The CPU Cache - Short Animated Overview

The CPU cache is a small, high-speed memory located close to the processor core, designed to improve the efficiency of accessing frequently used data and instructions. It bridges the significant speed gap between the processor and main memory, reducing latency and enhancing performance.

The cache uses the principles of spatial and temporal locality to store and deliver data the CPU is likely to need next.

It is divided into cache lines, which store fixed-size blocks of data. Cache associativity—such as direct-mapped, set-associative, or fully-associative caches—determines how memory blocks are mapped to cache lines.

To manage limited space, replacement algorithms like the Least Recently Used algorithm decide which data to evict when the cache is full.

Additionally, the cache uses a specific write policy to determine how changes to cached data are synchronized with main memory. Common policies include write-through and write-back.

CPU Cache Playlist: https://youtube.com/playlist?list=PL38NNHQLqJqYnNrTenxBvGJSPCkV9EOWk&si=c8iKNmWxzEq7qODB

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