Blockchain Quick Reference by Brenn Hill

Blockchain Quick Reference by Brenn Hill

Author:Brenn Hill
Language: eng
Format: epub
Tags: COM062000 - COMPUTERS / Data Modeling and Design, COM083000 - COMPUTERS / Security / Cryptography, COM018000 - COMPUTERS / Data Processing
Publisher: Packt Publishing
Published: 2018-08-08T07:54:42+00:00


It is important to note that a single computer can act as up to all three of these node types on a Fabric blockchain, but this is not necessary. While it is possible for the same computer on a Hyperledger network to both execute transactions and order their sequence, Hyperledger is able to scale more by providing these as distinct services. To illustrate, look at the following diagram (from the Hyperledger documentation):

As you can see, incoming transaction first go to peers, who execute transactions using chaincode/smart contracts and then broadcast successful transactions to the ordering service. Once accepted, the ordering service decides on a final order of transactions, and the resulting transactions sets are re-transmitted to peer nodes, which write the final block on to the chain.



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