| 摘要 |
Disclosed in one example is a data access method in which a request for application data from a first application is received. The application data is searched for in a first cache and responsive to a miss from the first cache, a second cache is contacted over a network and searched. Responsive to a miss from the second cache, a third cache is contacted over a network and searched. The third cache being specific to one of a plurality of geographical areas, the third cache storing data for the first application and a plurality of other applications executing in that geographical area, the searching for the application data in the third cache including searching data stored by the plurality of other applications and data stored by the first application. If the third cache misses, a persistent store is contacted over a network and searched. If any of the first, second, or third caches hits, receiving the application data.
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