METHODS FOR DETECTION OF CONTENT SERVERS AND CACHING POPULAR CONTENT THEREIN

• US 20120047224A1
• Filed: 01/14/2011
• Published: 02/23/2012
• Est. Priority Date: 08/22/2010
• Status: Active Grant

• Current Assignee: Qwilt, Inc.
• Original Assignee: Qwilt, Inc.
• Inventors: SHEMESH, Oren, Gressel, Yoav
• Granted Patent: US 9,774,670 B2
• Time in Patent Office: Days
• US Class Current: 709/217
• 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 67/568 Storing data temporarily at an intermediate stage, e.g. caching

Abstract

A method for identification of popular content provided over a first portion of a network to a second portion of a network in the form of packets containing, the method comprises identifying a source of content in the first portion of a network. Deep-packet-inspection (DPI) is performed to determine if content in each packet related to the content is to be stored in a storage that is in a path between the content source and at least a user node in the second portion of the network. The content is stored. A request is received from the user node for a requested content. It is determined if the requested content or portions of the requested content is in the storage. if the requested content or portions of the requested content is missing in the storage, a request is sent to the content source for the requested content or missing portions of the requested content.

Claims

1. A method for identification of popular content provided over a first portion of a network to a second portion of a network in the form of packets containing, the method comprising:

identifying a source of content in the first portion of a network;

performing deep-packet-inspection (DPI) to determine if content in each packet related to the content is to be stored in a storage that is in a path between the content source and at least a user node in the second portion of the network;

storing the content;

receiving a request from the user node for a requested content;

determining if the requested content or portions of the requested content is in the storage;

sending a request to the content source for the requested content or missing portions of the requested content, if the requested content or portions of the requested content is missing in the storage.

2. The method of claim 1, wherein the content is stored in the storage based on at least popularity of the content.

3. The method of claim 1, further comprising determination of the at least a content source as a source from which content is to be saved in the storage.

4. The method of claim 2, wherein the determination of the at least a content source is based on the popularity of access to the content in the at least a content source.

5. The method of claim 1, wherein the DPI is performed on a predefined portion of packets flows from packet traffic on the first portion of the network.

6. The method of claim 5, wherein the predefined portion is determined by using a hash function that accepts as an input source, addresses and destination addresses of the packet flows.

7. The method of claim 6, wherein the hash function further accepts as an input source ports and destination ports of packet flows.

8. The method of claim 5, wherein upon determination that a content source of the at least a content source contains content of interest than at least inspecting all packets of such content source.

9. The method of claim 1, wherein the content is video content.

10. A method for delivering popular content responsive of a request by at least a user node from a storage located on a network path between the at least a user node in a second portion of the network and at least a content source in a first portion of the network, the method comprising:

performing deep-packet-inspection (DPI) of packets containing content delivered over the network path and storing in a storage, content determined to be popular content.

11. The method of claim 10, wherein the content is video content.

12. The method of claim 10, wherein a source of the at least a content source providing content determined to be popular content is identified as a content source for which all packets are inspected for popular content.

13. A method comprising:

receiving at least a parameter regarding data type of a content;

selecting data packets for inspection from a plurality of data packets transferring over a first portion of a network;

performing deep-packet-inspection (DPI) on the selected data packets to determine based on the at least parameter if the data packets contain content of interest;

increasing an identification counter respective of the data packets that contain content of interest;

associating a count of the identification counter with a content source;

performing a DPI on each packet of the plurality of data packets that comes from an indentified source; and

storing content of the inspected each packet if the inspection determined that the content was a content of interest.

14. The method of claim 13, wherein the selecting data packets for inspection comprises:

selecting one out of a predefined portion of packets of packet flows from the traffic on a network.

15. The method of claim 14, wherein determining the predefined portion comprises:

using a hash function that accepts as an input the source address and destination address of packets.

16. The method of claim 13, wherein a source of content is considered to be identified upon an identification count exceeding a predetermined threshold value.

17. The method of claim 13, further comprises:

decreasing the value of the identification counter if the count did not increase for a predefined period of time.

18. The method of claim 13, wherein the content is video.

19. The method of claim 13, wherein storing content occurs after inspection of the content of a received data packet from the second network by the DPI unit.