Architect's Guide

Feb 13, 2026 · Fundamentals

Unlocking Fast Disk Indexing: How B‑Trees, B+‑Trees & R‑Trees Work

This article explains why multi‑way search trees such as B‑trees, B+‑trees, B*‑trees and R‑trees are crucial for reducing disk I/O in large‑scale storage systems, covering their hardware background, structural definitions, height analysis, insertion and deletion algorithms, and practical examples with code and diagrams.