WO2007146708A2 - Edge server failover - Google Patents

Edge server failover Download PDF

Info

Publication number
WO2007146708A2
WO2007146708A2 PCT/US2007/070532 US2007070532W WO2007146708A2 WO 2007146708 A2 WO2007146708 A2 WO 2007146708A2 US 2007070532 W US2007070532 W US 2007070532W WO 2007146708 A2 WO2007146708 A2 WO 2007146708A2
Authority
WO
WIPO (PCT)
Prior art keywords
server
rfld
rfid
state
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2007/070532
Other languages
French (fr)
Other versions
WO2007146708A3 (en
Inventor
Iwao Hatanaka
Kenneth R. Traub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEA Systems Inc
Original Assignee
BEA Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEA Systems Inc filed Critical BEA Systems Inc
Publication of WO2007146708A2 publication Critical patent/WO2007146708A2/en
Anticipated expiration legal-status Critical
Publication of WO2007146708A3 publication Critical patent/WO2007146708A3/en
Ceased legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1036Load balancing of requests to servers for services different from user content provisioning, e.g. load balancing across domain name servers
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2038Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with a single idle spare processing component
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1031Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023Failover techniques
    • G06F11/2028Failover techniques eliminating a faulty processor or activating a spare
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • H04W88/182Network node acting on behalf of an other network entity, e.g. proxy

Definitions

  • the present invention relates to Radio Frequency Identification (RlD) edge
  • RFlD Tags are becoming more and more popular as a way of tracking objects.
  • an RFID tag 102 is read by an RFlD reader 104.
  • the RFlD data can then be transferred from the RFlD reader 104 to an RFID edge server 106 that can process the RFlD data.
  • the RFID edge server 106 can send the RFID data to central server, such as RFID enterprise server 108
  • Figure 1 illustrates an RFlD system.
  • Figure 2 illustrates an RFlD system with edge server failover of one embodiment of the present invention.
  • Figure 3 illustrates a failover system for an RFID system of one embodiment of the present invention.
  • FIG. 2 shows a system where RFID server 202 provides for failover for a
  • the RFlD edge servers 20) and 202 can determine what RFiD edge server should be connected to the RF ⁇ D readers 204, 206 and 208.
  • the other RFlD edge i ⁇ servers can drop any of their connections to any of the RFID readers 204, 206 and 208.
  • One embodiment is a system comprising a first RFJD edge server 201 and a second RFiD edge server 202 that arbitrate which RFID edge server will be active. f ⁇ OlOj Upon start up the first and second RFlD edge server 201 and 202 can race to get R.F ⁇ D readers, then the RFID server with the least number of RFfD readers can give up the
  • JOOl IJ Automatic failover of the RF ⁇ D edge servers 20! and 202 can be done. Reader connections can be reset during failover.
  • the first RFiD edge server can be associated with a failover agent that receives
  • the failover agent can be a software component that starts, stops, and monitors the health of an application, and takes corrective actions to regain application availability upon failure
  • 0014 ⁇ Failover can be a backup operation that automatically switches to a standby
  • the failover agent or other code can receive heartbeats from first and second
  • RFlD edge servers 201 and 202 Upon start up the first and second RFID edge server 201
  • 30 and 202 can race to get RFlD readers 204. 206 and 208, and then arbitrate who will be connected to all of the RF ⁇ D readers.
  • An administrator of a system running the RFlD edge server can set up the system so that a primary RFID edge server can failover to a secondary RFID edge server if the primary edge server fails or is shutdown.
  • Automated failo ⁇ er support for the RFID edge server can allow for continuous and uninterrupted operations.
  • the fail over solution can entai I the fo ⁇ low ing.
  • FIG. 3 shows a primary and secondary server each am an RFlD Exlge Server and a Failover Agent Upon startup, each server can launch the failover agent. The failover agent determines whether or not to start the RFID server on that server based on telemetry heartbeats received from both RFiD edge server instances
  • Each failover agent can receive telemetry heartbeats from both RFlD Edge
  • one of the failover agents can start its RFID edge server instance.
  • the RFID edge server instance can connect to all of the configured RFID readers and generate Electronic Product Code Information Service
  • the fa ⁇ over agent can utilize the following, or an alternate, decision algorithm
  • the arbitration can include a down state, an up state and a partial (1/2) up state.
  • Telemetry Reports indicate 1 50% of readers are up. • HP State: Telemetry heartbeat has been received in the last « seconds and Tel emetry Reports indicate > 50 O/ ⁇ of readers are up.
  • One embodiment includes a computer program product which is a storage medium (media) having instructions stored thereon/in which can be used to program a computer to perform any of the features present herein.
  • the storage medium can include, but is not limited to, any type of disk including floppy disks, optical discs, DYD, CD-ROMs, micro drive, and magneto-optical disks, ROKIs, RAKIs, EPROMs, EEPROMs, DRAMs, Hash memory of media or device suitable for storing instaictions and/or data stored on any one of the computer readable medium (media), the present invention can include software for controlling both the hardware of the general purpose/specialized computer or microprocessor, and for enabling the computer or microprocessor to interact with a human user or other mechanism utilizing the results of the present invention.
  • Such software may include, but is not limited to, device drivers, operating systems, execution environments/containers, and user applications.
  • Embodiments of the present invention can include providing code for implementing processes of the present invention.
  • the providing can include providing code to a user in any manner.
  • the providing can include transmitting digital signals containing the code to a user; providing the code on a physical media to a user, or any other 5 method of making the code available.
  • Embodiments of the present invention can include a computer implemented method for transmitting code which can be executed at a computer to perform any of the processes of embodiments of the present invention.
  • the transmitting can include transfer through any portion of a network, such as the Internet; through wires, the atmosphere or id space; or any other type of transmission.
  • the transmitting can include initiating a transmission of code; or causing the code to pass into any region or country from another region or country.
  • transmitting includes causing the transfer of code through a portion of a network as a result of previously addressing and sending data including the code to a user.
  • a transmission to a user can include any transmission received by the user in any
  • the present invention can include a signal containing code which can be executed at a computer to perform any of the processes of embodiments of the present invention.
  • the signal can be transmitted through a network, such as the Internet; through wires, the atmosphere or space; or any other type of transmission.
  • the entire signal can be transmitted through a network, such as the Internet; through wires, the atmosphere or space; or any other type of transmission.
  • the entire signal can be transmitted through a network, such as the Internet; through wires, the atmosphere or space; or any other type of transmission.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)
  • Computer And Data Communications (AREA)

Abstract

First and second RFID edge servers can interact with RFID tag readers. The first and second RFID edge servers can arbitrate which of the first and second RFID edge servers will be active upon start up or edge server failure.

Description

EDGE SERVER FAILOVER
Inventors. Iwao Hatanaka Kenneth Traub
CLAIM OF PRIORITY
[0001 ] This application claims priority to U S. Provisional Application No.
60/812,397 entitled "Εdge Server" by Traub et a!., filed June 9, 2006 [Atty Docket No BEAS-02086US0]; and U S, Provisional Application No. 60/812,460 entitled "Enterprise Server" by Traub et al , filed June 9, 2006 [Atty. Docket No BEAS-02087US0]; U.S. Provisional Application No 6O'B29,921 entitled "Edge Server Failover" by Traub et al , filed October 18, 2006 [Atty Docket No. BEAS-02101 USO]; and U.S. Utility Application No 1 1 /756,000 entitled "Edjje Server Failover" by Hatanaka et al., filed May 31, 2007 [Atty. Docket No BEAS-02101 US I j; \\ Inch are hereby incorporated by reference
COPYRIGHT NOTICE
[0002] A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever.
BACKGROUND OF INVENTION
[0003] The present invention relates to Radio Frequency Identification (RlD) edge
Servers. RFlD Tags are becoming more and more popular as a way of tracking objects. Typically, as shown in figure 1, an RFID tag 102 is read by an RFlD reader 104. The RFlD data can then be transferred from the RFlD reader 104 to an RFID edge server 106 that can process the RFlD data.
[0001] The RFID edge server 106 can send the RFID data to central server, such as RFID enterprise server 108
BRIEF DESCRIPTION OF THE DRAWINGS
[0004] Figure 1 illustrates an RFlD system.
[0005] Figure 2 illustrates an RFlD system with edge server failover of one embodiment of the present invention. |0006j Figure 3 illustrates a failover system for an RFID system of one embodiment of the present invention.
DETAILED DESCRIPTION
5 |0007 J One potential problem with the RFID system of figure ! is that if the RFID edge server 106 goes down the RFID tag 102 can not be tracked.
(0008] Figure 2 shows a system where RFID server 202 provides for failover for a
RFLD edge server 210. The RFlD edge servers 20) and 202 can determine what RFiD edge server should be connected to the RFΪD readers 204, 206 and 208. The other RFlD edge iθ servers can drop any of their connections to any of the RFID readers 204, 206 and 208.
|0009| One embodiment is a system comprising a first RFJD edge server 201 and a second RFiD edge server 202 that arbitrate which RFID edge server will be active. føOlOj Upon start up the first and second RFlD edge server 201 and 202 can race to get R.FΪD readers, then the RFID server with the least number of RFfD readers can give up the
S 5 RFID readers that it does have. In this way, the winning RFID server will be connected to all of the RFΪD readers.
JOOl IJ Automatic failover of the RFΪD edge servers 20! and 202 can be done. Reader connections can be reset during failover. |0012 j The first RFiD edge server can be associated with a failover agent that receives
20 heartbeats from both the first and second RFΪD edge servers 201 and 202. jOOI3| The failover agent can be a software component that starts, stops, and monitors the health of an application, and takes corrective actions to regain application availability upon failure |0014{ Failover can be a backup operation that automatically switches to a standby
25 server if the primary system fails or is shutdown. The system can be high availability such that it remains available despite the failure of one's components. fOOlSj The failover agent or other code can receive heartbeats from first and second
RFlD edge servers 201 and 202; and arbitrate which of the first and second RFID edge servers 201 and 202 will be active. Upon start up the first and second RFID edge server 201
30 and 202 can race to get RFlD readers 204. 206 and 208, and then arbitrate who will be connected to all of the RFΪD readers.
[0016} An administrator of a system running the RFlD edge server can set up the system so that a primary RFID edge server can failover to a secondary RFID edge server if the primary edge server fails or is shutdown. Automated failo\er support for the RFID edge server can allow for continuous and uninterrupted operations. |0017| The fail over solution can entai I the foϊ low ing.
• Fail over agents deployed for each RFID edge server
5 ♦ Automatic faϋover of primary RFID sen er to secondary RFID server upon detection of edge server failure
♦ Decision algorithm utilized by failover agent to determine which edge server to stan/stop
* RFID Reader connections re-established with edge server during faϋover processing K) |001S| Figure 3 shows a primary and secondary server each am an RFlD Exlge Server and a Failover Agent Upon startup, each server can launch the failover agent. The failover agent determines whether or not to start the RFID server on that server based on telemetry heartbeats received from both RFiD edge server instances
[0019} Each failover agent can receive telemetry heartbeats from both RFlD Edge
!5 Servers Based on a decision algorithm documented, such as that below, one of the failover agents can start its RFID edge server instance. The RFID edge server instance can connect to all of the configured RFID readers and generate Electronic Product Code Information Service
(EPClS) event data
|0020J The faϋover agent can utilize the following, or an alternate, decision algorithm
20 upon receiving a telemetry heartbeat or upon a timer pop at a configured interval The arbitration can include a down state, an up state and a partial (1/2) up state.
|002i| hi one case.
Figure imgf000005_0001
25 where
* DOWN State: No telemetry heartbeat has been received in the last « seconds
* Partial ('•:> } UP State Telemetry heartbeat has been received in the last ;/ seconds, but
Telemetry Reports indicate 1 50% of readers are up. • HP State: Telemetry heartbeat has been received in the last « seconds and Tel emetry Reports indicate > 50O/ό of readers are up.
If Server2 is in DOWN state, then fai lover agent 1 can always try to start RFlD edge server. If Server! is in UP state, then failover agent 1 will attempt to stop RFlD edge server. If Server2 is in 1^ UF state, then fail over agent 1 will perform the following:
• Stop RFID edge server? if Server? is in DOWN state
• Start RFTagAwarel if Server! is in IIP state
• Start or stop RFlD edge server 1 if Server ! is in partially '': UP state
|0022| Ir-C Specs, subscriptions, and workflows can be configured ahead of time. The ALE API need not be used during normal operation (other than the delivery of EC Reports to existing subscriptions). f0023| An Administration console can display both primary and secondary edge server status (future enhancement would display only the active edge server) |0024j One embodiment may be implemented using a conventional general purpose of a specialized digital computer or microprocessors) programmed according to the teachings of the present disclosure, as will be apparent to those skilled in the computer art Appropriate software coding can readily be prepared by skilled programmers based on the teachings of the present discloser, as will be apparent to those skilled in the software art The invention may also be implemented by the preparation of integrated circuits or by interconnecting an appropriate network of conventional component circuits, as will be readily apparent to those skilled in the art,
|0025| One embodiment includes a computer program product which is a storage medium (media) having instructions stored thereon/in which can be used to program a computer to perform any of the features present herein. The storage medium can include, but is not limited to, any type of disk including floppy disks, optical discs, DYD, CD-ROMs, micro drive, and magneto-optical disks, ROKIs, RAKIs, EPROMs, EEPROMs, DRAMs, Hash memory of media or device suitable for storing instaictions and/or data stored on any one of the computer readable medium (media), the present invention can include software for controlling both the hardware of the general purpose/specialized computer or microprocessor, and for enabling the computer or microprocessor to interact with a human user or other mechanism utilizing the results of the present invention. Such software may include, but is not limited to, device drivers, operating systems, execution environments/containers, and user applications.
4 |0026| Embodiments of the present invention can include providing code for implementing processes of the present invention. The providing can include providing code to a user in any manner. For example, the providing can include transmitting digital signals containing the code to a user; providing the code on a physical media to a user, or any other 5 method of making the code available.
|0027| Embodiments of the present invention can include a computer implemented method for transmitting code which can be executed at a computer to perform any of the processes of embodiments of the present invention. The transmitting can include transfer through any portion of a network, such as the Internet; through wires, the atmosphere or id space; or any other type of transmission. The transmitting can include initiating a transmission of code; or causing the code to pass into any region or country from another region or country. For example, transmitting includes causing the transfer of code through a portion of a network as a result of previously addressing and sending data including the code to a user. A transmission to a user can include any transmission received by the user in any
S 5 region or country, regardless of the location from which the transmission is sent.
|0028| ϊϊmbodiments of the present invention can include a signal containing code which can be executed at a computer to perform any of the processes of embodiments of the present invention.. The signal can be transmitted through a network, such as the Internet; through wires, the atmosphere or space; or any other type of transmission. The entire signal
20 need not be in transit at the same time. The signal can extend in time over the period of its transfer. The signal is not to be considered as a snapshot of what is currently in transit. f0029| The forgoing description of preferred embodiments of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and
25 variations will be apparent to one of ordinary skill in the relevant arts For example, steps preformed in the embodiments of the invention disclosed can be performed in alternate orders, certain steps can be omitted, and additional steps can be added. The embodiments where chosen and described in order to best explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for
30 various embodiments and with various modifications that are suited to the particular used contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

CLAIMSWhat is claimed is:
1. A system comprising: a first RFID edge server adapted to interact with a RFlD fag reader; and
5 a second RFID edge server adapted to interact with the RFiD tag reader, wherein the first and second RFID edge server arbitrate which of the first and second RFiD edge servers wiH be active,
2. The system of claim 1, wherein the first RFlD edge server is associated with a failover id agent that receives heartbeats from the second RFID edge server.
3. The system of claim I , an automatic failover of the RFlD edge servers occurs between the first and second RFlD edge servers.
i 5 4. The system of claim 3, wherei n reader connects ons are reset during fail over.
5. The system of claim 3, wherein the arbitration includes a down state, an up state and a partially up state.
20 6. The system of claim 5, wherein a RFΪD server in the up state has priority over an RFiD server in the down state.
7. 'The system of claim 5, wherein a RFID server in the up state has priority over an RFlD server in the partially up state,
25
8. The system of claim 5, wherein a RFlD server in the partially up state will switch control if the other server is in the partially up state.
ζ>. The system of claim 5, wherein upon start up the first and second RFlD edge server 30 race to get RFlD readers, then arbitrate who will be connected to all of the RFlD readers.
10, A system comprising; a first RFID edge server adapted to interact with a RFiD tag reader; and a second RFID edge server adapted to interact with the RFf D tag reader, wherein the first and second RFID edge server arbitrate which of the first and second RFlD edge servers will be active; wherein upon start up the first and second RFID edge server race to get RFlD readers, then arbitrate who will be connected to ali of the RFID readers.
1 1. The system of claim 10, wherein the first RFID edge server is associated with a fai lover agent that receives heartbeats from the second RFlD edge server
12. The system of claim 10, an automatic failover of the RFID edge servers occurs between the first and second RFlD edge servers.
13 The system of claim 12. wherein reader connections are reset during fail over.
14. The system of claim 12. wherein the arbitration includes a down state, an up state and a partially up state.
15. The system of claim 14, wherein a RFID server in the υp state has priority over an RFlD server in the down state.
16. The system of claim 14, wherein a RFlD server in the up state has priority over an RFlD server in the partially up state.
17. The system of claim 14, wherein a RFf D server in the partially up state will switch control if the other server is in the partially up state.
18. A computer readable medium containing code to: receive heartbeats from first and second RFID edge servers, and arbitrate which of the first and second RFlD edge servers will be active; wherein upon start up the first and second RFlD edge server race to get RFlD readers, then arbitrate who will be connected to all of the RFID readers.
PCT/US2007/070532 2006-06-09 2007-06-06 Edge server failover Ceased WO2007146708A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US81239706P 2006-06-09 2006-06-09
US81246006P 2006-06-09 2006-06-09
US60/812,397 2006-06-09
US60/812,460 2006-06-09
US82992106P 2006-10-18 2006-10-18
US60/829,921 2006-10-18
US11/756,000 2007-05-31
US11/756,000 US7528697B2 (en) 2006-06-09 2007-05-31 Edge server failover

Publications (2)

Publication Number Publication Date
WO2007146708A2 true WO2007146708A2 (en) 2007-12-21
WO2007146708A3 WO2007146708A3 (en) 2009-01-08

Family

ID=38832674

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/070532 Ceased WO2007146708A2 (en) 2006-06-09 2007-06-06 Edge server failover

Country Status (2)

Country Link
US (1) US7528697B2 (en)
WO (1) WO2007146708A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094983A1 (en) * 2009-02-23 2010-08-26 Traak Systems Limited Event processing apparatus and methods
US20150019900A1 (en) * 2013-07-11 2015-01-15 International Business Machines Corporation Tolerating failures using concurrency in a cluster

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008098149A2 (en) * 2007-02-07 2008-08-14 Larotec Ltd. Failover enabled telemetry systems
CN101729909B (en) * 2008-10-23 2012-11-21 华为技术有限公司 Streaming media business processing method, device and system
US9471877B1 (en) * 2015-12-10 2016-10-18 International Business Machines Corporation Health checking a question answering cognitive computing system built on a baseline of ground truth virtual checksum
US10585784B2 (en) 2015-12-10 2020-03-10 International Business Machines Corporation Regression testing question answering cognitive computing systems by applying ground truth virtual checksum techniques
US11343328B2 (en) * 2020-09-14 2022-05-24 Vmware, Inc. Failover prevention in a high availability system during traffic congestion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5892441A (en) 1996-06-26 1999-04-06 Par Government Systems Corporation Sensing with active electronic tags
US7035877B2 (en) 2001-12-28 2006-04-25 Kimberly-Clark Worldwide, Inc. Quality management and intelligent manufacturing with labels and smart tags in event-based product manufacturing
JP4525074B2 (en) 2003-12-24 2010-08-18 日本電気株式会社 Product identification information management system
JP2005301442A (en) * 2004-04-07 2005-10-27 Hitachi Ltd Storage device
US7466232B2 (en) 2004-05-05 2008-12-16 Trenstar Tracking Solutions, Inc. Radio frequency identification asset management system and method
US7422152B2 (en) * 2004-05-13 2008-09-09 Cisco Technology, Inc. Methods and devices for providing scalable RFID networks
US7512830B2 (en) 2004-05-14 2009-03-31 International Business Machines Corporation Management module failover across multiple blade center chassis
US7161489B2 (en) 2004-09-09 2007-01-09 The Gillette Company RFID system performance monitoring
US7481368B2 (en) 2004-12-14 2009-01-27 Siemens Corporate Research, Inc. Systems, devices, and methods for managing RFID data
US7205897B2 (en) 2005-03-01 2007-04-17 Sap Aktiengesellschaft Product flow based auto-ID infrastructure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094983A1 (en) * 2009-02-23 2010-08-26 Traak Systems Limited Event processing apparatus and methods
US20150019900A1 (en) * 2013-07-11 2015-01-15 International Business Machines Corporation Tolerating failures using concurrency in a cluster
US20150019901A1 (en) * 2013-07-11 2015-01-15 International Business Machines Corporation Tolerating failures using concurrency in a cluster
US9176834B2 (en) * 2013-07-11 2015-11-03 Globalfoundries U.S. 2 Llc Tolerating failures using concurrency in a cluster
US9176833B2 (en) * 2013-07-11 2015-11-03 Globalfoundries U.S. 2 Llc Tolerating failures using concurrency in a cluster

Also Published As

Publication number Publication date
WO2007146708A3 (en) 2009-01-08
US20070296550A1 (en) 2007-12-27
US7528697B2 (en) 2009-05-05

Similar Documents

Publication Publication Date Title
US7528697B2 (en) Edge server failover
EP1437658B1 (en) Coordinating persistent status information with multiple file servers
EP0950955B1 (en) Method and apparatus for correct and complete transactions in a fault tolerant distributed database system
US7194652B2 (en) High availability synchronization architecture
US7076689B2 (en) Use of unique XID range among multiple control processors
US7284236B2 (en) Mechanism to change firmware in a high availability single processor system
US20070180307A1 (en) Method & system for resynchronizing data between a primary and mirror data storage system
JP4976661B2 (en) CHEAPAXOS
US7188237B2 (en) Reboot manager usable to change firmware in a high availability single processor system
US20130138737A1 (en) Managing a Message Subscription in a Publish/Subscribe Messaging System
US8051321B2 (en) Cluster system and node switching method
US20110173495A1 (en) Method and System for Reliable Intersystem Message Notification
US7065673B2 (en) Staged startup after failover or reboot
GB2402769A (en) Maintaining resource integrity without a unified transaction manager in a software environment
GB2277178A (en) Electronic dealing system.
CN108958984A (en) Dual-active based on CEPH synchronizes online hot spare method
EP0175170B1 (en) Off-line notification in communication networks
JPH0341522A (en) Message missing detecting and processing system
JP3190880B2 (en) Standby system, standby method, and recording medium
CN112035071B (en) Disk data reading method, device, computer equipment and storage medium
JPH0879246A (en) Distributed communication system and failure recovery method thereof
JP3284823B2 (en) Data communication device
CN103618700A (en) Method for determining leader server in server system and server system
US20020124204A1 (en) Guarantee of context synchronization in a system configured with control redundancy
CN108599903A (en) Single board starting control method and device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07798183

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07798183

Country of ref document: EP

Kind code of ref document: A2