Overlay Networks
Chord-based overlay network implementation with TCP and Protobuf. Provides distributed hash table functionality for peer-to-peer systems with efficient routing and lookup. Includes node joining, leaving, and failure handling mechanisms.
Language
Go
Protocol
TCP + Protobuf
Pattern
Chord DHT
Tech Stack
Technologies Used
Go
Docker
Linux
Git
GitHub
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Key Features
Distributed Hash Table
Structured P2P ring with finger tables for efficient O(log N) routing and key lookup across the network.
Node Discovery
Registry-based and peer-to-peer discovery. Nodes register and deregister via persistent TCP connections.
Fault Tolerance
Auto-reconnect on failure with persistent TCP connections for peers in finger table ensuring network stability.
Visual Preview
Screenshots
Deep Dive
Project Case Study
Technical details and challenges
The Challenge
Distributed hash tables need efficient routing, fault tolerance, and scalability. Chord provides O(log N) lookup complexity but requires careful implementation. The challenge was building a complete Chord overlay network in Go with proper finger table management, node joining/leaving, data replication, and automatic recovery from node failures.
The Solution
Implemented full Chord protocol using Go with TCP connections for peer communication. Nodes maintain finger tables for efficient routing and successor lists for fault tolerance. The registry enables node discovery while peer-to-peer connections handle data operations. Implemented consistent hashing for data distribution and automatic stabilization to maintain network integrity during churn.
Technical Deep Dive
Go's goroutines handle concurrent operations and network communication. SHA-1 hashing provides consistent node and key placement in the ring. Finger tables enable O(log N) lookup performance. Persistent TCP connections maintain peer relationships. Stabilization protocol runs periodically to update finger tables and handle topology changes. The implementation demonstrates practical distributed systems concepts in a working peer-to-peer network.
Results & Impact
Successfully implemented a working Chord DHT with proper routing, fault tolerance, and scalability. The network handled node joins, leaves, and failures gracefully. Performance benchmarks confirmed O(log N) lookup complexity. The project demonstrated deep understanding of distributed systems algorithms and practical Go networking programming.