Hot deployment of software

1. A method of software deployment, comprising:

configuring a first service processing engine and a second service processing engine, wherein each of the first and the second service processing engine is configured to perform a service;

setting the first service processing engine into an operation status and the second service processing engine into a wait status, wherein the first service processing engine being in the operation status is configured to receive a service request and determine whether at least a portion of the service request satisfies a service rule from a stored plurality of service rules and wherein the second service processing engine being in the wait status is configured to not receive the service request and to scan for a change that is to affect the performance of the service;

detecting the change that is to affect the performance of the service using the second service processing engine being in the wait status, wherein the change includes a modification to the stored plurality of service rules;

updating the second service processing engine in the wait status based at least in part on the detected change; and

setting the updated second service processing engine into the operation status and the first service processing engine into the wait status.

2. The method of claim 1 further comprising:

updating the first service processing engine in the wait status based at least in part on the detected change.

3. The method of claim 1 , wherein setting the updated second service processing engine into the operation status includes sending a disabling instruction to the first service processing engine.

4. The method of claim 1 , wherein the first service processing engine is configured to correspond to a first service rule storage and the second service processing engine is configured to correspond to a second service rule storage.

5. The method of claim 1 , wherein the wait status comprises either updating a processing setting or service rule or detecting a subsequent change that is to affect performance of the service.

6. The method of claim 1 , wherein the change comprises an addition of or a modification of a service rule and/or a modification to a processing setting associated with the second service processing engine.

7. The method of claim 1 , wherein detecting is performed periodically or in real-time.

8. The method of claim 6 , wherein updating comprises modifying a corresponding service rule or a corresponding processing setting associated with the second service processing engine to correspond to the addition of or the modification of the service rule and/or the modification to the processing setting of the second service processing engine.

9. A system for software deployment, comprising:

one or more processors configured to:

execute a first service processing engine and a second service processing engine, wherein each of the first and the second service processing engine is configured to perform a service;

set the first service processing engine into an operation status and the second service processing engine into a wait status, wherein the first service processing engine being in the operation status is configured to receive a service request and determine whether at least a portion of the service request satisfies a service rule from a stored plurality of service rules and wherein the second service processing engine being in the wait status is configured to not receive the service request and to scan for a change that is to affect the performance of the service;

detect the change that is to affect the performance of the service using the second service processing engine being in the wait status, wherein the change includes a modification to the stored plurality of service rules;

update the second service processing engine in the wait status based at least in part on the detected change; and

set the updated second service processing engine into the operation status and the first service processing engine into the wait status; and

a memory coupled to the processor and configured to provide the processor with instructions.

10. The system of claim 9 , the one or more processors further configured to:

update the first service processing engine in the wait status based at least in part on the detected change.

11. The system of claim 9 , wherein to set the updated second service processing engine into the operation status includes to send a disabling instruction to the first service processing engine.

12. The system of claim 9 , wherein the first service processing engine is configured to correspond to a first service rule storage and the second service processing engine is configured to correspond to a second service rule storage.

13. The system of claim 9 , wherein the wait status comprises the one or more processors configured to either update a processing setting or service rule or detect a subsequent change that is to affect performance of the service.

14. The system of claim 9 , wherein the change comprises an addition of or a modification of a service rule and/or a modification to a processing setting associated with the second service processing engine.

15. The system of claim 9 , wherein the one or more processors are configured to detect the change periodically or in real-time.

16. The system of claim 14 , wherein to update comprises to modify a corresponding service rule or a corresponding processing setting associated with the second service processing engine to correspond to the addition of or the modification of the service rule and/or the modification to the processing setting of the second service processing engine.

17. A computer program product for software deployment, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:

executing a first service processing engine and a second service processing engine, wherein each of the first and the second service processing engine is configured to perform a service;

setting the first service processing engine into an operation status and the second service processing engine into a wait status, wherein the first service processing engine being in the operation status is configured to receive a service request and determine whether at least a portion of the service request satisfies a service rule from a stored plurality of service rules and wherein the second service processing engine being in the wait status is configured to not receive the service request and to scan for a change that is to affect the performance of the service;

detecting the change that is to affect the performance of the service using the second service processing engine being in the wait status, wherein the change includes a modification to the stored plurality of service rules;

updating the second service processing engine in the wait status based at least in part on the detected change; and

setting the updated second service processing engine into the operation status and the first service processing engine into the wait status.