Matthias Petermann
Matthias Petermann
Matthias Petermann holds a degree in computer science (Dipl.-Inform. (FH)) and has worked in IT for more than 25 years. His first vocational training was as an electrician. Today, that background comes full circle in embedded systems, local automation, and smart home projects.
His technical curiosity began in the early 1990s with a Commodore 64 and his first self-built PCs. After studying computer science at the HTW Dresden, he gained experience in IT infrastructure, application and system management, semiconductor manufacturing, CAD/CAM, pharma, and financial services, as well as in open source projects.
Since 2012, Matthias has provided independent IT consulting, at times full-time. Alongside his current employment, he continues to support selected projects. His focus is on IT architecture, messaging, automation, and embedded systems. He values systems that remain understandable, work in day-to-day operations, and can be operated well over the long term.
Messaging
The End of Gateways: Message-Level Zero Trust with Apache Pulsar
Zero Trust does not stop at the HTTP endpoint. In event-driven architectures, trust must be enforced at message level. This article shows how Apache Pulsar can act as a gatekeeper in front of legacy systems....
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minipulsar – current status of the Pulsar-compatible broker prototype for edge scenarios
This article describes the current status of minipulsar: a Pulsar-compatible broker prototype with a focus on Protocol fidelity, portability and clear state models....
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Controlling load instead of bending systems: Rate limiting with Apache Pulsar
This workshop article uses a realistic ERP scenario to show how Apache Pulsar can be used to control external load into internal systems - without changes to the ERP itself....
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A Smart Home That Feels Like Home
Having to get up again after a shower because the fan is still humming: no disaster, but one of those small annoyances that become noticeable over time.
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NodeMCU from Scratch: Building and Flashing the Lua Firmware Yourself
NodeMCU is more than a prebuilt image. This article shows how to build the firmware from source, flash it, and test it on real hardware as a foundation for further experiments....
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Linux-based smart meter gateway with Raspberry Pi and Prometheus
With manageable hardware and free software, a fully-fledged smart meter gateway can be built – transparent, local and without cloud dependency. The article shows how a Raspberry Pi, two IR reading heads and a Python script Provide measurement data directly as Prometheus metrics - from the IEC port to the Grafana dashboard....
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