Explore how Uber builds fault-tolerant systems using Apache Kafka in this conference talk. Dive into the challenges of distributed systems and learn how Uber handles failures gracefully at massive scale. Discover the implementation of reliable redeliveries and dead letter queues for streaming processing and event-driven architectures. Understand how Uber leverages Kafka's high-performance capabilities to create competing consumption semantics, out-of-order message acknowledgment, retries, and in-process fanout features. Gain insights into building robust, scalable systems that can withstand network errors, replication issues, and downstream dependency outages.