Elementary Track 07
🌐
The Internet Without Servers
How does a transaction you send reach thousands of nodes? The P2P network propagates data on its own, without a central server.
What You'll Learn
- → How gossip protocol propagates transactions across the entire P2P network
- → The roles and differences of full nodes, light nodes, and validator nodes
- → How transactions are selected from the mempool based on gas price
🕸️
P2P Architecture
All nodes are equal. Connected without a central server.
📡
Gossip Protocol
A transaction is relayed to neighboring nodes, who relay it further.
🧠
Mempool
Queue for unconfirmed transactions. Miners select by fee priority.
💡 Bitcoin initially shared node addresses via IRC chat rooms. Today it uses DNS seed servers and a built-in node list.