Data replication in Kademlia

[mtbitcr]

How are things going with adding data replication in Kademlia DHT? Is there anything planned for the near future?

[guillaumemichel]

You can read about Kademlia replication in the specs.

Currently, by default all data written to the DHT is replicated on 20 peers. Are you referring to something else?

[mtbitcr]

Thank you for your reply.
I have something else in mind. Probably the best analogy would be torrent. I would like to store files on multiple nodes and if one node goes offline, automatically copy the file to the new node.

[guillaumemichel]

If you use the PUT_VALUE operation (see specs), the value you write will be replicated to 20 peers by default. If you want the value stored to persist over time, the node that advertised it in the first place needs to republish it periodically, so that even if nodes go offline, the value is always stored on the closest peers and can be discovered by others.

If you want a system where nodes leaving the network would allocate their values to another node, or the DHT servers reallocating values by themselves, you would have to implement it yourself

[mtbitcr]

Thanks, @guillaumemichel !