Consensus methods and systems in consortium blockchain

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• in response to determining that a first consensus node in a consensus network of a consortium blockchain does not complete a consensus operation on a target consensus data within a predetermined time period, broadcasting, by the first consensus node, a ViewChange message in the consensus network based on received ECHO messages broadcast for the target consensus data and received signatures, wherein the ECHO messages broadcast for the target consensus data and the signatures are sent by other consensus nodes in the consensus network;
• receiving, by a first consensus primary node, the ViewChange message broadcast by the first consensus node, wherein the first consensus primary node is a consensus primary node corresponding to a view existing when the consensus operation is performed on the target consensus data. in response to determining that N−f verified ViewChange messages are received, constructing, by the first consensus primary node, a NewView message based on the ECHO messages and the signatures in the N−f verified ViewChange messages, and broadcasting, by the first consensus primary node, the NewView message to the consensus network to change a view of the consensus network to a target view, wherein f is a maximum quantity of abnormal consensus nodes allowed in the consensus network, N is a quantity of consensus nodes in the consensus network, and N>3f+1;
• and
• in response to a determination that a present consensus node has an ECHO message corresponding to the target consensus data, broadcasting, by a second consensus node, an ECHO message for the target consensus data in the consensus network, wherein a view number in the ECHO message is a view number of the target view.

A computer-implemented system, comprising:

• one or more computers;
• and
• one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
• in response to determining that a first consensus node in a consensus network of a consortium blockchain does not complete a consensus operation on a target consensus data within a predetermined time period, broadcasting, by the first consensus node, a ViewChange message in the consensus network based on received ECHO messages broadcast for the target consensus data and received signatures, wherein the ECHO messages broadcast for the target consensus data and the signatures are sent by other consensus nodes in the consensus network;
• receiving, by a first consensus primary node, the ViewChange message broadcast by the first consensus node, wherein the first consensus primary node is a consensus primary node corresponding to a view existing when the consensus operation is performed on the target consensus data.
• in response to determining that N−f verified ViewChange messages are received, constructing, by the first consensus primary node, a NewView message based on the ECHO messages and the signatures in the N−f verified ViewChange messages, and broadcasting, by the first consensus primary node, the NewView message to the consensus network to change a view of the consensus network to a target view, wherein f is a maximum quantity of abnormal consensus nodes allowed in the consensus network, N is a quantity of consensus nodes in the consensus network, and N>3f+1;
• and
• in response to a determination that a present consensus node has an ECHO message corresponding to the target consensus data, broadcasting, by a second consensus node, an ECHO message for the target consensus data in the consensus network, wherein a view number in the ECHO message is a view number of the target view.