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Transaction replication system and method for supporting replicated transaction-based services    
United States Patent5956489   
Link to this pagehttp://www.wikipatents.com/5956489.html
Inventor(s)San Andres; Ramon J. (Berkeley, CA); Choquier; Philippe (Paris, FR); Greenberg; Richard G. (Redmond, WA); Peyroux; Jean-Francois (Issaquah, WA)
AbstractA generic transaction replication service receives update transactions from individual application servers, and forwards the update transactions for processing to all application servers that run the same service application, thereby enabling each application server to maintain a replicated copy of service content data. Upon receiving an update transaction, the application servers perform the specified update, and asynchronously report back to the transaction replication service on the "success" or "failure" of the transaction. When inconsistent transaction results are reported by different application servers, the transaction replication service uses a voting scheme to decide which application servers are to be deemed "consistent," and takes inconsistent application servers off-line for maintenance. Each update transaction replicated by the transaction replication service is stored in a transaction log. When a new application server is brought on-line, previously-dispatched update transactions stored in the transaction log are dispatched in sequence to the new server to bring the new server's content data up-to-date.
   














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Drawing from US Patent 5956489
Transaction replication system and method for supporting replicated transaction-based services - US Patent 5956489 Drawing
Transaction replication system and method for supporting replicated transaction-based services
Inventor     San Andres; Ramon J. (Berkeley, CA); Choquier; Philippe (Paris, FR); Greenberg; Richard G. (Redmond, WA); Peyroux; Jean-Francois (Issaquah, WA)
Owner/Assignee     Microsoft Corporation (Redmond, WA)
Patent assignment
All assignments
Publication Date     September 21, 1999
Application Number     08/585,679
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     January 16, 1996
US Classification     709/221
Int'l Classification     G06F 013/00 182.08 182.18 200.35 200.33 200.47 200.49 676 200.59 200.3 200.31 200.51
Examiner     Meky; Moustafa M.
Assistant Examiner    
Attorney/Law Firm     Leydig, Voit & Mayer, Ltd.
Address
Parent Case     RELATED APPLICATION This is a continuation of U.S. Appl. Ser. No. 08/485,493, filed Jun. 7, 1995, of the same title, now abandoned.
Priority Data    
USPTO Field of Search     395/200.01 395/200.02 395/200.03 395/200.05 395/200.09 395/200.15 395/200.19 395/608 395/610 395/617 395/670 395/182.02
Patent Tags     transaction replication supporting replicated transaction-based services
   
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Choquier

Jun,1998
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Hemphill

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Market Size
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$5B - $10B
$2B - $5B
$500M - $2B
$100M - $500M
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0%   25%