Nœud RPC
Passerelle vers la blockchain.
RPC nodes are the primary access point for developers and users. Without them, interacting with a blockchain would require every user to synchronize a full node locally, which is impractical for mobile and web environments. They act as the 'API of the decentralized world'.
graph LR
Center["Nœud RPC"]:::main
Rel_grpc["grpc"]:::related -.-> Center
click Rel_grpc "/terms/grpc"
Rel_virtual_private_cloud_vpc["virtual-private-cloud-vpc"]:::related -.-> Center
click Rel_virtual_private_cloud_vpc "/terms/virtual-private-cloud-vpc"
Rel_rpc_nodes["rpc-nodes"]:::related -.-> Center
click Rel_rpc_nodes "/terms/rpc-nodes"
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🧒 Explique-moi comme si j'avais 5 ans
📞 Think of an RPC node like a telephone operator for a [blockchain](/fr/terms/blockchain). If your [wallet](/fr/terms/wallet) (like [MetaMask](/fr/terms/metamask)) or a website wants to know how many coins you have, it doesn't download the whole history; it just 'calls' the RPC node and asks. The node looks up the answer and tells the app. It's the [bridge](/fr/terms/bridge) that lets regular apps talk to the complex world of the blockchain.
🤓 Expert Deep Dive
RPC nodes serve as the Interface Layer for dApps. Most implementations use the JSON-RPC 2.0 over HTTP or WebSockets. High-quality RPC infrastructure must handle Request Batching, Geth/Nethermind Compatibility, and State Finality Verification. The choice between Public RPCs (rate-limited, higher latency) and Dedicated RPCs (Alchemy, Infura, QuickNode) impact the reliability of real-time event listening. From an architecture perspective, RPCs provide an abstraction over the complex P2P gossip protocols used for node-to-node communication, exposing a structured, request-response API for the application layer.