Writing, readings and notes.https://nicholas-velten.xyz/https://nicholas-velten.xyz/posts/jdbc-migration/https://nicholas-velten.xyz/posts/jdbc-migration/How a single change in a shared library replaces thousands of lines of legacy code across an entire platform — and the bugs you find along the way.Wed, 06 May 2026 00:00:00 GMThttps://nicholas-velten.xyz/posts/pii-exposure-audit/https://nicholas-velten.xyz/posts/pii-exposure-audit/What starts as a single observation — a password stored in plaintext — unfolds into nine distinct attack surfaces across seven services. This is what that audit looked like and how the fix was designed around a Java 8 constraint.Wed, 06 May 2026 00:00:00 GMThttps://nicholas-velten.xyz/posts/mcp-gateway/https://nicholas-velten.xyz/posts/mcp-gateway/MCP became the standard protocol for connecting AI agents to tools. The protocol has no built-in auth layer. Here's what I built to address it, and what the project has become.Sun, 29 Mar 2026 00:00:00 GMThttps://nicholas-velten.xyz/posts/claude-code-second-brain/https://nicholas-velten.xyz/posts/claude-code-second-brain/An analysis of how I've been using Claude Code to build a personal knowledge system, configure a development environment, and build this site.Mon, 09 Mar 2026 00:00:00 GMThttps://nicholas-velten.xyz/posts/hello/https://nicholas-velten.xyz/posts/hello/Why I started writing here — on thinking in public and building the habit of writing.Sun, 08 Mar 2026 00:00:00 GMT