Decentralization is an important feature of blockchain technology and applications
I have read some blockchain application plan books and application cases. Some application schemes are still the previous centralized client + server model, and the ledger is stored centrally on a certain node or certain nodes. Some applications have traces of decentralization, but they are very weak.
Ethereum has a high degree of decentralization, and Hyperledger's decentralization program is not as good as Ethereum. In the Hyperledger network, the group composed of orderer nodes has traces of weak centralization compared to the group composed of peer nodes.
Decentralization is an important basis for testing the essence of blockchain
In the blockchain network, the leaving or leaving of any node or any part of the node will not have a significant impact on the operation of the network. The Ethereum network is very close to this feature. In the Hyperledger network, if the group of orderer nodes leaves the network, the Hyperledger network can still partially operate, but the impact is more serious.
Various media promote blockchain application cases. When observing and analyzing these application cases, you may wish to read the technical proposal of these cases, remove part of the network structure arbitrarily, and see if the application case can still operate normally or if it is large Some functional modules can still operate.
If part of it is removed, the application case will be paralyzed, it will not have the characteristics of decentralization, and it is not a real blockchain application.