ELECT: Enabling Erasure Coding Tiering for LSM-tree-based Storage

Explore a 22-minute conference talk from USENIX FAST '24 that introduces ELECT, a novel distributed key-value store designed to optimize storage efficiency and performance in tiered architectures. Learn how ELECT leverages erasure coding and replication techniques in conjunction with log-structured merge trees to address the challenges of skewed workloads in practical key-value storage systems. Discover how this innovative approach achieves significant storage savings in the hot tier while maintaining high performance and data availability guarantees compared to traditional replication-based systems like Cassandra. Gain insights into ELECT's hotness-aware data conversion and offloading mechanisms, as well as its tunable parameter for balancing storage savings and access performance.