21CTO

Jul 10, 2017 · Databases

Why Traditional Block Compression Fails and How Terark’s Searchable Compression Transforms Databases

This article examines the limitations of conventional block compression in modern databases, introduces FM-Index and its drawbacks, and explains how Terark's searchable compression—combining CO-Index for keys and PA‑Zip for values—delivers higher compression ratios, faster random reads, and eliminates double‑caching overhead.