Abstract: The present disclosure relates to a solvent-free moisture curing silicone conformal coating used for the surface protection of circuit boards in the electrical and electronic industries and a preparation method thereof. The solvent-free moisture curing silicone conformal coating comprises (A) a hydrolyzable functional group-terminated linear polysiloxane (I); (B) a hydrolyzable functional group-containing silicone resin with a three-dimensional structure (II); (C) a hydrolyzable functional group-containing crosslinking agent; (D) a catalyst; (E) an adhesion promoter. The solvent-free conformal coating of the present disclosure has low viscosity, high strength and good toughness, and can meet the traditional coating process such as spraying, brushing, dipping, etc., while satisfying the surface protection of the circuit board.

Abstract: Embodiments of the present disclosure provide a method comprising: adding a second set of one or more servers to a first set of servers of a consensus system to form an expanded set of servers, performing a capacity-expanding operation on one of the second set of one or more servers. The capacity-expanding operation comprises: pausing a service process related to distributed services, updating configuration information of the first set of servers in response to the second set of one or more servers being added, and resuming the service process and initiating master server election for the expanded set of servers, wherein one of the expanded set of servers is elected as a master server, the rest of the expanded set of servers are considered as slave servers.

Abstract: An apparatus for facilitating an update process of a software program is disclosed. The apparatus comprises a logic processing module arranged to maintain a connection with a network device, receive information for updating a software program from the network device, perform an updating of the software program based on the received information, and process one or more user requests. The apparatus further comprises an interface module arranged to receive a user request, store the received user request when the updating of the software program by the logic processing module is in progress, store the received user request, and after the updating of the software program completes, provide the stored user request to the logic processing module for processing.

Abstract: A lease-based heartbeat protocol method is provided. The method may include sending a heartbeat request to a server device in a lease period, and receiving a heartbeat request response from the server device; and determining a retry sending at adaptive interval in response to the heartbeat request response being abnormal, and sending a retry heartbeat request to the server device again after the retry sending interval is past, until the lease period expires or a corresponding heartbeat request response is normal. As such, two successive retry heartbeat requests can be sent at a relatively large time interval at an initial stage of heartbeat request retry. At a later stage of the heartbeat request retry, the time interval associated with the retry heartbeat requests is reduced, such that re-sent heartbeat requests can be sent at a higher speed.

Abstract: A system, apparatus, and method for maintaining the consistency of global information is disclosed herein. In one embodiment, the method includes retrieving current version information associated with the global information from a global information server; retrieving global information from the global information server based on the current version information; updating a period of validity of the current version information based on a status of communication with the global information server; and suspending a network service for the global information when detecting that the period of validity of the current version information has expired.

Abstract: A system, apparatus, and method for maintaining the consistency of global information is disclosed herein. The method includes storing historical version information associated with global information; retrieving current version information associated with the global information from a global information server; generating updated historical version information based on the current version information; transmitting an update confirmation notice to the global information server; and retrieving updated global information from the global information server based on the updated historical version information.

Abstract: The present disclosure is directed to a cross-regional data transmission method and device.

Abstract: A weather resistant matte silicone coating special for EMAS, comprising: 80˜130 parts by weight of ?,?-dihydroxypolydimethylsiloxane; 0.5˜10 parts by weight of a linear polydimethylsiloxane with terminal hydroxyl group; 1˜10 parts by weight of fumed silica; 10˜50 parts by weight of precipitated silica; 1˜5 parts by weight of color masterbatch; 0.9˜5 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 1.5˜7 parts by weight of methyltri(methylethylketoximino)silane, 1.5˜7 parts by weight of vinyltri(methylethylketoximino)silane, and 1˜7 parts by weight of aminopropyltriethoxysilane; 1.5˜6 parts by weight of delustering agent; and 250˜350 parts by weight of a solvent. The coating has the properties of low viscosity, high flow, relatively fast curing, moderate strength, good adhesion, good mattness, being environmentally friendly and the like.

Abstract: Embodiments of the present disclosure provide a method comprising: adding a second set of one or more servers to a first set of servers of a consensus system to form an expanded set of servers, performing a capacity-expanding operation on one of the second set of one or more servers. The capacity-expanding operation comprises: pausing a service process related to distributed services, updating configuration information of the first set of servers in response to the second set of one or more servers being added, and resuming the service process and initiating master server election for the expanded set of servers, wherein one of the expanded set of servers is elected as a master server, the rest of the expanded set of servers are considered as slave servers.

Abstract: Embodiments of the disclosure describe a system, method, and apparatus for acquiring global information. The method comprises receiving current version information from a global information server, the current version information associated with current global information and associated with a network service; retrieving the current global information associated with the current version information and associated with the network service from the global information server; and providing or suspending the network service associated with the current global information based on a presence of a stop-write identifier in the current global information.

Abstract: A weather resistant matte silicone coating special for EMAS, comprising: 80˜130 parts by weight of ?,?-dihydroxypolydimethylsiloxane; 0.5˜10 parts by weight of a linear polydimethylsiloxane with terminal hydroxyl group; 1˜10 parts by weight of fumed silica; 10˜50 parts by weight of precipitated silica; 1˜5 parts by weight of color masterbatch; 0.9˜5 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 1.5˜7 parts by weight of methyltri(methylethylketoximino)silane, 1.5˜7 parts by weight of vinyltri(methylethylketoximino)silane, and 1˜7 parts by weight of aminopropyltriethoxysilane; 1.5˜6 parts by weight of delustering agent; and 250˜350 parts by weight of a solvent. The coating has the properties of low viscosity, high flow, relatively fast curing, moderate strength, good adhesion, good mattness, being environmentally friendly and the like.

Abstract: The present disclosure is directed to a cross-regional data transmission method and device.

Abstract: A lease-based heartbeat protocol method is provided. The method may include sending a heartbeat request to a server device in a lease period, and receiving a heartbeat request response from the server device; and determining a retry sending at adaptive interval in response to the heartbeat request response being abnormal, and sending a retry heartbeat request to the server device again after the retry sending interval is past, until the lease period expires or a corresponding heartbeat request response is normal. As such, two successive retry heartbeat requests can be sent at a relatively large time interval at an initial stage of heartbeat request retry. At a later stage of the heartbeat request retry, the time interval associated with the retry heartbeat requests is reduced, such that re-sent heartbeat requests can be sent at a higher speed.

Abstract: Embodiments of the disclosure describe a system, method, and apparatus for acquiring global information. The method comprises receiving current version information from a global information server, the current version information associated with current global information and associated with a network service; retrieving the current global information associated with the current version information and associated with the network service from the global information server; and providing or suspending the network service associated with the current global information based on a presence of a stop-write identifier in the current global information.

Abstract: A system, apparatus, and method for maintaining the consistency of global information is disclosed herein. In one embodiment, the method includes retrieving current version information associated with the global information from a global information server; retrieving global information from the global information server based on the current version information; updating a period of validity of the current version information based on a status of communication with the global information server; and suspending a network service for the global information when detecting that the period of validity of the current version information has expired.

Abstract: A system, apparatus, and method for maintaining the consistency of global information is disclosed herein. The method includes storing historical version information associated with global information; retrieving current version information associated with the global information from a global information server; generating updated historical version information based on the current version information; transmitting an update confirmation notice to the global information server; and retrieving updated global information from the global information server based on the updated historical version information.

Abstract: An apparatus for facilitating an update process of a software program is disclosed. The apparatus comprises a logic processing module arranged to maintain a connection with a network device, receive information for updating a software program from the network device, perform an updating of the software program based on the received information, and process one or more user requests. The apparatus further comprises an interface module arranged to receive a user request, store the received user request when the updating of the software program by the logic processing module is in progress, store the received user request, and after the updating of the software program completes, provide the stored user request to the logic processing module for processing.