Load balancing method and related apparatus

A load balancing method, comprising:

• receiving, by an interaction node on a source side, an invalidation notification, wherein the invalidation notification comprises an identifier of an invalid object on a target side, and the invalid object comprises an invalid interaction node on the target side, an invalid session group on an interaction node, or an invalid session in a session group;
• deleting, by the interaction node on the source side, recorded information about a load balancing protocol of the invalid object;
• when the interaction node on the source side interacts with the invalid object on the target side, generating, by the interaction node on the source side, an application interaction request whose destination data is empty;
• and
• sending the application interaction request to a load balancer on the target side.

A load balancer, comprising:

• an interface;
• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
• obtain an invalidation notification, wherein the invalidation notification comprises an identifier of an invalid object on a target side, and the invalid object comprises an invalid interaction node, an invalid session group on an interaction node, or an invalid session in a session group;
• broadcast, using the interface, the invalidation notification, wherein the invalidation notification is used to instruct an interaction node on a source side to delete recorded information about a load balancing protocol of the invalid object;
• receive, using the interface, an application interaction request from the interaction node on the source side, wherein destination data in the application interaction request is empty;
• and
• reassign an interaction node in response to the application interaction request.