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Cache Coherency

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macrozheng
macrozheng
May 21, 2021 · Fundamentals

Why Java’s Memory Model Matters: Unveiling the Hidden Rules of Concurrency

This article explains the hardware memory hierarchy, cache‑coherency issues, processor optimizations and instruction reordering, and shows how the Java Memory Model (JMM) defines eight operations to guarantee visibility, atomicity and ordering for multithreaded Java programs.

Cache CoherencyConcurrencyJMM
0 likes · 12 min read
Why Java’s Memory Model Matters: Unveiling the Hidden Rules of Concurrency
Qunar Tech Salon
Qunar Tech Salon
Mar 31, 2015 · Fundamentals

Understanding CPU Caches, Coherency Protocols, and Memory Models

This article provides a concise introduction to CPU cache architecture, explains read/write policies, describes cache coherency protocols such as MESI and its variants, and discusses how different memory models affect multi‑core consistency and performance.

CPU cacheCache CoherencyHardware Architecture
0 likes · 19 min read
Understanding CPU Caches, Coherency Protocols, and Memory Models