Understanding Full Nodes
A full node refers to a computer or server that downloads and maintains the complete history of a blockchain.
It plays a crucial role in observing and enforcing the blockchain rules.
Full nodes validate transactions within blocks and store the necessary data to keep the blockchain operational. In contrast, light nodes utilize a reduced set of data.
Functioning of Full Nodes
A blockchain network consists of multiple nodes responsible for governing and upholding the rules of the blockchain.
The consensus mechanism employed by most blockchains, such as proof-of-stake or proof-of-work, requires each node to validate new transactions.
Once all nodes validate a transaction, a consensus is reached, and the transaction is appended to the blockchain.
Balancing Data Storage and Accessibility
A full node stores a comprehensive record of all previously validated transactions on the blockchain.
The data requirements for different blockchains vary depending on their size.
Full nodes fulfill a critical role in safeguarding the history of a blockchain.
With this historical record, a blockchain can be completely reconstructed, even in the event of a catastrophic failure.