A focused selection of essays and guides: sovereign digital infrastructure, AI in production, product liability for developers, philosophy of technology, and my conference talks. Most topics feed directly into my consulting and workshop offers.
A hands-on exploration of Matrix room discovery: querying public room directories via the Client-Server API, what works anonymously and what doesn't, and a curated list of rooms worth joining for DevOps and self-hosting folks.
The BSI published C5:2026 in March — from June 2027 the catalogue becomes the recommended baseline for cloud audit periods. What NIST CSF 2.0, CSA CCM, and the new catalogue mean for vendors serving German enterprises and the public sector.
One idea runs from Pythagoras' ratios, through Plato's Timaeus and Kant's wallpapers, to Noether's theorem and the Lie groups of the Standard Model — and now sits inside every neural network as equivariance. A short philosophy of symmetry as invariance under transformation, and why machines finally made the a priori empirical.
The two services almost every application needs, tuned instead of defaulted: production-tuned PostgreSQL (shared buffers, WAL compression), Redis with AOF + RDB persistence, and a scheduled backup job
Dify — visual LLM app builder with RAG, agents, and prompt workflows — backed by PostgreSQL, Redis, Weaviate, an SSRF proxy and a code sandbox. The deployment pattern I use for LLM applications that n
A complete Kubernetes lab-to-production pattern: k3s in Docker with the embedded etcd datastore, Rancher for management, MetalLB for Layer-2 LoadBalancer IPs, Longhorn replicated storage, and Traefik