Session replication

• US 20070027896A1
• Filed: 07/28/2005
• Published: 02/01/2007
• Est. Priority Date: 07/28/2005
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Stecher, John, Newport, William
• Granted Patent: US 7,668,904 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066

Abstract

Methods, apparatuses, and products are disclosed for session replication that include enqueueing sessions on a replication queue and flushing enqueued sessions, from the replication queue to a replication peer, in dependence upon flushing criteria, for storage on a replication medium. The replication medium may be non-volatile storage in a database or remote random access memory. Flushing may be carried out periodically or in dependence upon replication queue depth. Flushing may include aggregating sessions from the replication queue for transmission to the replication peer.

Claims

1. A computer-implemented method for session replication, the method comprising:

enqueueing sessions on a replication queue; and

flushing enqueued sessions, from the replication queue to a replication peer, in dependence upon flushing criteria, for storage on a replication medium.

2. The method of claim 1 wherein the replication medium is non-volatile storage in a database.

3. The method of claim 1 wherein the replication medium is remote random access memory.

4. The method of claim 1 wherein flushing in dependence upon flushing criteria further comprises flushing periodically.

5. The method of claim 1 wherein flushing in dependence upon flushing criteria further comprises flushing in dependence upon replication queue depth.

6. The method of claim 1 wherein flushing further comprises aggregating sessions from the replication queue for transmission to the replication peer.

7. The method of claim 6 wherein the replication medium is non-volatile storage in a database and aggregating further comprises aggregating the sessions into a single database transaction.

8. The method of claim 6 wherein the replication medium is non-volatile storage in a database and aggregating further comprises batching SQL statements.

9. The method of claim 6 wherein the replication medium is remote random access memory and aggregating further comprises aggregating multiple sessions into a single message.

10. An apparatus for session replication, the apparatus comprising at least one computer processor, at least one computer memory operatively coupled to the computer processor, and computer program instructions disposed within the computer memory capable of:

enqueueing sessions on a replication queue; and

flushing enqueued sessions, from the replication queue to a replication peer, in dependence upon flushing criteria, for storage on a replication medium.

11. The apparatus of claim 10 wherein flushing further comprises aggregating sessions from the replication queue for transmission to the replication peer.

12. The apparatus of claim 11 wherein the replication medium is non-volatile storage in a database and aggregating further comprises aggregating the sessions into a single database transaction.

13. The apparatus of claim 11 wherein the replication medium is non-volatile storage in a database and aggregating further comprises batching SQL statements.

14. The apparatus of claim 11 wherein the replication medium is remote random access memory and aggregating further comprises aggregating multiple sessions into a single message.

15. A computer program product for session replication, the computer program product disposed upon a signal bearing medium, the computer program product comprising computer program instructions for:

enqueueing sessions on a replication queue; and

flushing enqueued sessions, from the replication queue to a replication peer, in dependence upon flushing criteria, for storage on a replication medium.

16. The computer program product of claim 15 wherein the signal bearing medium comprises a recordable medium.

17. The computer program product of claim 15 wherein the signal bearing medium comprises a transmission medium.

18. The computer program product of claim 15 wherein flushing further comprises aggregating sessions from the replication queue for transmission to the replication peer.

19. The computer program product of claim 18 wherein the replication medium is non-volatile storage in a database and aggregating further comprises aggregating the sessions into a single database transaction.

20. The computer program product of claim 18 wherein the replication medium is non-volatile storage in a database and aggregating further comprises batching SQL statements.