ScyllaDB's Trie-Based Index: Up to 3X More Throughput

2026-07-03

ScyllaDB 2026.2 makes its trie-based SSTable index format the default, replacing separate summary and index files with a prefix tree that improves cache efficiency, reduces disk I/O, and lowers memory overhead. In ScyllaDB's benchmarks, the new index delivered 20% to 230% higher throughput and 31% to 63% lower latency across four read-heavy workloads, with negligible impact on writes.