gyorsítótárának

Gyorsítótárnak, often translated as cache, is a temporary storage area that holds frequently accessed data. The purpose of a cache is to speed up subsequent access to that data by making it readily available. Instead of retrieving the data from its original, slower source each time it's needed, the system can pull it directly from the cache. This significantly reduces latency and improves overall performance.

Caches are used in many different computing contexts. In computer hardware, CPU caches store instructions and data that the processor is likely to use soon. Web browsers employ caches to store website elements like images and HTML files, so that when a user revisits a page, it loads much faster. Operating systems use caches to store frequently used files and disk blocks. Database systems also utilize caching to keep frequently queried data in memory for quicker retrieval.

The effectiveness of a cache depends on its hit rate, which is the percentage of times the requested data is found in the cache. A higher hit rate indicates a more efficient cache. However, caches also introduce the challenge of maintaining data consistency. When the original data changes, the cached copy must be updated or invalidated to prevent the system from using outdated information. This process is known as cache coherence. Various algorithms and strategies are employed to manage cache contents and ensure data integrity.