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Learn about the hidden dangers and operational challenges of leader election in distributed systems through this 29-minute conference talk from SREcon25 EMEA. Explore the theory and practice of fencing mechanisms, illustrated by a real-world case study of a serious Google service outage that occurred despite following best practices. Discover why reliable leader-elected services require more than just proven consensus implementations and basic high availability strategies. Examine the operational complexities that arise when managing leader-elected services and explore alternative design patterns that can avoid these pitfalls altogether. Gain insights into the practical considerations for implementing strong consistency in distributed systems and understand when leader election may not be the optimal solution for managing critical state.
