Abstract: A traffic congestion detection method, a traffic congestion detection apparatus, an electronic device and a storage medium are provided. The traffic congestion detection method is applied to a roadside unit (RSU), and includes: acquiring vehicle information of each vehicle driving into a detection region of the RSU; calculating a first congestion index according to the vehicle information, with the first congestion index representing a traffic congestion condition in the detection region of the RSU; acquiring a plurality of first congestion indexes of RSUs in a target region, with the target region including a plurality of detection regions of the RSUs; and calculating a second congestion index according to the plurality of first congestion indexes, with the second congestion index representing a traffic congestion condition of the target region.

Abstract: A data access method in a file system comprises receiving a data access request including an identifier of a to-be-accessed node, obtaining access permission for the to-be-accessed node based on the identifier of the to-be-accessed node, wherein when a permission version number of the to-be-accessed node is not the latest in permission version numbers of all nodes indicated by path information of the to-be-accessed node in a file system, the access permission for the to-be-accessed node inherits a permission record corresponding to a parent node that is of the to-be-accessed node and that has a latest permission version number, and performing authentication based on the access permission for the to-be-accessed node, and accessing data of the to-be-accessed node after the authentication succeeds.

Abstract: In a method, identifiers are obtained of N to-be-upgraded nodes. An upgrade sequence of the N to-be-upgraded nodes is set according to the identifiers of the N to-be-upgraded nodes. A backup node of each to-be-upgraded node is determined according to the upgrade sequence of the N to-be-upgraded nodes, to obtain node backup information. A backup node of the Xth to-be-upgraded node is at least one node in a set that includes a to-be-upgraded node prior to the Xth to-be-upgraded node and a to-be-upgraded node following the (X+[Z+1])th to-be-upgraded node. Z is a ratio of a time required by the Xth to-be-upgraded node for migrating back service data to an online upgrade time of the Xth to-be-upgraded node. The node backup information is sent to the N to-be-upgraded nodes.

Abstract: A data access method in a file system comprises receiving a data access request including an identifier of a to-be-accessed node, obtaining access permission for the to-be-accessed node based on the identifier of the to-be-accessed node, wherein when a permission version number of the to-be-accessed node is not the latest in permission version numbers of all nodes indicated by path information of the to-be-accessed node in a file system, the access permission for the to-be-accessed node inherits a permission record corresponding to a parent node that is of the to-be-accessed node and that has a latest permission version number, and performing authentication based on the access permission for the to-be-accessed node, and accessing data of the to-be-accessed node after the authentication succeeds.

Abstract: In a method, identifiers are obtained of N to-be-upgraded nodes. An upgrade sequence of the N to-be-upgraded nodes is set according to the identifiers of the N to-be-upgraded nodes. A backup node of each to-be-upgraded node is determined according to the upgrade sequence of the N to-be-upgraded nodes, to obtain node backup information. A backup node of the Xth to-be-upgraded node is at least one node in a set that includes a to-be-upgraded node prior to the Xth to-be-upgraded node and a to-be-upgraded node following the (X+[Z+1])th to-be-upgraded node. Z is a ratio of a time required by the Xth to-be-upgraded node for migrating back service data to an online upgrade time of the Xth to-be-upgraded node. The node backup information is sent to the N to-be-upgraded nodes.

Abstract: A data processing method and a device in a distributed file storage system, where the method includes receiving, by a client agent, a data processing request which carries a file identifier, an offset address, a file length, and other information of a target file; obtaining, by the client agent, redundancy information according to the file identifier carried in the data processing request, where the redundancy information includes a quantity of data strips, N, of the distributed file storage system and a quantity of parity strips, M, of the distributed file storage system; determining a quantity of valid strips, DSC, of the target file according to the offset address and the length information; determining a quantity of actual strips, N?, of the target file according to the DSC and the M; and determining corresponding strips according to the N? and processing the corresponding strips.

Abstract: A caching method for a distributed storage system, a lock server node, and a lock client node is disclosed. When the lock server node receives a first lock request sent by the first lock client node for locking a first data stripe, if the lock server node determines that the first lock request is a read lock request received for the first time on the first data stripe or a write lock request on the first data stripe, the lock server node records the owner of the first data stripe is the first lock client node in recorded attribute information of data stripes, and returns to the first lock client node a first response message indicating that the owner of the first data stripe is the first lock client node, and instructing the first lock client node to cache the first data stripe.

Abstract: A data processing method and a device in a distributed file storage system, where the method includes receiving, by a client agent, a data processing request which carries a file identifier, an offset address, a file length, and other information of a target file; obtaining, by the client agent, redundancy information according to the file identifier carried in the data processing request, where the redundancy information includes a quantity of data strips, N, of the distributed file storage system and a quantity of parity strips, M, of the distributed file storage system; determining a quantity of valid strips, DSC, of the target file according to the offset address and the length information; determining a quantity of actual strips, N?, of the target file according to the DSC and the M; and determining corresponding strips according to the N? and processing the corresponding strips.

Abstract: A caching method for a distributed storage system, a lock server node, and a lock client node is disclosed. When the lock server node receives a first lock request sent by the first lock client node for locking a first data stripe, if the lock server node determines that the first lock request is a read lock request received for the first time on the first data stripe or a write lock request on the first data stripe, the lock server node records the owner of the first data stripe is the first lock client node in recorded attribute information of data stripes, and returns to the first lock client node a first response message indicating that the owner of the first data stripe is the first lock client node, and instructing the first lock client node to cache the first data stripe.

Abstract: A method for implementing information exchange is disclosed in the present invention, and the method comprises: a calling user terminal sending information to be sent to a called user terminal by carrying the information in a user-to-user signaling (UUS) field of a call message; the called user terminal sorting out the information carried in the UUS field from the call message after receiving the call message, and feeding back a message other than an acknowledge message to the calling user terminal; the calling user terminal terminating this call after receiving the message fed back by the called user terminal. The simplicity and the easy transformation of the software update of user terminals are fully utilized in the present invention; therefore the present invention can enable a user terminal to have the information exchange function only by properly modifying the software of the user terminal.

Abstract: The present invention discloses a method for clear session and scrambled session communication switch between mobile terminals comprising: a first terminal initiating a scrambled session switch control request to a second terminal, and the second terminal returning a scrambled session switch control response after receiving the scrambled session switch control request; and the first terminal initiating a key negotiation process with the second terminal after receiving the scrambled session switch control response returned by the second terminal, and then transferring to scrambled session communication or suspending the scrambled session communication with the second terminal; wherein the scrambled session switch control request includes a scrambled session request or a clear session request.

Abstract: The present invention discloses a method for clear session and scrambled session communication handover between mobile terminals comprising: a first terminal initiating a scrambled session handover control request to a second terminal, and the second terminal returning a scrambled session handover control response after receiving the scrambled session handover control request; and the first terminal initiating a key negotiation process with the second terminal after receiving the scrambled session handover control response returned by the second terminal, and then transferring to scrambled session communication or suspending the scrambled session communication with the second terminal; wherein the scrambled session handover control request includes a scrambled session request or a clear session request.

Abstract: The present invention provides a method and system for verifying a user alias. The method comprises: a calling terminal inserting a set alias and a calling user's own number into calling information when calling a called terminal; after the called terminal receives the calling information, when the calling terminal registers calling number display restriction or when the calling terminal cancels the calling number display restriction and the calling number of the calling is inconsistent with a calling user number stored locally in the called terminal, determining whether the calling user's own number matches successfully with the calling user number stored locally in the called terminal to display in different modes when the matching is successful and unsuccessful, respectively.

Abstract: The disclosure discloses a method and device for sharing telephone number information. A local mobile terminal sends search request information for target user to at least one selected mobile terminal; the selected mobile terminal receives and identifies the search request information; the selected mobile terminal searches for the telephone number information of the target user in itself according to the search request information and feeds back search result to the local mobile terminal. Because a third party server is not needed to take part in the search, the disclosure guarantees higher real-time performance of search, and because the help of a third party mobile terminal can be further requested during searching process, the effectiveness of search can be guaranteed together.

Abstract: A method for implementing information exchange is disclosed in the present invention, and the method comprises: a calling user terminal sending information to be sent to a called user terminal by carrying the information in a user-to-user signaling (UUS) field of a call message; the called user terminal sorting out the information carried in the UUS field from the call message after receiving the call message, and feeding back a message other than an acknowledge message to the calling user terminal; the calling user terminal terminating this call after receiving the message fed back by the called user terminal. The simplicity and the easy transformation of the software update of user terminals are fully utilized in the present invention; therefore the present invention can enable a user terminal to have the information exchange function only by properly modifying the software of the user terminal.

Abstract: The present invention provides a method and system for verifying a user alias. The method comprises: a calling terminal inserting a set alias and a calling user's own number into calling information when calling a called terminal; after the called terminal receives the calling information, when the calling terminal registers calling number display restriction or when the calling terminal cancels the calling number display restriction and the calling number of the calling is inconsistent with a calling user number stored locally in the called terminal, determining whether the calling user's own number matches successfully with the calling user number stored locally in the called terminal to display in different modes when the matching is successful and unsuccessful, respectively.