In this chapter, we will move our focus to Ethereum private chains. For developers, private blockchains are set up for testing purposes. Private chains have advantages over public blockchains in testing. For example, there is no need for nodes syncing or obtaining test ether, as you are the only user, and there are no other smart contracts. But the disadvantage is that the testing won't be as good as real scenarios in a public blockchain, in the absence of other nodes, users, and contracts.
As blockchain technology has matured, enterprises have started to adopt the technology for their own use cases. It's important for you to understand not only the public blockchains but also the private and permissioned ones. Developers should know how to set up their own blockchains.
We will have a look at the difference between public and private...