📖 29. Peer to Peer Paradigm

📖 From Data Communication and Networks • 245 questions available

About 29. Peer to Peer Paradigm

Peer-to-peer networks distribute functionality across participating nodes rather than centralizing it in dedicated servers, leveraging aggregate resources for scalability and resilience. File-sharing systems like BitTorrent split content into pieces exchanged among swarms, reducing origin server load proportionally to popularity, while blockchain networks achieve consensus through decentralized validation, and P2P streaming overlays construct application-layer multicast trees for live content distribution without ISP multicast support.

Challenges include freeriding mitigation through tit-for-tat incentives, NAT traversal via STUN/TURN/ICE, search efficiency through DHTs like Kademlia, and content moderation difficulties inherent in decentralization. Despite declining mainstream file-sharing usage, P2P principles persist in WebRTC data channels, cryptocurrency infrastructure, and federated social networks, demonstrating enduring relevance for censorship resistance, cost reduction, and community-owned alternatives to platform-centric architectures.

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🔄 Last updated: 2026-08-02