Custom caching

• US 8,301,590 B2
• Filed: 02/14/2011
• Issued: 10/30/2012
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: PayPal, Inc. (PayPal Holdings, Inc.)
• Original Assignee: eBay Inc.
• Inventors: Kasten, Christopher J., Seitz, Greg
• Primary Examiner(s): LEROUX, ETIENNE PIERRE
• Application Number:
  US13/026,909
• Publication Number:
  US 20110137914A1
• Time in Patent Office: 624 Days
• Field of Search: 709/235, 711/133, 711/141, 726/26, 707/610
• US Class Current: 707/610
• CPC Class Codes: G06F 12/0808 with cache invalidating means G06F12/0815 takes precedence
• CPC Class Codes: G06F 12/0875 with dedicated cache, e.g. instruction or stack
• CPC Class Codes: G06F 12/12 Replacement control
• CPC Class Codes: G06F 12/128 adapted to multidimensional cache systems, e.g. set-associative, multicache, multiset or multilevel
• CPC Class Codes: G06F 16/2272 Management thereof
• CPC Class Codes: G06F 16/2455 Query execution
• CPC Class Codes: G06F 16/24552 Database cache management
• CPC Class Codes: G06F 16/2471 Distributed queries
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: G06F 2212/452 Instruction code
• CPC Class Codes: G06F 2212/465 Structured object, e.g. database record
• CPC Class Codes: G06F 9/5016 the resource being the memory
• CPC Class Codes: G06F 9/54 Interprogram communication
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99944 Object-oriented database structure

Abstract

Methods and systems are presented for custom caching. Application threads define caches. The caches may be accessed through multiple index keys, which are mapped to multiple application thread-defined keys. Methods provide for the each index key and each application thread-defined key to be symmetrical. The index keys are used for loading data from one or more data sources into the cache stores on behalf of the application threads. Application threads access the data from the cache store by providing references to the caches and the application-supplied keys. Some data associated with some caches may be shared from the cache store by multiple application threads. Additionally, some caches are exclusively accessed by specific application threads.

Claims

1. A method implemented in a non-transitory computer-readable storage medium, including:

managing a first custom-defined application cache for a first application that is defined by the first application and a plurality of other first instances of the first application, via multiple first unique key definitions acquired from a first key manager, the first key manager defined by the first application;

managing a second custom-defined application cache for a second application that is defined by the second application and a plurality of other second instances of the second application, via multiple second unique key definitions acquired from a second key manager, the second key manager defined by the second application; and

synchronizing first portions of the first custom-defined application cache from a first memory heap with second portions of the second custom-defined application cache from a second memory heap, synchronization processed in accordance with a dynamically communicated instruction from a global administrator, the instruction received at a predefined interval.

2. A method implemented in a non-transitory computer-readable storage medium, including:

managing a first custom-defined application cache for a first application that is defined by the first application and a plurality of other first instances of the first application, via multiple first unique key definitions acquired from a first key manager, the first key manager defined by the first application;

managing a second custom-defined application cache for a second application that is defined by the second application and a plurality of other second instances of the second application, via multiple second unique key definitions acquired from a second key manager second key manager defined by the second application; and

synchronizing first portions of the first custom-defined application cache from a first memory heap with second portions of the second custom-defined application cache from a second memory heap, synchronization processed in accordance with a dynamically communicated instruction from a global administrator, the instruction received at a dynamically instructed interval.