Distributed cache architecture

• US 20060143360A1
• Filed: 12/28/2004
• Published: 06/29/2006
• Est. Priority Date: 12/28/2004
• Status: Active Grant

• Current Assignee: SAP SE
• Original Assignee: SAP AG (SAP SE)
• Inventors: Kilian, Frank, Galchev, Galin, Luik, Oliver, Marwinski, Dirk, Petev, Petio G.
• Granted Patent: US 7,694,065 B2
• Time in Patent Office: Days
• US Class Current: 711/6
• CPC Class Codes: G06F 9/4493 Object persistence

Abstract

Methods for a treatment of cached objects are described. In one embodiment, an object, associated with an object key, is stored in a first local memory cache associated with a first virtual machine within a first computing system. The object is also stored in a serialized format to a database. The object key is serialized after receiving a notification of successful storage of the object in the database. The serialized key is then sent over a network to a second computing system.

Claims

1. A method comprising:

storing an object in a first local memory cache associated with a first virtual machine within a first computing system, the object associated with an object key;

storing the object in a serialized format to a database;

serializing the object key after receiving a notification of successful storage of the object in the database; and

sending the serialized key over a network to a second computing system.

2. The method of claim 1, wherein the placing further comprises copying the object from the local memory cache to a shared memory cache.

3. The method of claim 1, wherein the placing further comprises placing the object in the first local memory with a plug-in.

4. The method of claim 1, wherein the sending further comprises:

de-serializing the object key at the second computing system; and

saving the de-serialized key in a second local memory cache associated with a second virtual machine within the second computing system.

5. The method of claim 4, wherein the method further comprises:

retrieving the object from the database by the second computing system using the de-serialized key; and

de-serializing the object.

6. A computing system comprising a machine, said computing system also comprising instructions disposed on a computer readable medium, said instructions capable of being executed by said machine to perform a method, said method comprising:

storing an object in a first local memory cache associated with a first virtual machine within a first computing system, the object associated with an object key;

storing the object in a serialized format to a database;

serializing the object key after receiving a notification of successful storage of the object in the database; and

sending the serialized key over a network to a second computing system.

7. The computing system of claim 6, wherein said instructions further cause the machine to perform said method comprising copying the object from the local memory cache to a shared memory cache.

8. The computing system of claim 6, wherein said instructions further cause the machine to perform said method comprising placing the object in the first local memory with a plug-in.

9. The computing system of claim 6, wherein said instructions further cause the machine to perform said method comprising:

de-serializing the object key at the second computing system; and

saving the de-serialized key in a second local memory cache associated with a second virtual machine within the second computing system.

10. The computing system of claim 6, wherein said instructions further cause the machine to perform said method comprising:

retrieving the object from the database by the second computing system using the de-serialized key; and

de-serializing the object.

11. An article of manufacture including program code which, when executed by a machine, causes the machine to perform a method, the method comprising:

storing an object in a first local memory cache associated with a first virtual machine within a first computing system, the object associated with an object key;

storing the object in a serialized format to a database;

serializing the object key after receiving a notification of successful storage of the object in the database; and

sending the serialized key over a network to a second computing system.

12. The article of manufacture as in claim 11, wherein the program code further causes the machine to perform the method of copying the object from the local memory cache to a shared memory cache.

13. The article of manufacture as in claim 11, wherein the program code further causes the machine to perform said method of placing the object in the first local memory with a plug-in.

14. The article of manufacture as in claim 11, wherein the program code further causes the machine to perform said method of:

de-serializing the object key at the second computing system; and

saving the de-serialized key in a second local memory cache associated with a second virtual machine within the second computing system.

15. The article of manufacture as in claim 14, wherein the program code further causes the machine to perform said method of:

retrieving the object from the database by the second computing system using the de-serialized key; and

de-serializing the object.