US 8,914,407 B2Granted

Metadata cache management

AssigneeInternational Business Machines Corporation

InventorsHiroyuki Miyajima, Masaru Yamamoto

Life of this patent

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Abstract

Managing a cache includes determining from metadata of a received service request whether a cache data response may satisfy the request as a function of recognizing a cacheable method name specification within request metadata by a service provider associated with the request, and determining whether the request is an inquiry or a request as a function of comparing an update frequency specification or a time interval period to a value of a time parameter associated with the cacheable method name in the metadata, in order to decide if the request may be satisfied by the cached data. Aspects also include searching the cache for the data response if determined the data is cacheable and the request is an inquiry, and sending the request on to a service provider if the data response is not a cacheable response, or the request is an update request.

Claims20

Dependent claims

A method for managing a cache, comprising:

providing a cache server processing unit that determines from metadata of a received first service request whether a data response to a previously received second request and satisfying the first request may be cached in a cache managed by the cache server by determining if an operation name of a command within the received first request is defined in combination with a return data identification as a cacheable method name specification within the first request metadata;
if determined that the command operation name is defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, determining that the first request is an inquiry request that may be satisfied by a data value from the previously received second request if a value of a time parameter associated with the cacheable method name in the metadata is not aged out by exceeding, since a last service request, an update frequency specification or a time interval period;
searching the cache for the data response to the second request in satisfaction of the received first service request if determined that the command operation name is defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, and that the first request is the inquiry request;
and
sending the request on to a service provider through a network communication for return of a service provider response if determined that the command operation name is not defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, or that the first request is not the inquiry request.

2 more elements

Apparatus for managing a cache, comprising:

a network cache server comprising a processing unit in communication with a computer readable memory and a tangible computer-readable storage medium;
wherein the processing unit, when executing program instructions stored on the tangible computer-readable storage medium via the computer readable memory:
determines from first metadata of a received first service request whether a data response to a previously received second request and satisfying the first request may be cached in a cache managed by the cache server by determining if an operation name of a command within the received first request is defined in combination with a return data identification as a cacheable method name specification within the first request metadata;
if the command operation name is determined as defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, determines that the first request is an inquiry request that may be satisfied by a data value from the previously received second request if a value of a time parameter associated with the cacheable method name in the metadata is not aged out by exceeding, since a last service request, an update frequency specification or a time interval period;
searches the cache for the data response to the second request in satisfaction of the received first service request if determined that the command operation name is defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, and that the first request is the inquiry request;
and
sends the request on to a service provider through a network communication for return of a service provider response if determined that the command operation name is not defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, or that the first request is not the inquiry request.

4 more elements

A computer program product for managing a cache, the computer program product comprising:

a computer readable storage medium;
first program instructions to control a cache by determining from first metadata of a received first service request whether a data response to a previously received second request and satisfying the first request may be cached by determining if an operation name of a command within the received first request is defined in combination with a return data identification as a cacheable method name specification within the first request metadata;
second program instructions to, if the command operation name is determined as defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, determine that the first request is an inquiry request that may be satisfied by a data value from the previously received second request if a value of a time parameter associated with the cacheable method name in the metadata is not aged out by exceeding, since a last service request, an update frequency specification or a time interval period;
third program instructions to search the cache for the data response to the second request in satisfaction of the received first service request if determined that the command operation name is defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, and that the first request is the inquiry request;
and
fourth program instructions to send the request on to a service provider through a network communication for return of a service provider response if determined that the command operation name is not defined in combination with the return data identification within the received first request metadata as the cacheable method name specification, or that the first request is not the inquiry request;
and wherein
the first, second, third and fourth program instructions are stored on the computer readable storage medium.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/765,928Filed 13 Feb 2013 · continuation
Priority: 27 May 2010
Published: US 2013/0159341 A120 Jun 2013
Granted: 16 Dec 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06F 12/0802
In hierarchically structured memory systems, e.g. virtual memory systems: addressing of a memory level in which the access to the desired data or…
G06F 16/24
Of structured data, e.g. relational data: querying
G06F 16/9574
Browsing optimisation, e.g. caching or content distillation: of access to content, e.g. by caching
G06F 2212/1041
Providing a specific technical effect: resource optimization

Family

Application12/788,799Parent of this continuation · filed 27 May 2010
US 2013/0159341 A1Pre-grant publication · published 20 Jun 2013
US 8,402,049 B2Parent of this continuation
US 2011/0295874 A1Published application
US 8,914,407 B2This patent

From the US filing history. Foreign family members aren’t listed.