The process of copying and maintaining data across multiple nodes, servers, or locations in distributed systems to ensure consistency, availability, and fault tolerance, using consensus algorithms like Paxos, Raft, and Byzantine Fault Tolerant protocols to coordinate state across decentralised networks.
Semantic Classification
Content
Technical Details
- Core Consensus Algorithms:
- Paxos: Ensures single value chosen even with simultaneous proposals
- Raft: Simplified leader election, log replication, and safety
- PBFT: Practical Byzantine Fault Tolerance for state machine replication
- Blockchain Applications:
- Bitcoin: Proof of Work consensus
- Ethereum: Proof of Stake consensus
- Distributed ledger transaction ordering and validation
- 2024 Research:
- “Bedrock of Byzantine Fault Tolerance” (NSDI 2024)
- “SpotLess: Concurrent Rotational Consensus” (ICDE 2024)
- Edge-cloud and blockchain system applications
- Key Properties: Consistency across distributed nodes, reliable synchronized replication, fault tolerance in cloud computing
Applications
- Blockchain transaction synchronization
- Distributed database consistency
- Cloud storage redundancy
- Metaverse state management
- Edge computing data sync