System and method for updating data in a cache

One or more computer-readable non-transitory storage media embodying logic that is operable when executed to:

• receive, at a computing device comprising the media, a request to write data to a first portion of a cache, the computing device further comprising a memory and a cache manager;
• write the data to the first portion of the cache;
• update, at the cache manager, a first map corresponding to the first portion of the cache, wherein the first map comprises a set of bits, each bit corresponding to a subset of the portion of the cache, and wherein each bit in the first map indicates whether data in the corresponding subset of the portion of the cache has been written to a storage;
• receive a request to read data from the first portion of the cache, wherein the request is intercepted by the cache manager;
• read from the storage communicatively linked to the computing device data according to the first map, wherein reading from the storage data according to the first map comprises reading from the storage data corresponding to the subsets of the portion of the cache that, according to the first map, do not include data that has not been written to the storage;
• update, at the cache manager, a second map corresponding to the first portion of the cache;
• set a flag based, at least in part, on the second map;
• and
• receiving a second request to read directly from the first portion of the cache based, at least in part, on the second map.

A computing system, comprising:

• a cache comprising one or more memories;
• and
• a cache manager;
• wherein the cache manager is operable to:
• receive a request to write data to a first portion of the cache;
• write the data to the first portion of the cache;
• update, at the cache manager, a first map corresponding to the first portion of the cache;
• receive a request to read data from the first portion of the cache;
• read from a storage communicatively linked to the computing system data according to the first map;
• update, at the cache manager, a second map corresponding to the first portion of the cache;
• setting a flag based, at least in part, on the second map;
• and
• permitting, upon receipt of a second request, a direct read of the first portion of cache based, at least in part, on the second map.