The cache directory is in communication with the write cache and the at least one read cache.

A cache directory is also provided to track cache lines in the write cache and the at least one read cache.

The hierarchical cache includes a first cache, a second cache, and the content library, where the first cache has a length based on an age of the second cache.

The at least one read cache is in communication with the write cache.

The shared cache (115) can be partitioned into the partitioned cache (120).

The cache can be a database cache.

The cache service stores an expiration value with the data in the cache.

The cache (5) is divided into a plurality of cache lines (6).

The key combination unit is fixed between the upper cover and the lower cover; light leakage key marks are arranged on surfaces of the key caps; and the middle plate and the circuit layer are made of light-permeable materials.

A data cache of the processor is a one-level cache, wherein the one-level cache comprises a private data cache and a shared data cache.

The victim cache comprising a most recently used control module to identify a cache location having been most recently read as a least recently used cache location.

The progressive cache includes caches arranged in an order from least finished cache elements to most finished cache elements.

Common types of caches include browser cache, disk cache, memory cache, and processor cache.

Common types of caches include browser cache, disk cache, memory cache, processor cache.

A private instruction cache is used for storing an instruction cache line which is replaced from the shared instruction cache.