System, method, and computer program product for server side processing in a mobile device environment

• US 8,595,308 B1
• Filed: 11/06/2000
• Issued: 11/26/2013
• Est. Priority Date: 09/10/1999
• Status: Active Grant

• Current Assignee: iAnywhere Solutions Incorporated (SAP SE)
• Original Assignee: iAnywhere Solutions Incorporated (SAP SE)
• Inventors: Kloba, David D., Gray, Michael R., Moore, David M., Whittaker, Thomas E., Williams, David J., Weinstein, Rafael Z., Freeman, Joshua E., Upson, Linus M., Landray, Tashana K.
• Primary Examiner(s): MIRZA, ADNAN M
• Application Number:
  US09/705,914
• Time in Patent Office: 4,768 Days
• Field of Search: 709/207, 709/227, 709/228, 709/248, 709/250, 709/252
• US Class Current: 709/207
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: G06F 16/972 Access to data in other repository systems, e.g. legacy data or dynamic Web page generation
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/289 Intermediate processing functionally located close to the data consumer application, e.g. in same machine, in same home or in same sub-network
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 67/5682 Policies or rules for updating, deleting or replacing the stored data
• CPC Class Codes: H04L 67/59 Providing operational support to end devices by off-loading in the network or by emulation, e.g. when they are unavailable
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal

Abstract

Described herein are systems, methods, computer program products, and combinations and sub-combinations thereof, for enabling web content (as well as other objects) to be loaded on mobile devices (as well as other types of devices), and for users of mobile devices to operate with such web content on their mobile devices in an interactive manner while in an off-line mode.

Claims

1. A method in a server for caching device specific content, comprising the steps of:

(1) receiving a request for a data object from a device;

(2) determining whether the data object is cached in a form specific to a characteristic of the requesting device;

(3) retrieving the cached data object, if found to be cached in step (2);

(4) providing the retrieved data object to the requesting device during a synchronization operation for the requesting device;

(5) polling a cache for volume of cached objects expiring at the same time; and

(6) randomizing expiration of cached objects set to expire at the same time, wherein step (6) comprises the steps of;

(a) determining a freshness lifetime of a cached object;

(b) determining an age of the cached object;

(c) determining a percent of the cached object'"'"'s freshness lifetime;

(d) retrieving the cached object from the cache, if the percent of the cached object'"'"'s freshness lifetime is less than the percent of the server freshness lifetime; and

(e) stochastically determining if the cached object has expired, if the percent of the cached object'"'"'s freshness lifetime is equal to or greater than a percent of a server freshness lifetime.

2. The method of claim 1, further comprising the steps of:

(7) retrieving the data object from a provider, if the data object is not found to be cached in step (2); and

(8) transforming the retrieved data object into a form specific to the characteristic of the requesting device.

3. The method of claim 2, further comprising the step of caching the transformed data object if information retrieved in step (7) indicates that the retrieved data object is cacheable or if it is possible to override information from the provider.

4. The method of claim 2, wherein step (8) further comprises the step of transforming the retrieved data object into a form suitable for use and display on the requesting device.

5. The method of claim 2, wherein step (7) further comprises the step of retrieving from the provider information that indicates when the retrieved data object will expire.

6. The method of claim 1, farther comprising the step of caching error messages resulting from unsuccessful attempts to retrieve data objects from providers.

7. The method of claim 1, wherein step (e) comprises the steps of:

generating a random number;

retrieving the cached object from the cache, if the random number is greater than or equal to the percent of the cached object'"'"'s freshness lifetime; and

retrieving the cached object from the provider, if the random number is greater less than the percent of the cached object'"'"'s freshness lifetime.

8. A computer program product comprising a non-transitory computer readable medium including control logic stored therein, said control logic enabling a processor to perform operations to cache device specific content in a server, the operations comprising:

receiving a request for a data object from a device;

determining whether the data object is cached in a form specific to a characteristic of the requesting device;

retrieving the cached data object, if found to be cached by the determining;

providing the retrieved data object to the requesting device during a synchronization operation for the requesting device;

polling a cache for volume of cached objects expiring at the same time; and

randomizing expiration of cached objects set to expire at the same time, wherein randomizing comprises the steps of;

determining a freshness lifetime of a cached object;

determining an age of the cached object;

determining a percent of the cached object'"'"'s freshness lifetime;

retrieving the cached object from the cache if the percent of the cached object'"'"'s freshness lifetime is less than the percent of the server freshness lifetime; and

stochastically determining if the cached object has expired, if the percent of the cached object'"'"'s freshness lifetime is equal to or greater than a percent of a server freshness lifetime.

9. The computer program product of claim 8, said operations further comprising:

retrieving the data object from a provider, if the data object is not found to be cached; and

transforming the retrieved data object into a form specific the characteristic of the requesting device.

10. The computer program product of claim 9, said operations caching the transformed data object if information retrieved from the provider indicates that the retrieved data object is cacheable or if it is possible to override information from the provider.

11. The computer program product of claim 9, wherein said transforming further comprises the retrieved data object into a form suitable for use and display on the requesting device.

12. The computer program product of claim 9, wherein said retrieving further comprises retrieving from the provider information that indicates when the retrieved data object will expire.

13. The computer program product of claim 8, said operations further comprising caching error messages resulting from unsuccessful attempts to retrieve data objects from providers.

14. The computer program product of claim 8, wherein said stochastically determining if the cached object has expired comprises:

generating a random number;

retrieving the cached object from the cache, if the random number is greater than or equal to the percent of the cached object'"'"'s freshness lifetime; and

retrieving the cached object from the provider, if the random number is greater less than the percent of the cached object'"'"'s freshness lifetime.