Snapshots

A deep dive into copy‑on‑write B‑tree design, showing how major systems achieve efficient snapshots and offering actionable patterns for engineers.

A deep dive into the mechanics of copy‑on‑write B‑trees and why they power instant snapshot features in today’s high‑performance databases.

Copy-on-Write B‑Trees provide an elegant mechanism for fast, consistent snapshots, cutting write amplification and lock contention. This post explains the data structure, its snapshot workflow, and real‑world performance gains.

Learn how copy‑on‑write B‑trees work, why they make snapshots cheap, and what trade‑offs you should weigh when choosing this storage engine.

Copy‑on‑write B‑trees let databases capture point‑in‑time snapshots without blocking writers, enabling true atomic reads and fast recovery.