Patrick P. C. Lee

Mitigating latency fluctuations for distributed key-value (KV) stores is critical, yet it is often hindered by the tight coupling of foreground and background tasks related to data distribution and storage management. Using Cassandra, a widely deployed distributed LSM-tree-based KV store, as a ca...

Efficient cloud computing relies on high-performance Elastic Block Storage (EBS) services, where virtual disk (VD) image loading significantly affects user experience. While the commonly used "lazy loading" approach reduces cold-start time from minutes to sub-seconds, our trace analysis of around...

I/O efficiency is critical for erasure-coded repair performance in modern distributed storage. We propose LESS, a family of repair-friendly erasure code constructions that reduces both the amount of data accessed and the number of I/O seeks in single-block repairs, while ensuring balanced reducti...