Restoring user states in dynamic computing environments

• US 20080155308A1
• Filed: 10/27/2006
• Published: 06/26/2008
• Est. Priority Date: 10/27/2006
• Status: Active Grant

• Current Assignee: Workday Incorporated
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Leech, Phillip A., Baker, Dennis, McDonough, Timothy N.
• Granted Patent: US 7,861,108 B2
• Time in Patent Office: Days
• US Class Current: 714/4
• CPC Class Codes: G06F 2209/5016 Session
• CPC Class Codes: G06F 2209/503 Resource availability
• CPC Class Codes: G06F 9/505 considering the load
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1027 Persistence of sessions during load balancing
• CPC Class Codes: H04L 67/1029 using data related to the state of servers by a load balancer
• CPC Class Codes: H04L 67/142 Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70

Abstract

In some embodiments, a computer network comprises a computing engine comprising a plurality of compute nodes and a load balancer coupled to the computing engine and coupled to a processor and a memory module, wherein the memory module comprises logic instructions which, when executed by the processor, configure the processor to receive, in the load balancer, a connection request from a first client computing device and a corresponding first persistence identifier for computing services provided by a first compute node managed by the load balancer, restore, on the first compute node, a stored computing session when the first persistence identifier is associated with the stored computing session, initiate, on the first compute node, a generic computing session when the first persistence identifier is not associated with any stored computing session, and assign the connection request from the first client computing device to the first compute node.

Claims

1. A computer network, comprising:

a computing engine comprising a plurality of compute nodes; and

a load balancer coupled to the computing engine and coupled to a processor and a memory module, wherein the memory module comprises logic instructions which, when executed by the processor, configure the processor to;

receive, in the load balancer, a connection request from a first client computing device and a corresponding first persistence identifier for computing services provided by a first compute node managed by the load balancer;

restore, on the first compute node, a stored computing session when the first persistence identifier is associated with the stored computing session;

initiate, on the first compute node, a generic computing session when the first persistence identifier is not associated with any stored computing session; and

assign the connection request from the first client computing device to the first compute node.

2. The computer network of claim 1, wherein the memory module further comprises logic instructions which, when executed by the processor, configure the processor to associate in memory the persistence identifier with the first compute node.

3. The computer network of claim 1, wherein the memory module further comprises logic instructions which, when executed by the processor, configure the processor to:

receive a connection disable request from the first compute node, wherein the connection disable request identifies the first compute node; and

store a state change associated with the connection in a memory location.

4. The computer network of claim 1, wherein the memory module further comprises logic instructions which, when executed by the processor, configure the processor to:

detecting a disabled connection associated with the first compute node; and

store a state change associated with the connection in a memory location.

5. The computer network of claim 3, wherein the memory module further comprises logic instructions which, when executed by the processor, configure the processor to transmit an instruction set to the first compute node.

6. The computer network of claim 5, wherein the memory module further comprises logic instructions which, when executed by the processor, configure the processor to set the state of the compute node status as available.

7. A method, comprising:

receiving, in a load balancer, a connection request from a first client computing device and a first persistence identifier for computing services provided by a first compute node managed by the load balancer;

restoring, on the first compute node, a stored computing session when the first persistence identifier is associated with the stored computing session;

initiating, on the first compute node, a generic computing session when the first persistence identifier is not associated with any stored computing session; and

assigning the connection request from the first client computing device to the first compute node.

8. The method of claim 7, further comprising associating in memory the persistence identifier with the first compute node.

9. The method of claim 7, further comprising:

receiving a connection disable request from the first compute node, wherein the connection disable request identifies the first compute node; and

storing a state change associated with the connection in a memory location.

10. The method of claim 7, further comprising:

detecting a disabled connection associated with the first compute node; and

storing a state change associated with the connection in a memory location.

11. The method of claim 8, further comprising transmitting an instruction set to the first compute node.

12. The method of claim 11, further comprising setting the state of the compute node status as available.

13. The method of claim 9, wherein, in response to the instruction set, the compute node saves session information in a memory location.

14. A computer-readable medium storing a computer program product comprising logic instructions which, when executed on a processor, configure the processor to:

receive, in the load balancer, a connection request from a first client computing device and a first persistence identifier for computing services provided by a first compute node managed by the load balancer;

restore, on the first compute node, a stored computing session when the first persistence identifier is associated with the stored computing session;

initiate, on the first compute node, a generic computing session when the first persistence identifier is not associated with any stored computing session; and

assign the connection request from the first client computing device to the first compute node.

15. The computer-readable medium of claim 14, further comprising logic instructions which, when executed by the processor, configure the processor to associate in memory the persistence identifier with the first compute node.

16. The computer-readable medium of claim 14, further comprising logic instructions which, when executed by the processor, configure the processor to:

receive a connection disable request from the first compute node, wherein the connection disable request identifies the first compute node; and

store a state change associated with the connection in a memory location.

17. The computer-readable medium of claim 14, further comprising logic instructions which, when executed by the processor, when executed by the processor, configure the processor to:

detect a disabled connection wherein the connection was associated with the first compute node; and

store a state change associated with the connection in a memory location.

18. The computer-readable medium of claim 15, further comprising logic instructions which, when executed by the processor, when executed by the processor, configure the processor to transmit an instruction set to the first compute node.

19. The computer-readable medium of claim 18, further comprising logic instructions which, when executed by the processor, when executed by the processor, configure the processor to set the state of the compute node status as available.