Blog on Jeremy Theocharis

I almost agree with all of the LLM critics, yet I still use LLMs a lot.

A Go function in our application kept getting cancelled in production.

A friend of mine is a veterinarian doing his PhD in something with milk.

tokens go brrrr.

We have been in all types of industries all around the world.

Beyond compressed air and electricity, data should be the third resource every factory runs on.

This guide is for LLMs and humans.

I was young and needed the money.

If you live in Germany, you have been treated like livestock by Deutsche Bahn (DB).

In modern industrial IoT, data downsampling is essential to tame the flood of sensor readings without losing important information.

Manufacturing “AI” is, frankly, a dumpster fire.

Most MQTT explanations suck - they are either confusing or too technical or skip the big-picture context entirely.

Revised December 2025: Simplified for readability.

No, you don’t have to use AWS or Azure.

This isn’t one of my usual engineering write-ups, nor is it a marketing piece.

Note: This blog article is based on the presentation given by Jeremy Theocharis at Cloudland 2024 and was written together with Denis Gontcharov Connecting a USB stick to the “cloud” seems to be a stupid thing to do.

It couldn’t get much worse.

You are skeptical.

TL;DR aka “Executive Summary” can be found at the end of the article “Never change a running system.”

Open-source databases have recently been stealing the spotlight in numerous industries, including process sectors such as oil and gas, chemicals, pharmaceuticals, and utilities.

This blog post was first presented at the Building IoT 2023 conference in Munich, Germany, under the title “Tools & Techniques for Scalable Data Processing in Industrial IoT.”

Operating Systems (OS) play an important role in the world of Industrial IoT, serving as the foundation for various applications and processes.

Unified Namespace, also known as event-driven architecture, is a system in which all data is published, regardless of whether there is a consumer for it.

(Podcast episode available on the original article on learn.umh.app.)

(Podcast episode available on the original article on learn.umh.app.)

Most people know Node-RED from the areas of smart home or programming introductions (those workshops where you connect things with microcontrollers).

For a more broad perspective on the topic, check out our article Historians vs Open-Source databases!