Understanding Node Architecture is one of the most important fundamentals in Web3 development.
Without nodes, there is no blockchain.
But not every node type works the same.
Here’s the shortest possible breakdown 👇
🟩 Full Node
Stores complete blockchain history
Verifies all transactions independently
Most secure
Think of it as a “full blockchain copy”
🟨 Light Node
Stores only essential headers
Fetches remaining data from full nodes
Fast + lightweight
Perfect for wallets & mobile devices
🟦 RPC Node
Gateway for dApps to interact with blockchain
Used for sending transactions, reading/writing state
Provided by Infura, Alchemy, QuickNode
This is what MetaMask connects to
🧠 TL;DR:
Full Node = Security
Light Node = Efficiency
RPC Node = Connectivity
All three together make blockchain WORK.
🎥 Full Video (Explained with visuals):
👉 [YouTube Link]
If you're building in Web3 — nodes are not optional knowledge,
they’re core infrastructure.
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