Database access method and apparatus, computing device, and computer program product for load balancing between database access service engines

A computing device, comprising:

• a memory storing instructions;
• and
• at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to enable the computing device to work as an application or a database access scheduling module or a database access service engine, so that the computing device performs at least one of the following steps:
• actively establishing, by a database access scheduling module in a local area network, a communication connection to a database access service engine in a public cloud by using an identifier of the database access service engine;
• recording, by an application in the public cloud, a database instance in the local area network and the database access service engine bound to the database instance;
• generating, by the application, an access request, the access request specifying the database instance to be accessed in the local area network;
• sending, by database access service engine, the access request to the database access scheduling module;
• receiving, by the database access scheduling module, an access request sent by the database access service engine, the access request carrying an identifier of a database instance, and the identifier of the database instance is an IP address of the database instance, or the identifier of the database instance is an IP address and a port number of the database instance;
• and
• sending, by the database access scheduling module and according to the identifier of the database instance, the access request to the database instance of multiple database instances in the local area network;
• receiving, by the database access scheduling module and from the database instance, a processing result corresponding to the access request;
• and
• sending, by the database access scheduling module and to the database access service engine, so that the application obtains the processing result corresponding to the access request.

A non-transitory computer-readable media storing computer instructions, that when executed by at least one processor, causes the at least one processor to perform the steps of:

• actively establishing, by a database access scheduling module in a local area network, a communication connection to a database access service engine in a public cloud by using an identifier of the database access service engine;
• recording, by an application in the public cloud, a database instance in the local area network and the database access service engine bound to the database instance;
• generating, by the application, an access request, the access request specifying the database instance to be accessed in the local area network;
• sending, by database access service engine, the access request to the database access scheduling module;
• receiving, by the database access scheduling module, an access request sent by the database access service engine, the access request carrying an identifier of a database instance, and the identifier of the database instance is an IP address of the database instance, or the identifier of the database instance is an IP address and a port number of the database instance;
• and
• sending, by the database access scheduling module and according to the identifier of the database instance, the access request to the database instance of multiple database instances in the local area network;
• receiving, by the database access scheduling module and from the database instance, a processing result corresponding to the access request;
• and
• sending, by the database access scheduling module and to the database access service engine, so that the application obtains the processing result corresponding to the access request.