Trie-Based Indexing

ScyllaDB has transitioned to a Trie-based index format for SSTables, which became the default in ScyllaDB 2026.2. This change significantly improves read performance by optimizing cache efficiency, reducing disk I/O, and lowering memory overhead compared to the legacy three-layer lookup format. Benchmarks show throughput increases of 30% to 230% and latency reductions of 31% to 63% for various read workloads, with negligible impact on the write path.