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Explore a comprehensive conference talk from NDC London where Martin Thwaites and Ian Cooper delve into the challenges of understanding flow in event-driven architectures and how modern observability techniques can address these challenges. Learn why traditional approaches like logging often create more noise than signal when observing flow across distributed system components. Discover effective techniques for modeling telemetry, implementing Semantic Conventions for Messaging, and utilizing W3C Trace Context standards to gain clearer insights into system operations. Through practical demonstrations in both C# and JavaScript, examine different approaches to observing system flow across various middleware transports including Azure Service Bus and Kafka, along with their respective trade-offs. Gain valuable knowledge about tracking message paths through components, understanding why flows take fault paths, and identifying where and why errors occur in complex distributed systems.
