
Solving Data Races with Lock‑Free Atomic Compare‑and‑Swap
A deep dive into lock‑free programming using atomic compare‑and‑swap, covering theory, implementation patterns, and real‑world best practices.

A deep dive into lock‑free programming using atomic compare‑and‑swap, covering theory, implementation patterns, and real‑world best practices.
Copy‑on‑write lets multiple threads share the same memory until a write occurs, dramatically cutting duplication and boosting throughput in concurrent systems.
This article explains how copy‑on‑write (COW) B‑trees work, why they improve concurrency, and what trade‑offs they introduce for modern database engines.
Copy‑on‑write avoids costly memory allocation by sharing data until a write occurs, dramatically improving throughput in many systems.

Copy-on-Write B‑Trees provide immutable snapshots for readers while writers work on new nodes, enabling high concurrency with minimal blocking.