Service disaster recovery backup method, service disaster recovery backup system and traffic offload node

A service disaster recovery backup method, applied to a first traffic offload (TOF) node, comprising:

• after joining a cluster of TOF nodes, querying each TOF node in the cluster for a service data abstract, wherein a keyword in the service data abstract is an identifier of the first TOF node;
• and
• in response to that the service data abstract is not queried, undertaking, as an activation node, a local breakout service of service data of the first TOF node, selecting a second TOF node as a backup node in the cluster, and publishing the service data abstract with the identifier of the first TOF node as the keyword in the cluster,
• wherein the service data abstract comprises an activation node and a backup node of the service data, the backup node is configured to synchronize the service data of the first TOF node with the first TOF node, and take over the local breakout service of the service data of the first TOF node in response to detecting a failure of the first TOF node.