Caching facilities are systems designed to temporarily store frequently accessed data to improve retrieval speed and efficiency. By keeping copies of this data closer to the user or application, caching reduces the time it takes to access information, leading to faster performance and reduced load on primary data sources. These facilities can be found in various contexts, such as web browsers, where they store images and web pages, or in databases, where they keep query results. Common types of caching include memory caching, disk caching, and content delivery networks (CDNs), each serving to enhance user experience and optimize resource usage.