Resource use methods and apparatuses

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

• determining a quantity of reserved resources that need to be reserved in one node;
• determining nodes in which quantities of current remaining resources are less than the quantity of reserved resources;
• calculating, for each determined node and as a calculated total quantity of resources, a total quantity of resources occupied by allocated service requests in the node;
• determining, for each determined node based on the calculated total quantity of resources, whether the node is capable of satisfying the quantity of reserved resources, and if yes, marking the node as a migratable node;
• selecting one migrating node from migratable nodes;
• migrating, to at least one other node, M allocated service requests corresponding to the migrating node;
• and
• releasing resources occupied by the M allocated service requests in the migrating node, wherein M satisfies a condition that after the resources occupied by the M allocated service requests are released, a quantity of remaining resources in the migrating node is not less than the quantity of reserved resources, wherein M is a positive integer not less than 1.

A computer-implemented system for resource use, 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:
• determining a quantity of reserved resources that need to be reserved in one node;
• determining nodes in which quantities of current remaining resources are less than the quantity of reserved resources;
• calculating, for each determined node and as a calculated total quantity of resources, a total quantity of resources occupied by allocated service requests in the node;
• determining, for each determined node based on the calculated total quantity of resources, whether the node is capable of satisfying the quantity of reserved resources, and if yes, marking the node as a migratable node;
• selecting one migrating node from migratable nodes;
• migrating, to at least one other node, M allocated service requests corresponding to the migrating node;
• and
• releasing resources occupied by the M allocated service requests in the migrating node, wherein M satisfies a condition that after the resources occupied by the M allocated service requests are released, a quantity of remaining resources in the migrating node is not less than the quantity of reserved resources, wherein M is a positive integer not less than 1.