| 摘要 |
Caching data. A method may be practiced, for example, in a computing environment including a server system that provides data to client systems. The server system includes a number of caches for storing data. The method allows a least expensive cache to first cache data or return data requested by a client. The method includes receiving data to be cached at a cache. The method further includes determining that the data has not been previously cached at a preceding cache. If the data has not been previously cached at a preceding cache the data is cached at the cache. Alternatively, requests for data may be received at a first cache. If the data is at the first cache, the first cache returns the data. If the data is not at the first cache, the request for data is forwarded to a subsequent cache. |
