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A fault-tolerant peer-to-peer replication network
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A fault-tolerant peer-to-peer replication network

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The paper can be read at: http://wooptoo.com/papers/A_Fault_Tolerant_Peer-To-Peer_Replication_Network.pdf

The paper can be read at: http://wooptoo.com/papers/A_Fault_Tolerant_Peer-To-Peer_Replication_Network.pdf

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  • 1. A fault-tolerant peer-to-peer replication network Radu Potop Otto Iovanici
  • 2. Replication network Syncronizes files across computers Data available wherever you go Home Work Remote
  • 3. How do you do it? What we initially wanted to do: C client C S server C C Star topology network
  • 4. How do you do it? But... C ? Bye C ? S ? ? C C What if the server goes down?
  • 5. Peer-to-peer Descentralized Each peer (node) is both client and server Mesh topology (fully connected)
  • 6. Fault tolerant What if a node goes down? The network does not suffer
  • 7. Fault tolerant Nodes can be added and removed Particular to our network: permits any file transfer is secure grants ASAP availability of data
  • 8. Technology SSH secure network public key authentification private / closed network needs initial configuration
  • 9. Technology Unison two-way synchronization 1 2 1,2 1,2 A B A B Sync Result
  • 10. Technology Cron Sync every hour Bash script Reads IP list Runs Unison Sync IP list between nodes
  • 11. How does it all work? 1 2 A B Step 1 C D 3 4 Node A syncs (in order) to B, C and D
  • 12. How does it all work? 1,2,3,4 1,2 A B Step 2 C D 1,2,3 1,2,3,4 Each node syncs to every other node
  • 13. Characteristics ASAP availability of data Consistent data across nodes Some overhead Inneficient for large networks
  • 14. Demonstration
  • 15. Thank you

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