Abstract: A partition-based method to implement idempotence in an event-driven architecture is provided, which acts to reduce the pressure of database reading and writing, thus improving the performance of event handling. In order to improve parallelism, a consumer cluster (a cluster of multiple consumers that can share the responsibility of processing events) is established such that the events are distributed among different partitions within the cluster. Each partition contains a different consumer worker (with its own cache). An event dispatch module is then used to dispatch events among the consumer workers in a way that keeps the load balanced. In an example embodiment, this is performed by generating a partition identification for an event based on a hash of the context identification of the session established between the user and the application when the event was generated, followed by a modulo operation based on the number of consumer workers in the cluster.

Abstract: A partition-based method to implement idempotence in an event-driven architecture is provided, which acts to reduce the pressure of database reading and writing, thus improving the performance of event handling. In order to improve parallelism, a consumer cluster (a cluster of multiple consumers that can share the responsibility of processing events) is established such that the events are distributed among different partitions within the cluster. Each partition contains a different consumer worker (with its own cache). An event dispatch module is then used to dispatch events among the consumer workers in a way that keeps the load balanced. In an example embodiment, this is performed by generating a partition identification for an event based on a hash of the context identification of the session established between the user and the application when the event was generated, followed by a modulo operation based on the number of consumer workers in the cluster.

Abstract: The present disclosure provides a hook accessory and a presentation device, relating to a field of daily necessities. The hook accessory comprises: a first accessory provided with an engaging portion, the engaging portion being an unclosed annular structure with an outer surface thereof provided with a protruding portion; a second accessory, comprising: a plug which is an unclosed annular structure, an inner side of the plug being provided with a plurality of grooves in cooperation with the protruding portion and arranged along a circumferential direction of the plug; and a clamping portion for fixing a price tag and in connection with the plug, wherein when the first accessory and the second accessory are rotated relative to each other, the protruding portion is movable along the circumferential direction on the inner side of the plug, so as to cooperate with the plurality of grooves respectively.

Abstract: The present disclosure relates to a vehicle recognition method and system. The vehicle recognition method comprises: receiving a first image; extracting a first vehicle brand recognition region and a first color recognition region of the first image; recognizing the extracted first vehicle brand recognition region by a trained vehicle brand deep learning model; recognizing the extracted first color recognition region; and recognizing the vehicle based on the recognition results of the first vehicle brand recognition region and the first color recognition region.

Abstract: The present disclosure relates to a vehicle recognition method and system. The vehicle recognition method comprises: receiving a first image; extracting a first vehicle brand recognition region and a first color recognition region of the first image; recognizing the extracted first vehicle brand recognition region by a trained vehicle brand deep learning model; recognizing the extracted first color recognition region; and recognizing the vehicle based on the recognition results of the first vehicle brand recognition region and the first color recognition region.

Abstract: Provided are a terminal and a method for activating a terminal to facilitate awakening the terminal by a user in a dark environment. The method for activating a terminal includes: when the terminal is in a dormancy state, it is detected whether a screen triggering signal is received that meets a preset condition; if the screen triggering signal is received that meets the preset condition, a light emitting module arranged near a dormancy awakening key is lighted; an awakening signal generated by pressing the dormancy awakening key by a user is received and the terminal is activated upon receiving the awakening signal.