2results about How to "Synchronization is stable" patented technology

This utility model provides a paper feeder for high-strength seamless resin tube production, relating to the field of feeding equipment technology. It includes a main frame assembly; two sets of sliding components are slidably installed on the main frame assembly, with a moving component sliding at the outer end of each sliding component, and a lifting component positioned at the lower outer end of the moving component. The sliding components are directly slidably installed on the transmission rods and other components of the main frame assembly, and the moving component can be slidably installed on the sliding components. The lifting component on the moving component can achieve lifting and lowering. A rotating component installed on the moving component can pass through a bearing shaft, allowing the bearing shaft to be mounted on the rotating component to support the paper feed roller, thus achieving the feeding function of the paper feed roller. This solves the problem of needing specific equipment for lifting, the potential for unnecessary safety hazards when using ordinary hoisting equipment, and the problem of paper roll rotation and conveying jams when using the equipment's own lifting device.

The application discloses a database bidirectional data synchronization method, an electronic device and a computer program product, and belongs to the technical field of databases. The method comprises the following steps: generating target hash data based on change data of a first database, and storing the target hash data into a target sending thread of the first database; the target sending thread is any one of a plurality of sending threads in the first database; the target sending thread sends the target hash data to a target receiving thread of a second database; the target receiving thread is a receiving thread corresponding to the target sending thread in a plurality of receiving threads in the second database; the target receiving thread traverses each sending thread in the second database based on the target hash data, checks whether there is a same hash value as the target hash data, and obtains a check result; and performing data synchronization on the second database based on the change data of the first database according to the check result.