/en/tags/network-architecture/Recent content in Network Architecture on Mi&Bee BlogHugo -- gohugo.ioen蓝宝石的傻话Sun, 15 Mar 2020 00:00:00 +0000/en/posts/network/p2p-core-principles/Sun, 15 Mar 2020 00:00:00 +0000/en/posts/network/p2p-core-principles/<p>Peer-to-Peer (P2P) networking is a decentralized architecture where every node acts as both a provider (Server) and consumer (Client). This architecture is widely used in file distribution (BitTorrent), cryptocurrency (Bitcoin), decentralized storage (IPFS), and many other domains.</p> <h2 id="p2p-vs-client-server-architecture">P2P vs Client-Server Architecture</h2> <p>Before diving into P2P principles, let&rsquo;s understand the fundamental differences through comparison:</p> <table> <thead> <tr> <th>Feature</th> <th>Client-Server</th> <th>P2P Network</th> </tr> </thead> <tbody> <tr> <td>Centralization</td> <td>Highly centralized</td> <td>Decentralized / Hybrid</td> </tr> <tr> <td>Single Point of Failure</td> <td>Exists</td> <td>Does not exist</td> </tr> <tr> <td>Scalability</td> <td>Limited by server</td> <td>Linear with node count</td> </tr> <tr> <td>Bandwidth Cost</td> <td>Borne by server</td> <td>Shared by nodes</td> </tr> <tr> <td>Fault Tolerance</td> <td>Low</td> <td>High</td> </tr> <tr> <td>Lookup Complexity</td> <td>O(1)</td> <td>O(log N)</td> </tr> </tbody> </table> <p>The core advantage of P2P lies in eliminating single points of bottleneck and failure, at the cost of introducing more complex node discovery and data routing mechanisms.</p>