Decentralized content fabric

1. A decentralized system for retrieving digital content from an overlay network of nodes, the system comprising:

a memory device; and

one or more processors in communication with the memory device, the one or more processors configured to execute a software stack to provide a first fabric node and a plurality of fabric nodes of an overlay network implemented in an application layer differentiated from an internet protocol layer, the first fabric node situated in a first network domain, the plurality of fabric nodes situated in a second one or more network domains external to the first network domain, the first fabric node configured to:

obtain, from a client, a client request for a content object part, the content object part representing, in the overlay network, a portion of the digital content,

determine, responsive to the client request for the content object part, that the content object part is not stored locally at the first fabric node by at least:

calculating a partition for the content object part, and

determining that the calculated partition does not match one or more node partitions of the first fabric node,

identify a second one or more of the plurality of fabric nodes in communication with the first fabric node as a best match for a target partition using an inter-domain routing tree,

send, responsive to determining that the content object part is not stored locally at the first fabric node, an inter-domain network request for the content object part to the second one or more fabric nodes, each second fabric node having been assigned to store the content object part by at least:

computing an exclusive or (XOR) distance between the calculated partition and a second partition managed by the second fabric node, and

determining that the XOR distance traverses a number of partitions per fabric node in the overlay network, the number of partitions per fabric node in the overlay network being a network-wide parameter,

obtain, from the second one or more fabric nodes, the content object part,

process the content object part with a plurality of further content object parts to produce the digital content, and

provide the digital content to the client.

2. The system of claim 1 , wherein the inter-domain network request is generated using one or more of: a multicast address for the calculated partition, a part identifier (ID) for the content object part, or one or more node identifiers (IDs) of one or more of the plurality of fabric nodes identified based on one or more predicted performance scores for the identified one or more fabric nodes.

3. The system of claim 1 , the first fabric node further configured to send an intra-domain network request for the content object part to a third one or more of the plurality of fabric nodes.

4. The system of claim 1 , the second one or more fabric nodes each storing a respective non-overlapping segment of the content object part.

5. The system of claim 1 , the first fabric node further configured to determine that the content object part is not stored at a plurality of intra-domain nodes situated with the first fabric node in the first network domain.

6. The system of claim 1 , the first fabric node further configured to update the inter-domain routing tree with one or more node IDs of the second one or more fabric nodes for a designated partition.

7. A non-transitory computer-readable medium storing program code to be executed by one or more processors, the program code comprising instructions configured to cause:

providing a first fabric node and a plurality of fabric nodes of an overlay network implemented in an application layer differentiated from an internet protocol layer, the first fabric node situated in a first network domain, the plurality of fabric nodes situated in a second one or more network domains external to the first network domain, the first fabric node configured to:

obtain, from a client, a client request for a content object part, the content object part representing, in the overlay network, a portion of digital content,

determine, responsive to the client request for the content object part, that the content object part is not stored locally at the first fabric node by at least:

calculating a partition for the content object part, and

determining that the calculated partition does not match one or more node partitions of the first fabric node,

identify a second one or more of the plurality of fabric nodes in communication with the first fabric node as a best match for a target partition using an inter-domain routing tree,

send, responsive to determining that the content object part is not stored locally at the first fabric node, an inter-domain network request for the content object part to the second one or more fabric nodes, each second fabric node having been assigned to store the content object part by at least:

computing an exclusive or (XOR) distance between the calculated partition and a second partition managed by the second fabric node, and

determining that the XOR distance traverses a number of partitions per fabric node in the overlay network, the number of partitions per fabric node in the overlay network being a network-wide parameter,

obtain, from the second one or more fabric nodes, the content object part,

process the content object part with a plurality of further content object parts to produce the digital content, and

provide the digital content to the client.

8. The non-transitory computer-readable medium of claim 7 , wherein the inter-domain network request is generated using one or more of: a multicast address for the calculated partition, a part identifier (ID) for the content object part, or one or more node identifiers (IDs) of one or more of the plurality of fabric nodes identified based on one or more predicted performance scores for the identified one or more fabric nodes.

9. The non-transitory computer-readable medium of claim 7 , the first fabric node further configured to send an intra-domain network request for the content object part to a third one or more of the plurality of fabric nodes.

10. The non-transitory computer-readable medium of claim 7 , the second one or more fabric nodes each storing a respective non-overlapping segment of the content object part.

11. The non-transitory computer-readable medium of claim 7 , the first fabric node further configured to determine that the content object part is not stored at a plurality of intra-domain nodes situated with the first fabric node in the first network domain.

12. The non-transitory computer-readable medium of claim 7 , the first fabric node further configured to update the inter-domain routing tree with one or more node IDs of the second one or more fabric nodes for a designated partition.

13. A method comprising:

obtaining, from a client, at a first fabric node of an overlay network implemented in an application layer differentiated from an internet protocol layer, a client request for a content object part, the content object part representing, in the overlay network, a portion of digital content, the first fabric node situated in a first network domain and a plurality of fabric nodes situated in a second one or more network domains external to the first network domain;

determining, responsive to the client request for the content object part, that the content object part is not stored locally at the first fabric node by at least:

calculating a partition for the content object part, and

determining that the calculated partition does not match one or more node partitions of the first fabric node;

identifying a second one or more of the plurality of fabric nodes in communication with the first fabric node as a best match for a target partition using an inter-domain routing tree;

sending, responsive to determining that the content object part is not stored locally at the first fabric node, an inter-domain network request for the content object part to the second one or more fabric nodes, each second fabric node having been assigned to store the content object part by at least:

computing an exclusive or (XOR) distance between the calculated partition and a second partition managed by the second fabric node, and

determining that the XOR distance traverses a number of partitions per fabric node in the overlay network, the number of partitions per fabric node in the overlay network being a network-wide parameter; obtaining, from the second one or more fabric nodes, the content object part;

processing the content object part with a plurality of further content object parts to produce the digital content; and

providing the digital content to the client.

14. The method of claim 13 , wherein the inter-domain network request is generated using one or more of: a multicast address for the calculated partition, a part identifier (ID) for the content object part, or one or more node identifiers (IDs) of one or more of the plurality of fabric nodes identified based on one or more predicted performance scores for the identified one or more fabric nodes.

15. The method of claim 13 , the first fabric node further configured to send an intra-domain network request for the content object part to a third one or more of the plurality of fabric nodes.

16. The method of claim 13 , the second one or more fabric nodes each storing a respective non-overlapping segment of the content object part.

17. The method of claim 13 , further comprising:

determining that the content object part is not stored at a plurality of intra-domain nodes situated with the first fabric node in the first network domain.

18. The method of claim 13 , further comprising:

updating the inter-domain routing tree with one or more node IDs of the second one or more fabric nodes for a designated partition.