52results about How to "Improve service availability" patented technology

A router and routing protocol redundancy are disclosed to reduce service outage or degradation for a network device and thus to increase service availability on a network due to software and hardware failures of the network device. A network device such as router includes a redundancy platform having an active controller system and a standby controller system. A routing protocol state change is received or generated by the active controller system. The received or generated routing protocol state change is replicated to the standby controller system. By replicating the routing protocol state change, the standby controller system can maintain the routing protocol sessions for the network device if a failure occurs in the active controller system. Furthermore, the routing protocol states are maintained in realtime to handle the dynamic changes created by routing protocols.

The invention provides an optical transmission system which is applicable not only to a known signal but also to an unknown signal, is low in cost, and has high reliability. A branching device branches the optical transmission output of a transmitter, transmits the branched signals over different optical transmission channels. A polarization mode dispersion monitor monitors the state of polarization mode dispersion from the optical transmission channels at the receiving end. A switch control circuit and a switch select a signal with smaller quality deterioration due to the polarization mode dispersion to output it to a receiver (8). This makes it possible to reduce the probability of the quality deterioration of a transmission signal due to polarization mode dispersion.

The invention provides a multi-version program coexistence method and apparatus for a big memory service. The method comprises the steps of receiving a first request sent by a client through a server deploying a first copy, wherein the first request carries a mark of the first request processed by a program of a first version; forwarding the first request to the program of the first version for processing, and determining that the program of the first version is abnormal; sending a notice to the client, so that the client sends a second request to a server deploying a second copy, wherein the second request carries a mark of the second request processed by a program of a second version; and forwarding the second request to the program of the second version for processing by the server deploying the second copy, wherein the first version is an updated version of the second version. According to the method and apparatus, for the big memory service needing multiple versions for release or experiment, the service availability can be effectively improved without increasing the machine cost.

The invention discloses an API gateway guarantee service high availability method and a system based on fusing and secondary caching. The method comprises the following steps of: 1) when an API gateway service receives a service request sent by a calling party, obtaining API configuration information from a memory, determining whether to access a Cache, if yes, obtaining a response result from a first-level cache of the Cache, and if not, sending the service request to a back-end service; 2) generating a corresponding response result by the back end service according to the received service request and putting the response result into a first-level cache and a second-level cache of the Cache; and if the abnormal result returning times of calling the same API gateway service reach a fusingthreshold value, entering a fusing process of the API gateway service, and enabling the API gateway service to enter a fusing opening state. According to the method, high availability of the service is ensured, and the user experience is improved.

The invention discloses a multi-cloud storage system based on cloud and fog cooperation and a management method thereof. The multi-cloud storage system based on the cloud and fog cooperation and the management method thereof are high in service availability, good in access performance, low in storage cost and high in data security. The multi-cloud storage system comprises a plurality of clients (1), fog computing nodes (2) and a multi-cloud storage service (3), wherein the fog computing nodes (2) are adjacent to the clients (1), the fog computing nodes (2) are in communication interconnectionwith the clients (1) through a network, and the multi-cloud storage service (3) is far away from the fog computing nodes (2) and the clients (1) and is in communication interconnection with the fog computing nodes (2) through a remote network. The method comprises the processing steps of (10) sending an access request, (20) authenticating the access request, (30) reducing file data, (40) performing file security fault-tolerant coding, (50) sending coded file fragments, (60) receiving file fragment processing, (70) migrating cloud storage service and (80) deleting files.

The invention relates to a service system providing an offline message and a service method. Various kinds of offline messages are classified and tidied in advance and then a common portion of the offline messages on pattern and content aspects is concluded and organized so as to be served as a message template. And the message template is stored in a message template server in a server and a message template storage area in a client. The service method which is used to provide the offline message comprises the following steps that a message adding party served as a first client adds a message parameter to a message service system in the server; the message service system inspects whether a target user served as a second client is on line; if the target user is not on line, a message which needs to be transmitted is determined to be the offline message and the message parameter corresponding to the offline message is stored to a database in the server; when the target user is on line, the message service system issues the message parameter stored in the database to the target user.

The invention discloses an application deployment method, an apparatus, a computer device and a storage medium, wherein the method comprises the following steps: obtaining an online mode specified bya user from at least two online modes; acquiring at least one uplink cluster specified by a user; according to the uplink mode specified by the user, the application is deployed on each cluster specified by the user. By applying the scheme of the invention, various business scenarios can be satisfied and the service availability can be improved.

The embodiment of the invention provides a server security defense method and system, communication equipment and a storage medium, a client sends a domain name resolution request to a domain name server, and the domain name server resolves a server domain name in request information into an identification management server IP address and returns the identification management server IP address tothe client; the client sends a service request to the identifier management server, the service request comprises a service identifier, the identifier management server requests a dynamic identifier from the identifier gateway, the identifier gateway allocates dynamic identifier information and returns the dynamic identifier information to the identifier management server, a mapping relationship is established, and the identifier management server returns a redirection response to the client; and the client sends a service request to the identification gateway, and the identification gateway converts the service request information according to the mapping relationship, sends the service request information to the service server, converts the received response information of the service server and sends the converted response information to the client. In some implementation processes, the communication parameters of the server are randomly and dynamically transformed, the target server is actively protected, and the safety is improved.

The invention discloses a data request processing method and device, and a computer readable storage medium, and belongs to the technical field of distributed services, the method comprises the stepsof receiving a task request sent by a target service in a plurality of services, the task request being generated by the target service in response to a download request of a client for a target datafile; creating a task for downloading the target data file according to the task request, determining a task weight of the task, and adding the task into a task queue according to the task weight of the task; performing asynchronous processing on the tasks in the task queue to download a target data file; and returning the storage path of the target data file to the client. According to the method, decoupling of a data downloading function in the application service can be realized, repeated development is not needed, sharing of the function service is achieved, resource occupation of the target service is reduced in the file downloading process, the service availability is improved, large-data-volume data downloading can be supported, and the service stability can be guaranteed.

The invention provides a failover method and a failover device of an HBase system. The method is applied to a first working node in an HBase system. The method comprises the following steps of obtaining a pre-writing log system WAL file sent by a management node in an HBase system, wherein the WAL file comprises: a WAL file; when a second working node in the HBase system breaks down, the WAL filesof a plurality of table fragments are arranged in the second working node; splitting a WAL file in a self node memory; obtaining a WAL file of each table fragment; according to the WAL file of each table fragment in the own node memory, obtaining the WAL file; and determining update data of each table fragment in the memory of the second working node when a fault occurs, and writing the update data of each table fragment into the own node hard disk, thereby realizing transfer and persistent storage of the update data of the table fragments in the memory of the second working node, and avoiding loss of the data in the memory when the second working node has the fault.

The invention relates to a data analysis technology, and discloses a channel user recommendation method, which comprises the following steps of: configuring each channel information and user information at a front end; storing all the channel information and the user information in a background cache; filtering repeated users in the cached user information through a Bloom filter; assembling the user information conforming to the channel preset condition, and putting the user information into a MongoDB database; and recommending corresponding users to different channels according to the user information in the MongoDB database. The invention further provides a server and a computer readable storage medium. According to the channel user recommendation method, the server and the computer readable storage medium provided by the invention, the user information conforming to the conditions can be accurately recommended to different channels, and the influence of repeated recommendation on the channel processing efficiency and the user experience is avoided.

The invention relates to a low-orbit navigation enhancement system which carries a GNSS monitoring receiver on a low-orbit navigation enhancement satellite to realize precise orbit determination and autonomous and flexible generation of GNSS precise correction messages. Under the control of a time-frequency reference provided by a high-stability clock, a low-orbit navigation enhancement signal is generated, a GNSS precise correction message and a broadcast message and a precise correction message of a low-orbit satellite are broadcasted, PPP and PPP-AR are supported, and precision enhancement is realized. A downlink signal broadcasts the low-orbit navigation enhancement signal, broadcasts an atmospheric correction message, supports PPP-RTK positioning and accelerates convergence, and at the same time, broadcasts a low-orbit L-band three-frequency navigation enhancement signal, realizes rapid ambiguity fixation, and realizes second-level convergence high-precision positioning calculation and time service. When a high-power low-orbit navigation enhancement signal is broadcasted, high-availability positioning calculation and time service are realized; meanwhile, narrowband signal components are broadcasted, and low-energy-consumption positioning service is supported. And a message authentication and spreading code authentication mode is adopted, so that the service of security enhancement is realized.

The invention discloses a resource locking method and device and electronic equipment. The method comprises the following steps: providing a resource selection interface for a user to select a targetresource; when a selection operation of a user on a target resource is received through the resource selection interface, determining whether the corresponding user has a resource locking permission or not; and when the user has the resource locking permission, locking the target resource, so that the target resource cannot be used by other users. According to the invention, the resource use efficiency is improved, and the resource use experience of a user is improved. Meanwhile, malicious resource locking is avoided, and the availability of resource use service is improved.

The invention discloses an application layer fault tolerance method and system in a mysql main-standby mode, belongs to the technical field of database disaster tolerance, and aims to solve the technical problem of data inconsistency possibly caused by a mysql main-standby synchronization mechanism. The adopted technical scheme is as follows: the method specifically comprises the following steps: deploying an application layer database; deploying an unsynchronized data access control system database table; the application layer logs in the unsynchronized data access control system; and the application layer writes the service table. The system comprises a deployment module I, a deployment module II, a login module and a writing module, and is used for writing a service table in an application layer.

The invention discloses an application deployment method, an apparatus, a computer device and a storage medium, wherein the method comprises the following steps: obtaining an online mode specified bya user from at least two online modes; acquiring at least one uplink cluster specified by a user; according to the uplink mode specified by the user, the application is deployed on each cluster specified by the user. By applying the scheme of the invention, various business scenarios can be satisfied and the service availability can be improved.