State management methods, methods for switching between master application server and backup application server, and electronic devices

A method for switching between a master application server and a backup application server, applied to a management server, comprising:

• when it is detected that the master application server is in failure, if a backup application server state recorded by the management server is a backup ready state, querying for a connection state of a hot-backup connection between the master application server and the backup application server;
• wherein the backup ready state is used to indicate that the hot-backup connection between a backup application server and a master application server is abnormal when the backup application server is not in failure;
• and
• when a backup application server state indicated by the connection state is inconsistent with the backup application server state recorded by the management server, controlling the master application server and the backup application server to perform switching between the master application server and the backup application server.

An electronic device, comprising:

• a processor and a non-transitory machine-readable storage medium;
• wherein the non-transitory machine-readable storage medium stores machine executable instructions that can be executed by the processor;
• and
• the processor is configured to execute the machine executable instructions to perform the following operations:
• querying for a connection state of a hot-backup connection between a master application server and a backup application server;
• and
• when a backup application server state indicated by the connection state is inconsistent with a backup application server state recorded by a management server, updating the recorded backup application server state to the backup application server state indicated by the connection state;
• wherein the backup application server state indicated by the connection state is inconsistent with the recorded backup application server state comprises at least one of:
• when the backup application server state indicated by the connection state is a backup active state, if the recorded backup application server state is a backup ready state, it is determined that the backup application server state indicated by the connection state is inconsistent with the recorded backup application server state;
• or
• when the backup application server state indicated by the connection state is a backup ready state, if the recorded backup application server state is a backup active state, it is determined that the backup application server state indicated by the connection state is inconsistent with the recorded backup application server state;
• wherein the backup active state is used to indicate that a backup application server works normally, and when the hot-backup connection is normal, the connection state of the hot-backup connection indicates that the backup application server state is the backup active state;
• the backup ready state is used to indicate that the hot-backup connection between a backup application server and a master application server is abnormal when the backup application server is not in failure, and when the backup application server is not in failure, if the hot-backup connection is abnormal, the connection state of the hot-backup connection indicates the backup application server state is the backup ready state.