Unified Compaction Strategy in Cassandra 5.0 - Key Features and Benefits

Explore the new Unified Compaction Strategy (UCS) introduced in Cassandra 5.0 through this informative conference talk. Dive deep into the key features and rationale behind UCS, which aims to solve existing compaction deficiencies and improve performance across various workloads. Learn how UCS provides a common solution for leveled, tiered, and hybrid compaction schemes, potentially enhancing both read and write performance. Discover the flexible SSTable sharding scheme employed by UCS and how it selects and prioritizes SSTable sets for compaction based on overlap. Understand how UCS eliminates SSTable and compaction size problems while effectively handling time-series data. Gain insights into the strategy's ability to match or exceed the performance of STCS without space overhead requirements and its potential for making time-driven compaction decisions better than LCS. Examine real-world examples showcasing the achievements of UCS in Cassandra 5.0.

Compaction for All! Unified Compaction Strategy in Cassandra 5.0 (CEP-26) - Lorina Poland, DataStax