Cactus Comments

Cactus Comments – Blog Comments Powered by Your Own Matrix Server

How I integrated Cactus Comments – a decentralized, tracking-free commenting system built on my own Matrix server – into my Hugo blog, including the client build, appservice setup, and Catppuccin styling.

18. April 2026 · 6 min · 1274 words · Sebastian Zehner
Matrix Homeserver

Self-Hosting Your Own Matrix Homeserver with Synapse – Take Back Control of Your Data

In this article, I set up my own Matrix homeserver using Synapse and Docker Compose. Alongside a brief introduction to the decentralized Matrix protocol, I walk through the complete installation with PostgreSQL, Traefik, and Cloudflare Tunnel.

08. April 2026 · 9 min · 1855 words · Sebastian Zehner
Ollama Context Window

Optimizing the Ollama Context Window: The key to a successful integration of OpenCode

The Context Window is the “invisible bottleneck” in many Ollama setups. Here are three approaches to optimize its performance, practical tests using various models, and specific recommendations for successfully integrating OpenCode with LLMs.

10. January 2026 · 6 min · 1221 words · Sebastian Zehner