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In Raft, there are two places for configuration. One is local configuration. What is the other?
In Raft, configuration occurs at two levels: local and channel. The local configuration pertains to node-specific settings such as TLS communication and file storage. The channel configuration, on the other hand, defines the membership and operational parameters of the Raft cluster for a specific channel, including settings like heartbeat frequency and leader timeouts. This dual-level configuration allows for precise control over the behavior of Raft nodes within the Hyperledger Fabric network .
How would a developer iteratively test and develop a smart contract without the overhead of the smart contract lifecycle process for every update?
For developers looking to iteratively test and develop smart contracts in Hyperledger Fabric without the overhead of the full lifecycle process for each update, the recommended approach is to run the chaincode in development mode. This mode allows developers to test and debug chaincode directly on their machines without having to package, install, approve, and commit changes on the network each time. Development mode simplifies the iterative development process by allowing direct interaction with the chaincode during its development, making it easier to make and test changes quickly and efficiently. This contrasts with other methods that involve manual updates, redeployments, or using a production network, all of which are more time-consuming and complex.
Which are the transaction steps that are managed by the Fabric gateway service?
The transaction steps managed by the Fabric gateway service in Hyperledger Fabric are to evaluate, endorse, submit, and obtain the commit status of transactions. This service simplifies the process for clients by handling these critical transaction steps, which facilitates more efficient transaction processing and management within the network .
When reading and modifying the ledger state in Hyperledger Fabric, what type of schema does the data stored in the ledger need to adhere if the state database is LevelDB?
When using LevelDB as the state database in Hyperledger Fabric, there is no specific schema that the data stored in the ledger needs to adhere to. LevelDB is a key-value store, which does not enforce any schema on the data it holds. This flexibility allows applications to define their own formats and structures for the data they store, which can vary from simple strings and numbers to more complex serialized data structures. This schema-less nature of LevelDB enables developers to implement the data handling that best suits their application's needs without the constraints of a predefined database schema.
Which subcommand adds a peer to a channel in Hyperledger Fabric?
In Hyperledger Fabric, the correct subcommand to add a peer to a channel is peer channel join. This command is used by a peer node to join an existing channel. The command requires a block to be specified which typically is the genesis block of the channel, allowing the peer to synchronize with the channel's ledger from the beginning. Other commands like peer channel fetch, peer channel create, and peer channel update serve different purposes. peer channel fetch retrieves blocks from a channel, peer channel create is used to set up a new channel, and peer channel update modifies channel settings. Thus, peer channel join is the specific command used to connect a peer to a channel.
