<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>David Kjerrumgaard — Blog</title><description>Globally recognized expert in real-time data, messaging systems, and Big Data technologies.</description><link>https://streaming-expert.com/</link><item><title>Building Personalized Feeds with Broker-Side Filtering in Apache Pulsar</title><link>https://streaming-expert.com/blog/building-personalized-feeds-with-broker-side-filtering/</link><guid isPermaLink="true">https://streaming-expert.com/blog/building-personalized-feeds-with-broker-side-filtering/</guid><description>Why filtering messages at the broker — instead of in every consumer — is the key to building scalable personalized feeds, and how Pulsar makes it possible.</description><pubDate>Mon, 15 Sep 2025 00:00:00 GMT</pubDate></item></channel></rss>