Replicating Dropbox Based on RAFT Consensus Algorithm
DISTRIBUTED SYSTEMSGOLANGRPC
What Problem Does RAFT Solve?
In distributed systems, achieving consensus among multiple nodes is a fundamental challenge. RAFT is a consensus algorithm designed to be understandable while providing the same guarantees as Paxos.
Key concepts:
- Leader Election: Nodes elect a leader to coordinate operations
- Log Replication: The leader replicates its log to followers
- Quorum: A majority of nodes must agree for operations to commit
Dropbox Implementation
Our implementation creates a file synchronization system that:
- Maintains consistency across multiple servers
- Handles server failures gracefully
- Supports concurrent client operations
gRPC Integration
We used gRPC for efficient communication between nodes, leveraging:
- Protocol Buffers for serialization
- Bidirectional streaming for real-time sync
- Built-in load balancing support