CacheFS, also known as Cache File System, is a technique in computer systems to improve performance by storing often-used data in cache. This cached data can be accessed more rapidly than if it had to be fetched from its original location like a hard disk or remote server.
The CacheFS works by intercepting file system requests and checking whether the requested data is already present in the cache. If so, it retrieves the data from the cache which is usually located on faster storage media such as RAM or solid-state drives (SSDs). In case, the desired information is not available through the cache, it will have to be obtained directly from the source and then copied to the cache so that it may be served back to whoever asked for it.
This method proves extremely valuable especially where there exist significant differences in access times between caches and their actual storage devices like networked file systems or slow disk access systems. By caching frequently accessed data, Cache FS can greatly reduce access latency and improve overall system performance.
The CacheFS works by intercepting file system requests and checking whether the requested data is already present in the cache. If so, it retrieves the data from the cache which is usually located on faster storage media such as RAM or solid-state drives (SSDs). In case, the desired information is not available through the cache, it will have to be obtained directly from the source and then copied to the cache so that it may be served back to whoever asked for it.
This method proves extremely valuable especially where there exist significant differences in access times between caches and their actual storage devices like networked file systems or slow disk access systems. By caching frequently accessed data, Cache FS can greatly reduce access latency and improve overall system performance.