This site collects technical notes by Yifei Zheng on systems engineering, data platforms, cloud infrastructure, production dashboards, hardware projects, and applied AI.
The older posts are mostly project journals and setup notes. The newer posts focus on production systems, deployment tradeoffs, operational ownership, and operating AI workloads in real environments.
Agentic AI
- Judgement in the Era of Agentic AI
- The Marginal Economics of Agentic AI
- Autonomy is Overrated: Human Staffing vs. Agentic AI
- Day-1 vs. Day-2 in the Era of Agentic AI
Systems and infrastructure
- Year in Review (2025): Systems Engineering
- Strix Halo Matrix Cores with llama.cpp
- Year-to-Date: Data, Systems, and Infrastructure
- Apache Web Server on GCP
- #MahjulahGCP (Season 2)
Dashboards and analytics
- WhatsApp Chat Analysis
- WhatsApp Chat Dashboard
- Dashboard Deployment on Web Server
- Dashboard Deployment on AWS
- Shiny Dashboard Development
Raspberry Pi and home lab
- Jupyter Server on Pi
- Pi Cluster (Hardware)
- Pi Cluster (SSH and Static IP)
- Pi Cluster (Master Node Hadoop and Spark)
- Pi Cluster (Worker Node Hadoop and Spark)