公开(公告)号：EP1415236A1

公开(公告)日：2004-05-06

申请号：EP02765841.8

申请日：2002-07-15

申请人： Bea Systems, Inc.

发明人： HALPERN, Eric, M. ,  PEDDADA, Prasad ,  MESSINGER, Adam ,  JACOBS, Dean, Bernard ,  PULLARA, Sam

IPC分类号： G06F15/16 ,  G06F15/173

CPC分类号： H04L67/1027 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/1034 ,  H04L67/14 ,  H04L67/142 ,  H04L69/40

摘要： A session replication system (100) provides real-time data replication without unnecessarily slowing down the user experience. A system in accordance with the present invention may utilize a primary server (104) to serve requests from a network client (102), as well as a secondary server (110) to replicate the session information. When a request is received on the session, an attempt may be made to serve the request on the primary server (104). If the primary is unable to receive or respond to the request, the request may be served on the secondary application server or on a new primary server. If the secondary server (110) receives the request, the secondary server may become the new primary server. If a new primary server is selected, the new primary may request the session information from the secondary server.

公开(公告)号：EP2021910A2

公开(公告)日：2009-02-11

申请号：EP07709948.9

申请日：2007-01-04

申请人： BEA Systems, Inc.

发明人： REVANURU, Naresh ,  FUNG, Priscilla, C. ,  RANGANATHAN, Venkatesan ,  FISKE, Aaron ,  JACOBS, Dean, Bernard ,  PEDDADA, Prasad

IPC分类号： G06F7/00

CPC分类号： H04L67/325

摘要： One embodiment of the present invention comprises determining a cluster leader and using the cluster leader to set up a lease table at an application server of a cluster of application servers. The lease table can be used to maintain at least one lease for a singleton service.

公开(公告)号：EP1963985A1

公开(公告)日：2008-09-03

申请号：EP06749204.1

申请日：2006-04-04

申请人： BEA Systems, Inc.

发明人： PEDDADA, Prasad

IPC分类号： G06F15/173

CPC分类号： H04L41/0663 ,  H04L67/02 ,  H04L67/1002 ,  H04L67/1027 ,  H04L67/1034 ,  H04L67/14 ,  H04L69/40 ,  Y04S40/166

摘要： A system and method for enabling site failover in an application server or clustered environment. In addition to providing HTTP session state replication across servers within a cluster, the invention provides the ability to replicate HTTP session state across multiple clusters. This improves high-availability and fault tolerance by allowing clusters to be spread across multiple geographic regions, power grids, and Internet service providers.

公开(公告)号：EP1599793A2

公开(公告)日：2005-11-30

申请号：EP04714154.4

申请日：2004-02-24

申请人： Bea Systems Inc.

发明人： HALPERN, Eric, M. ,  PEDDADA, Prasad ,  REVANARU, Naresh

IPC分类号： G06F9/00 ,  G06F9/46 ,  G06F15/16

CPC分类号： G06F9/5033 ,  G06F9/505

摘要： A system and method for server load balancing that includes server affinity. The system can be incorporated into application servers to support load balancing algorithms for RMI objects that provide server affinity. Server affinity uses smart load balancing for external client connections in such a way that it uses preexisting connection and reduces overhead: the client considers its existing connections to the application server instances when choosing the server instance on which to access a service. If a service is configured for server affinity, the client-side stub attempts to choose a server instance to which it is already connected, and continues to use the same server instance for method calls. All stubs on that client will attempt to use that server instance. If the server instance becomes unavailable, the stubs fail over, if possible, to a server instance to which the client is already connected.