[Side A] Building a RAM Disk on Windows without Admin Privileges — Python I/O Acceleration Techniques

From the Author: D-MemFS was featured in Python Weekly Issue #737 (March 19, 2026) under Interesting Projects, Tools and Libraries . Being picked up by one of the most widely-read Python newsletters confirmed that in-memory I/O bottlenecks and memory management are truly universal challenges for developers everywhere. This series is my response to that interest. 🧭 About this Series: The Two Sides of Development To provide a complete picture of this project, I’ve split each update into two perspectives: Side A (Practical / from Qiita): Implementation details, benchmarks, and technical solutions. Side B (Philosophy / from Zenn): The development war stories, AI-collaboration, and design decisions. Introduction When you want to use a RAM disk on Windows, tools like ImDisk Toolkit or OSFMount are usually the first candidates that come to mind. However, they share a common restriction—they require administrative privileges , or a paid license. Often, you can't use them in CI environments or