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Explore advanced broker-side filtering techniques using Apache Pulsar in this 34-minute conference talk that demonstrates how to build personalized, real-time feeds at scale. Learn to implement a Pulsar Function-based pattern for filtering and routing messages across multiple topics based on dynamic subscriber-defined key sets, originally designed for a real-time stock portfolio tracker but applicable to numerous use cases including personalized content feeds, IoT device filtering, geo-targeted alerts, and dynamic subscription models. Discover how to implement a dynamic filtering layer with Pulsar Functions, master techniques for maintaining per-user keysets efficiently, understand scaling patterns for horizontal distribution and user-specific routing, and see how this solution applies across various industries and domains. Gain practical insights for building personalized user experiences, targeted analytics, and smart alerting systems through this reusable pattern for scalable, filter-based stream routing with Apache Pulsar.
