Zheng Zeng

US Patent:

6678791, Jan 13, 2004

Filed:

Aug 4, 2001

Appl. No.:

09/923072

Inventors:

Lawrence Jacobs - Redwood City CA
Xiang Liu - San Mateo CA
Shehzaad Nakhoda - Palo Alto CA
Zheng Zeng - Foster City CA
Rajiv Mishra - Foster City CA

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 1200

US Classification:

711118, 709203, 709227, 711133

Abstract:

A session-aware system and method for caching and serving data. A session-aware cache system stores data that may be designated or restricted for service to registered sessions or data requests that include session identifiers. A request for a restricted set of cached data that omits a session identifier is passed to an origin server (e. g. , web server, data server) so that a session may be established and a session identifier assigned. The session-aware cache system may determine whether a session identifier of a data request is near expiration. If so, the request may be passed to the origin server so that the session lifetime may be extended.

US Patent:

6785769, Aug 31, 2004

Filed:

Aug 4, 2001

Appl. No.:

09/923073

Inventors:

Lawrence Jacobs - Redwood City CA
Xiang Liu - San Mateo CA
Shehzaad Nakhoda - Palo Alto CA
Zheng Zeng - Foster City CA
Rajiv Mishra - Foster City CA

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 1200

US Classification:

711118, 711133, 711146, 709203, 709232

Abstract:

A system and method for caching multiple versions of a data item (e. g. , web page, portion of a web page, data table, data object) and determining which of the multiple versions is most responsive to a particular request. A request is received and an initial cache lookup is done with a data identifier (e. g. , URL, URI) extracted from the request. If the lookup is unsuccessful (i. e. , nothing is returned), the request is passed to an origin server (e. g. , web server, data server). If the lookup is successful, it may provide or identify the desired data item (if one version of the data item is served for all requests) or a policy to be applied to determine which version to serve. The cache applies the policy, which identifies the additional parameters, cookies or other information to be considered, and a second lookup is done with the additional information.

US Patent:

6789170, Sep 7, 2004

Filed:

Aug 4, 2001

Appl. No.:

09/923103

Inventors:

Lawrence Jacobs - Redwood City CA
Xiang Liu - San Mateo CA
Shehzaad Nakhoda - Palo Alto CA
Rajiv Mishra - Foster City CA
Zheng Zeng - Foster City CA
Sachin Desai - San Francisco CA

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 1200

US Classification:

711133, 709203, 709227

Abstract:

A system and methods are provided for enabling a cache system, operating on behalf of a data server (e. g. , web server, application server, database server), to cache and customize one set of data (e. g. , a web page) in different ways for different requests (e. g. , to include a clients name, account information, a special logo). An application that generates or produces the data on the data server embeds or includes special tags or markers in customizable data, to identify where custom data should be inserted or substituted. The custom data may be included in client requests or retrieved from the cache system, data server or elsewhere. When the cache system receives a new request for cached data that is customizable, the data is retrieved from cache, the custom data is retrieved and inserted at the corresponding tags and the customized data is served.

US Patent:

6799251, Sep 28, 2004

Filed:

Aug 29, 2000

Appl. No.:

09/649850

Inventors:

Lawrence Jacobs - Redwood City CA
Roger Bamford - Woodside CA
Xiang Liu - San Carlos CA
Shehzaad Nakhoda - Palo Alto CA
Zheng Zeng - Foster City CA

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 1212

US Classification:

711133, 711156

Abstract:

A method and system are provided for caching data in a manner that substantially maintains a desired level of system performance. A cache server receives data requests on behalf of a data server. When new data on the data server is generated or stored that replaces or changes data cached on the cache server, the corresponding data on the cache server is invalidated. A subsequent request for the new data may be forwarded to the data server or may be served with the invalid data on the cache server. Determining how to serve the request may depend on a possible impact on system performance and/or one or more characteristics or parameters associated with the requested data. The impact on system performance may be determined by examining actual and/or desired operating conditions (e. g. , rate or number of requests, load on the data server, response time to requests, number of open connections, throughput). The data parameters that may be considered may include the popularity of the data; frequency of access to the data; number of accesses; age, size, or type of the data; whether or when a version of the data on the cache server is invalid; how severely invalid the cache server version is; the cost of retrieving the data from the data server; etc.

US Patent:

7076608, Jul 11, 2006

Filed:

Dec 2, 2003

Appl. No.:

10/726112

Inventors:

Senthilnathan Arunagirinathan - Fremont CA, US
Zheng Zeng - Foster City CA, US
Yuhui Zhu - Fremont CA, US
Shu Ling - San Mateo CA, US
Fredric Goell - Foster City CA, US
Xiang Liu - San Mateo CA, US
Lawrence Jacobs - Redwood City CA, US

Assignee:

Oracle International Corp. - Redwood Shores CA

International Classification:

G06F 12/00

US Classification:

711118, 711133, 711144, 709203, 707203

Abstract:

A system and method for facilitating the invalidation of cached data, in which the data to be invalidated are identified using information other than a primary key. The primary key for a cached data object, such as a web page, may be a Uniform Resource Locator (URL). Instead of using an object's URL to identify to a cache the data to be invalidated, a secondary key is used, such as the object's data source or a template from which the object was created. An application communicates the secondary key to a cache, and the cache identifies cached objects that match the secondary key. Those data objects are then invalidated without having to issue multiple invalidation messages from the application.

US Patent:

7103714, Sep 5, 2006

Filed:

Aug 4, 2001

Appl. No.:

09/923102

Inventors:

Lawrence Jacobs - Redwood City CA, US
Xiang Liu - San Mateo CA, US
Shehzaad Nakhoda - Palo Alto CA, US
Rajiv Mishra - Foster City CA, US
Zheng Zeng - Foster City CA, US
Sachin Desai - San Francisco CA, US

Assignee:

Oracle International Corp. - Redwood Shores CA

International Classification:

G06F 12/00

US Classification:

711113, 709228, 709229, 711130, 711133

Abstract:

A system and method for enabling a cache system, operating on behalf of a data server (e. g. , web server, application server, database server), to serve one set of data in response to multiple requests that differ in content or form. In particular, the requests may include different session identifiers for identifying different users, clients or sessions, but they target the same basic set of data (e. g. , a web page). When a set of data is cached in response to a request having one session identifier, it can also be served in response to another request having a second session identifier because the session identifiers are deleted, masked, replaced or otherwise ignored when searching the cache system for data responsive to the second request. Also, the cache system may include a requestor's session identifier as part of a data identifier (e. g. , URI, hyperlink) within data served to the requester.

US Patent:

7509404, Mar 24, 2009

Filed:

Mar 5, 2001

Appl. No.:

09/800115

Inventors:

Alok Agrawal - Cambridge MA, US
Ramkumar Venketaramani - Foster City CA, US
Leslie Bruce Lowenthal - Los Gatos CA, US
Lawrence Jacobs - Redwood City CA, US
Xiang Liu - San Mateo CA, US
Shehzaad Nakhoda - Palo Alto CA, US
Zheng Zeng - Foster City CA, US
Rajiv Mishra - Foster City CA, US

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 15/16

US Classification:

709223, 709217, 707 10, 718101, 710 52

Abstract:

A method of servicing a request for a document over a computer network includes independently caching portions of pages called blocks. Each block includes a reference to a data source and code that is adapted to access the data source and to format the data accessed from the data source. When a request for a page is received over a computer network, one or more of the plurality of blocks defined in the script of the requested document may be retrieved from a cache memory. Any block that is not found in the cache memory is dynamically generated and a copy thereof is stored in the cache memory. The requested page may then be assembled from the page blocks retrieved from the cache memory and/or the dynamically generated page blocks.

US Patent:

7932581, Apr 26, 2011

Filed:

May 12, 2009

Appl. No.:

12/464107

Inventors:

Ming-Tzong Yang - Hsinchu County, TW
Ching-Chung Ko - Hsinchu County, TW
Tung-Hsing Lee - Taipei County, TW
Zheng Zeng - Fremont CA, US

Assignee:

Mediatek Inc. - Science-Based Industrial Park, Hsin-Chu

International Classification:

H01L 29/66

US Classification:

257565, 257E29187, 438204

Abstract:

A lateral bipolar junction transistor includes an emitter region; a base region surrounding the emitter region; a gate disposed at least over a portion of the base region; a collector region surrounding the base region with an offset between an edge of the gate and the collector region; a lightly doped drain region between the edge of the gate and the collector region; a salicide block layer disposed on or over the lightly doped drain region; and a collector salicide formed on at least a portion of the collector region.