Method of improving replica server performance and a replica server system

• US 20060020635A1
• Filed: 07/23/2004
• Published: 01/26/2006
• Est. Priority Date: 07/23/2004
• Status: Active Grant

• Current Assignee: Nasdaq Technology AB (Nasdaq, Inc.)
• Original Assignee: OM Technology AB (OM Gruppen AB)
• Inventors: Green, Thomas
• Granted Patent: US 7,321,906 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 11/2089 Redundant storage control functionality
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 11/2097 maintaining the standby controller/processing unit updated initialisation or re-synchronisation thereof G06F11/1658 and subgroups
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

A method of improving replica server performance in a replica server system is described. The method comprises the steps of; transferring input data from a primary replica to a secondary replica upon receiving same; storing said input data on the primary replica; processing said input data in the primary replica after storing said input data, thus creating original output data; sending confirmation data from the secondary replica to the primary replica upon receiving said input data; and sending out said original output data from the primary replica upon receiving said confirmation data from said secondary replica. Replica server system for inter alia performing the method is also enclosed.

Claims

1. Method of improving replica server performance in a replica server system comprising a primary replica being associated with a primary storage for storing information and a primary processing means, and a secondary replica being associated with a secondary storage and a secondary processing means, comprising the steps of:

transferring input data from said primary replica to said secondary replica upon receiving same,

storing said input data on said primary storage,

processing said input data in said primary processing means after storing said input data, thus creating original output data,

sending confirmation data from said secondary replica to said primary replica upon receiving said input data, and

sending out said original output data from said primary replica upon receiving said confirmation data from said secondary replica.

2. Method according to claim 1, wherein said input data is stored on said secondary storage and said input data is processed in said secondary processing means, thus creating replica output data.

3. Method according to claim 2, wherein said storing and processing in said secondary processing means is postponed at least until a next input data is received from said primary replica.

4. Method according to claim 2, wherein information data relating to the processing of input data is sent from said primary replica and said storing and processing in said secondary processing means is postponed until said information data indicate that said input data has been successfully processed by said primary processing means.

5. Replica server system comprising a primary replica having a primary input, a primary output, a primary storage and a primary processor associated with it which is connected to a secondary replica having a secondary input, a secondary output, a secondary storage and a secondary processor associated with it, said primary replica being configured to transfer received input data to said secondary replica, store said input data on said primary storage, process said input data on said primary processor to create original output data and send out said original output data through said primary output after receiving confirmation data from said secondary replica that said input data has been received, and said secondary replica being configured to generate said confirmation data upon receiving said input data on said secondary input.

6. Replica server system according to claim 5, wherein said secondary replica is further configured to store said input data in said secondary storage and process said input data in said secondary processor to create replica output data to said original output data.

7. Replica server system according to claim 6, wherein said secondary replica is further configured to postpone storing said input data in said secondary storage and processing said input data in said secondary processor until a next input data has been received from said primary replica.

8. Replica server system according to claim 6, wherein said primary replica is configured to generate information data indicating which input data is being processed and to transfer said information data to said secondary replica and said secondary replica being configured to postpone storing said input data in said secondary storage and processing said input data in said secondary processor until it has received information data indicating that said input data has been successfully processed by said primary replica.

9. Replica server system comprising

primary replica means;

secondary replica means;

means for communicating internally between said primary replica means and said secondary replica means and externally between said primary replica means and external sources, said means for communicating being configured to transfer input data received by said primary replica means to said secondary replica means;

means for storing said input data in said primary replica means;

means for processing said input data in said primary replica means, thus creating original output data;

means for generating confirmation data in said secondary replica means upon receiving said input data and transferring said confirmation data to said primary replica means via said means for communicating; and

means for outputting said original output data via said means for communicating when said original output data has been created and said confirmation data has been received.

10. Replica server system according to claim 9, wherein said secondary replica means further comprises:

means for storing said input data in said secondary replica means; and

means for processing said input data in said secondary replica means, thus creating replica output data.

11. Replica server system according to claim 10, wherein said secondary replica means comprises means for inhibiting said means for storing said input data in said secondary replica means and said means for processing said input data in said secondary replica means until a next input data is received from said primary replica means.

12. Replica server system according to claim 10, wherein said primary replica means further comprises means for generating information data indicating which input data has been processed by said primary replica means, said information data being transferable to said secondary replica means via said means for communicating, and said secondary replica means comprises means for inhibiting said means for storing said input data in said secondary replica means and said means for processing said input data in said secondary replica means until said secondary replica has received said information data indicating that said means for processing said input data in said primary replica means has processed said input data.