tty4.dev

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The non-deterministic nature of LLMs can used as an advantage in existing systems.

tl;dr If a load balancer occasionally returns 502 while the backend looks perfectly healthy, check whether the backend’s keep-alive timeout is shorter than the load balancer’s idle timeout.

This post is part of a series.

When developing internal tools, MCP servers and AI tools like Claude Desktop, Claude Code, or GitHub Copilot (= the MCP clients) can form the matching UI that adapts to the user’s needs.

When developing or learning something I usually find interesting links which I’d like to share.

Recently, I read more and more about Git working trees being used for parallel agents for example in Cursor or VSCode.

This post is part of a series.

This post is part of a series.

This post is part of a series.

This post is part of a series.

This aims to give a better structure to read the posts about the RSS digest implementation.

Since my last post about note-taking many things have changed.

This post is part of a series.

This post is part of a series.

In the past I’ve been writing about some approaches I did for creating a static search for this page.

This post is part of a series.

This post is part of a series.

This post is part of a series.

This post is part of a series.

It was in one of my first jobs where I got tasked to serve a customer a file with some interesting data points about users of a system created for him.

Until recently I had two installations on my computer: One SSD contained my Windows installation and the other one Fedora.

Just a year passed since the Model Context Protocol (MCP) has been introduced by Anthropic and despite of the traction it got in 2025, it got already concurrency by Anthropic itself: Agent Skills.

Although I haven’t posted something on here for a pretty long-time I didn’t forget that this page exists.

Building Retrieval-augmented generation (RAG) is hard.

At QCon San Francisco Dave Cheney gave an insightful talk about how GitHub Copilot works under the hood and is able to serve 400 Million completion requests a day.

The company I’m working for is organizing an event which brings people from different teams together and allows them to work on a topic for one week.

During Easter, there was a sale on domains at my hosting provider, and I saw my moment had come and secured a domain I had been eyeing for several weeks.

I was thinking about moving my Home Assistant instance away from my homelab to an own instance, e.g. to a Raspberry Pi.

Messaging in distributed systems is a problem field which has own patterns and aspects.

In my last post I wrote about Retrieval-augmented generation (RAG) and why it’s needed.

This post is part of a series.

This post is part of a series.

There are many free resources which try to explain what LLMs are and how they work internally.

When driving in Germany on the Autobahn and passing a medium-sized or larger city you’ll see a sign which shows a tourist attraction nearby.

I just completed Androids: The Team that Built the Android Operating System by Chet Haase and can fully recommend this book.

There’s a lot of stuff written about Hexagonal Architecture.

With patch files Git provides an easy-to-use way to move code changes between branches.

Recently, I set up new projects in my homelab.

There are quite a lot of tools which try to give the same experience as ChatGPT or claude.ai: A nice UI with model selections etc.

I already wrote twice how to generate recommendations for blog posts with machine learning: Calculate automatically the similarity between my posts Getting a higher confidence in spaCy similarity I’m pretty happy about the results and it works without any…

Recently I got the following error when I was doing a git rebase master: error: Your local changes to the following files would be overwritten by checkout: <Omitted list of files> Please commit your changes or stash them before you switch branches.

The @NoRepositoryBean annotation allows to define an extensible / generic JPA repository in Spring Boot: @NoRepositoryBean public interface BaseAnimalRepository<T> extends JpaRepository<T, Long> From the documentation of the @NoRepositoryBean: This will…

To assert that a specific message is logged in a Spring Boot application, the OutputCaptureExtension can be used.

Few weeks ago my girlfriend took me to a pottery workshop.

Currently, I don’t blog that much.

Recently I was thinking about the Smartphones I had and remembered my first one: The HTC Desire (codename Bravo, sometimes also A8181).

It’s time to get some practice after answering what the Wasm component model is.

In the beginning of this year the WASI preview 2 reached a milestone by being launched.

I’m back from Japan and want to give a small collection of tips for apps, websites and services which I found useful before and during my trip. eSIM First, I really recommend to get an eSIM.