<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>depthfirst</title><description>Data engineering, below the surface.</description><link>https://depthfirst.dev/</link><language>en-us</language><item><title>Before you optimize the pipeline, measure the wait</title><link>https://depthfirst.dev/blog/before-you-optimize-the-pipeline/</link><guid isPermaLink="true">https://depthfirst.dev/blog/before-you-optimize-the-pipeline/</guid><description>A practical starting point for finding the time your data pipeline loses between useful work.</description><pubDate>Sun, 13 Sep 2026 00:00:00 GMT</pubDate><category>Data pipelines</category><category>Performance</category></item></channel></rss>