https://schristoph.online/tags/aiarchitecture/Personal homepage and blog of Stefan ChristophHugo -- gohugo.ioen-usStefan Christoph. All rights reserved.Tue, 17 Mar 2026 00:00:00 +0000https://schristoph.online/blog/cli-vs-mcp-the-wrong-debate/?utm=rss-feedTue, 17 Mar 2026 00:00:00 +0000https://schristoph.online/blog/cli-vs-mcp-the-wrong-debate/<h2 id="the-zombie-processes-and-the-50gb-cache">The Zombie Processes and the 50GB Cache</h2> <p>A few weeks ago, I noticed my MacBook was sluggish. I found orphaned MCP server processes that had failed to shut down cleanly, a problem Didier Durand describes vividly in his analysis [2], where users report finding over 100 zombie Node.js processes after a single session. I killed mine, freed some RAM, and went back to work.</p> <p>Then last week, Brooke Jamieson, a fellow AWS Developer Advocate, published a post about running <code>uv cache prune</code> and freeing 75GB of disk space [9]. The culprit? Every <code>uvx</code> invocation from MCP servers (Kiro, Cursor, Claude Code all use them under the hood) silently caches packages, and the cache never cleans itself up. I ran the same command and got back 50GB. Fifty gigabytes of invisible MCP debt, sitting on my drive.</p>