁 I will update this post if I have notes for new episodes.

I was hesitant to purchase ChatGPT Pro.

You have messed up production.

Nowadays trunk-based development as a branching model is preferred compared to something like Git Flow.

EDIT (2022-10-31): Just one day after publishing this post, there is a huge announcement: Remix joins Shopify and Hydrogen v2 will be leveraging Remix.

It is quite common to need a secret value of some kind in a Lambda function.

CDK Aspects Introduction CDK Aspects are a powerful tool provided by the AWS Cloud Development Kit (CDK).

Things are confusing when you are just starting to use AWS.

React's Context API is a popular choice for global state (my definition: state that is shared amongst components).

Often we write React components that get bigger and bigger and at some point, we extract parts of it into separate components.

I just recently tweeted my favorite tech stack for 2022 (inspired by Jon Meyers tweet).

"Cookie-based vs. token-based" conflates three independent decisions: where state lives, where credentials are stored, and how they're transmitted.

Container queries are a neat upcoming CSS feature enabling us developers to build more reusable components.

Running arbitrary code on a schedule is a very common use case.

This post is part two of my series about state machines.

If you are working as a developer (software engineer, coding wizard, or whatever you want to call it), chances are high you came across the term state machine.

In my last post about Domain-Driven Design (DDD) I explained why DDD is (still) relevant and what it actually is.

The concept of Domain-Driven Design (DDD) was introduced by Eric Evans.

I recently set up an AWS organization to follow the best practice to use a multi-account environment (read "Why should I set up a multi-account AWS environment?").

Same Discussions Over and Over Again This post debunks some of the arguments against using tailwindcss.

Why I did my research I am not writing this article because the subject just came to me.

Just to get this out of the way in the beginning: This is not meant to be bashing other frameworks like React, Vue, or Angular.

By using class decorators, we have access to the constructor and also its prototype (for explanation about constructors and prototype see this MDN explanation of inheritance).

⁉️ What are decorators?