Abstract: A virtual machine (VM) scaling method and device is provided. The method includes determining a VM resource pool corresponding to an application when a new VM needs to be added for the application; searching, according to a parameter of the new VM that needs to be added for the application, the determined VM resource pool for a VM that conforms to the parameter; registering the conforming VM with a load balancer (LB); and starting the VM to provide a service for the application. A VM that conforms to a requirement of the application is selected from a pre-created VM resource pool, and the VM is registered to provide a service for the application when a new VM is to be added for an application.

Abstract: A method for allocating a virtual resource based on a blockchain, including: receiving a resource allocation transaction sent by a client, wherein the resource allocation transaction includes a user identifier of a target user; in response to the resource allocation transaction, invoking verification logic in a smart contract deployed in the blockchain to verify whether a service indicator of the target user within a preset service cycle satisfies a virtual resource allocation condition; and when the service indicator satisfies the virtual resource allocation condition, invoking virtual resource allocation logic in the smart contract to allocate a preset amount of virtual resources to the target user from a virtual resource pool and transfer the preset amount of virtual resources to a blockchain account corresponding to the user identifier, wherein virtual resources in the virtual resource pool are associated with service profits of a service operator corresponding to a service of the target user.

Abstract: A method for allocating a virtual resource based on a blockchain, including: receiving a resource allocation transaction sent by a client, wherein the resource allocation transaction includes a user identifier of a target user; in response to the resource allocation transaction, invoking verification logic in a smart contract deployed in the blockchain to verify whether a service indicator of the target user within a preset service cycle satisfies a virtual resource allocation condition; and when the service indicator satisfies the virtual resource allocation condition, invoking virtual resource allocation logic in the smart contract to allocate a preset amount of virtual resources to the target user from a virtual resource pool and transfer the preset amount of virtual resources to a blockchain account corresponding to the user identifier, wherein virtual resources in the virtual resource pool are associated with service profits of a service operator corresponding to a service of the target user.

Abstract: Disclosed are a method and device for implementing instant messaging through a browser. A plug-in interface of an instant messaging tool is preset on the browser. The method comprises: a master process of the browser creating a plug-in process corresponding to the instant messaging tool; triggering the plug-in interface to instruct the master process of the browser to reload a browser window; the master process of the browser dividing, in the browser window, page presentation ranges of a plug-in page of the instant messaging tool and a current tab of the browser window and notifying the plug-in process of the page presentation ranges; and the plug-in process generating the plug-in page according to the divided page presentation ranges and loading the plug-in page and the re-rendered current tab side by side in the browser window.

Abstract: A method and an apparatus for controlling virtual machine (VM) migration is presented, where the method includes obtaining information about an application running on a first VM, where the first VM runs on a first host; determining, according to the information about the application, whether an application associated with the application running on the first VM runs on a second VM, where the second VM is any VM running on a second host; and if no application associated with the application running on the first VM runs on the second VM, migrating the first VM to the second host. The embodiments of the present disclosure can ensure that reliability of an application is not affected during a VM migration process.

Abstract: A method and an apparatus for controlling virtual machine migration is presented, where the method includes obtaining information about an application running on a first virtual machine, where the first virtual machine runs on a first host; determining, according to the information about the application, whether an application associated with the application running on the first virtual machine runs on a second virtual machine, where the second virtual machine is any virtual machine running on a second host; and if no application associated with the application running on the first virtual machine runs on the second virtual machine, migrating the first virtual machine to the second host. The embodiments of the present disclosure can ensure that reliability of an application is not affected during a virtual machine migration process.

Abstract: A virtual machine (VM) scaling method and device is provided. The method includes determining a VM resource pool corresponding to an application when a new VM needs to be added for the application; searching, according to a parameter of the new VM that needs to be added for the application, the determined VM resource pool for a VM that conforms to the parameter; registering the conforming VM with a load balancer (LB); and starting the VM to provide a service for the application. A VM that conforms to a requirement of the application is selected from a pre-created VM resource pool, and the VM is registered to provide a service for the application when a new VM is to be added for an application.

Abstract: Embodiments relate to joining data across a parallel database and a distributed processing system. Aspects include receiving a query on data stored in parallel database T and data stored in distributed processing system L, applying local query predicates and projection to data T to create T?, and applying local query predicates and projection to L to create L?. Based on determining that a size of L? is less than a size of T? and that the size of L? is less than a first threshold, transmitting L? to the parallel database and executing a join between T? and L?. Based on determining that a number of the nodes distributed processing system n multiplied by the size of T? is less than the size of L? and that the size of T? is less than a second threshold; transmitting T? to the distributed processing system and executing a join between T? and L?.

Abstract: A method for scheduling a VM resource, an apparatus, and a system is presented, where the method for scheduling a VM resource includes, when a service device determines that a VM scaling operation needs to be performed on a quantity of VMs used for serving an application, obtaining, by the service device, an application type of the application; determining, by the service device according to a correspondence between a minimum constituent unit of the application and the application type, a quantity of VMs for the VM scaling operation; and performing the VM scaling operation according to the determined quantity of VMs. Therefore, the present disclosure improves appropriateness of a VM scaling operation.

Abstract: A method and an apparatus for controlling virtual machine migration is presented, where the method includes obtaining information about an application running on a first virtual machine, where the first virtual machine runs on a first host; determining, according to the information about the application, whether an application associated with the application running on the first virtual machine runs on a second virtual machine, where the second virtual machine is any virtual machine running on a second host; and if no application associated with the application running on the first virtual machine runs on the second virtual machine, migrating the first virtual machine to the second host. The embodiments of the present disclosure can ensure that reliability of an application is not affected during a virtual machine migration process.

Abstract: Disclosed are a method and device for implementing instant messaging through a browser. A plug-in interface of an instant messaging tool is preset on the browser. The method comprises: a master process of the browser creating a plug-in process corresponding to the instant messaging tool; triggering the plug-in interface to instruct the master process of the browser to reload a browser window; the master process of the browser dividing, in the browser window, page presentation ranges of a plug-in page of the instant messaging tool and a current tab of the browser window and notifying the plug-in process of the page presentation ranges; and the plug-in process generating the plug-in page according to the divided page presentation ranges and loading the plug-in page and the re-rendered current tab side by side in the browser window.

Abstract: Embodiments relate to joining data across a parallel database and a distributed processing system. Aspects include receiving a query on data stored in parallel database T and data stored in distributed processing system L, applying local query predicates and projection to data T to create T?, and applying local query predicates and projection to L to create L?. Based on determining that a size of L? is less than a size of T? and that the size of L? is less than a first threshold, transmitting L? to the parallel database and executing a join between T? and L?. Based on determining that a number of the nodes distributed processing system n multiplied by the size of T? is less than the size of L? and that the size of T? is less than a second threshold; transmitting T? to the distributed processing system and executing a join between T? and L?.

Abstract: A vertical turning-milling complex machining center comprises a horizontally-arranged bed body (6) and a vertically-arranged column (7). The bed body (6) is provided with an X-axis lateral supporting linear track (2) and an X-axis guide screw (5). The bed body (6) is also provided with a uniaxial rotating table (1) which can reciprocate and is driven directly by a first external rotor torque motor. The column (7) is vertically provided with a Z-axis lateral supporting linear track (10), a Z-axis guide screw (9) and a crossbeam (11) that reciprocates up and down. The crossbeam (11) is provided with a transverse Y-axis linear track (13), a Y-axis guide screw (12) and a single-pendulum milling head seat frame that can reciprocate along the Y-axis guide screw (12). The single-pendulum milling head is driven directly by a second external rotor torque motor.

Abstract: A vertical turning-milling complex machining center comprises a horizontally-arranged bed body (6) and a vertically-arranged column (7). The bed body (6) is provided with an X-axis lateral supporting linear track (2) and an X-axis guide screw (5). The bed body (6) is also provided with a uniaxial rotating table (1) which can reciprocate and is driven directly by a first external rotor torque motor. The column (7) is vertically provided with a Z-axis lateral supporting linear track (10), a Z-axis guide screw (9) and a crossbeam (11) that reciprocates up and down. The crossbeam (11) is provided with a transverse Y-axis linear track (13), a Y-axis guide screw (12) and a single-pendulum milling head seat frame that can reciprocate along the Y-axis guide screw (12). The single-pendulum milling head is driven directly by a second external rotor torque motor.