System and method for delivering dynamic content

• US 20020065899A1
• Filed: 11/30/2001
• Published: 05/30/2002
• Est. Priority Date: 11/30/2000
• Status: Abandoned Application

• Current Assignee: Appfluent Technology Inc (Qlik Technologies)
• Original Assignee: Appfluent Technology Inc (Qlik Technologies)
• Inventors: Smith, Erik Richard, Perincherry, Vijayakumar, Coram, Michael Thomas, Conley, Paul Alan
• Application Number:
  US09/997,237
• Publication Number:
  US 20020065899A1
• Time in Patent Office: Days
• US Class Current: 709/214
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: G06F 16/972 Access to data in other repository systems, e.g. legacy data or dynamic Web page generation
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/10015 Access to distributed or replicated servers, e.g. using brokers
• CPC Class Codes: H04L 67/1021 based on client or server locations
• 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 67/288 Distributed intermediate devices, i.e. intermediate devices for interaction with other intermediate devices on the same level
• CPC Class Codes: H04L 67/561 Adding application-functional data or data for application control, e.g. adding metadata
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 67/5682 Policies or rules for updating, deleting or replacing the stored data
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

The present invention provides for a system and method for delivering dynamic content to a client coupled to a network, wherein the client sends a request for the dynamic content to an origin site. The origin site is coupled to the network and also has access to a database. According to the present invention, a plurality of caches are coupled to the network, wherein each cache includes replicated data from the database and application logic to generate the dynamic content using the replicated data. A router redirects the client from the origin site to a cache selected from the plurality of caches, wherein the selected cache provides the dynamic content to the client.

Claims

1. A system for delivering dynamic content to a client coupled to a network, wherein the client sends a request for the dynamic content to an origin site coupled to the network, and wherein the origin site accesses a database, the system comprising:

a plurality of caches coupled to the network, each including;

data replicated from the database, and

application logic to generate the dynamic content using said data; and

a router to route the request from the origin site to a cache selected from said plurality of caches.

2. The system of claim 1, wherein the origin site includes an application server to deliver said application logic to said plurality of caches via the network.

3. The system of claim 2, wherein said application logic comprises a servlet program and the application server interacts with said servlet program according to a Remote Method Invocation (RMI) protocol.

4. The system of claim 2, wherein communications between said plurality of caches, the database, and the application server are directed through said router, and said router is configured to perform protocol translations.

5. The system of claim 4, wherein said router is further configured to provide security for said communications.

6. The system of claim 4, wherein said router is further configured to provide compression for said communications.

7. The system of claim 4, wherein said router is further configured to provide delta encoding for updating said application logic.

8. The system of claim 1, wherein said application logic generates the dynamic content based at least in part on information provided by the client.

9. The system of claim 1, wherein the client comprises an individual end user.

10. The system of claim 1, wherein the client comprises an automated computer program.

11. The system of claim 1, wherein said plurality of caches are each configured to operate in a plurality of execution environments.

12. The system of claim 1, wherein said plurality of caches each include a main memory database (MMDB) to store said data.

13. The system of claim 12, wherein said plurality of caches each further includes a secondary cache.

14. The system of claim 1, wherein said data is transferred from the database to said plurality of caches via a satellite communications network.

15. The system of claim 1, wherein the database comprises a database management system (DBMS) and one or more database servers.

16. The system of claim 1, wherein said router comprises a Global Server Load Balancing (GSLB) router.

17. The system of claim 1, wherein said application logic of said selected cache generates the dynamic content in response to the request.

18. The system of claim 1, wherein said selected cache is configured to determine whether the request is transactional or informational, and if transactional, to proxy the request to the origin site, and if informational, to process the request using said application logic.

19. The system of claim 1, wherein said application logic issues a database request when processing the request, and wherein said selected edge cache is configured to determine whether said database request is transactional or informational, and if transactional, to proxy said database request to the origin site, and if informational, to process said database request using said application logic.

20. An edge cache for delivering dynamic content to a client coupled to a network, wherein the client sends a request for the dynamic content to an origin site coupled to the network, and wherein the origin site includes a database and an application server, said edge cache comprising:

a data cache to store data, wherein said data is replicated from the database; and

a logic cache to store application logic received from the application server, wherein said application logic generates the dynamic content in response to receiving the request.

21. A method for delivering dynamic content to a client coupled to a network, wherein the client sends a request for the dynamic content to an origin site coupled to the network, and wherein the origin site accesses a database, said method comprising:

selecting a cache from a plurality of caches coupled to the network;

routing the request to said cache;

executing application logic at said cache to generate the dynamic content, wherein said application logic accesses data stored in said cache, and wherein said data is replicated from the database; and

sending the dynamic content to the client in response to the request.

22. The method of claim 21, wherein the origin site includes an application server, and wherein said method further comprises distributing said application logic from the application server to said cache.

23. The method of claim 21, wherein said executing comprises determining whether the request is transactional or informational, and if transactional, forwarding the request to the origin site, and if informational, processing the request at said cache.

24. The method of claim 21, wherein said executing comprises:

issuing a database request; and

determining whether said database request is transactional or informational, and if transactional, forwarding said database request to the origin site, and if informational, processing said database request at said cache.

25. The method of claim 21, wherein said executing comprises:

issuing a database request; and

determining whether said database request is transactional or informational, and if informational, processing said database request at said cache, and if transactional;

forwarding said database request to the origin site, and

suspending operation until said data has been updated to reflect said database request.

26. The method of claim 21, wherein said executing comprises:

issuing a database request; and

determining whether said database request is transactional or informational, and if informational, processing said database request at said cache, and if transactional;

forwarding said database request to the origin site, and

forwarding subsequent database requests to the origin site until said data has been updated to reflect said database request.