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Cache

pc

A cache is a hardware or software component that stores data to serve future requests faster.

expanded

In personal computing, a cache is used to temporarily store frequently accessed or recently accessed data to improve performance by reducing the time it takes to retrieve this data. This is critical in applications requiring quick access to memory or data, such as web browsers or CPU operations. Caches can significantly enhance retrieval speed by minimizing access to slower storage levels.

examples

An L1 cache in an Intel Core i7 processor with a size of 128 KB per core.

L1 caches are used in microprocessors to hold instructions or data and are accessed by the CPU more quickly than the main memory, enhancing computational speed and efficiency.

A web browser cache that stores website assets such as HTML, CSS, and JavaScript files, substantially enhancing page load times.

In web browsers, the cache is used to store parts of web pages to minimize the need to re-download content, improving loading efficiency when the same pages are revisited.

related terms

Memory
A component that stores data and instructions for immediate access by the CPU.
Storage
Storage refers to the component or device used to store digital data within a computer system.
Random Access Memory (RAM)
RAM is a type of computer memory that allows data to be accessed directly in any order.
Latency
Latency is the delay before a transfer of data begins following an instruction for its transfer.
Header
A personal computer (PC) is a multi-purpose microcomputer designed for individual use.