Explore a groundbreaking approach to fault-tolerant replication for microsecond-scale applications in this 20-minute conference talk from OSDI '20. Dive into the Mu system, which achieves replication in less than 1.3 microseconds and fail-over in under a millisecond, significantly outperforming previous systems. Learn how Mu leverages RDMA to implement state machine replication with strong consistency, addressing challenges such as concurrent leaders and log garbage collection. Discover the system's performance benefits when applied to various applications, including a financial exchange app, Redis, Memcached, and HERD. Gain insights into the innovative combination of RDMA permissions and distributed algorithmic design that enables Mu's exceptional speed and efficiency in replicating microsecond-scale applications.