CN110417829A - A content access method and device - Google Patents

Abstract

The present application discloses a method and device for accessing content. The method includes: receiving a first access request sent by a first user equipment, where the first access request includes the identity of the first user equipment and the content that the first user equipment wants to access. the identification of the target content; determine the first data node storing the target content according to the identification of the target content; determine whether the access to the target content carried by the first user equipment by the first data node meets the requirements of communication quality Constraint conditions; if not satisfied, backing up the target content to a second data node, wherein the access to the target content by the first user equipment carried by the second data node satisfies the constraint conditions; The first user equipment returns the address of the second data node, so that the first user equipment accesses the target content backed up on the second data node. The technical problem that the content access method in the prior art cannot guarantee the communication quality is solved.

Description

A content access method and device

technical field

The present application relates to the technical field of computer communication, in particular to a content access method and device.

Background technique

The data center network includes multiple data nodes, different data nodes can store different content, and multiple user devices can access the same content on the same data node. As the network structure becomes more and more complex, some network devices may have better communication quality when accessing the content on the data node, while other network devices may have poorer communication quality when accessing the content on the data node. Therefore, existing data access methods cannot guarantee the communication quality of network devices in the network.

Contents of the invention

The present application provides a content access method and device to solve the problem in the prior art that the communication quality of the network equipment in the network cannot be guaranteed when the user equipment accesses the data of the data center.

In the first aspect, the embodiment of the present application provides a content backup method, the method includes: after the server receives the first access request sent by the first user equipment, determines to save the target content according to the identification of the target content in the first access request When the first user accesses the target content in the first data node, judge whether the constraint condition of communication quality can be satisfied, if not, back up the target content to the second data node satisfying the constraint condition of communication quality , and return the address of the second data node to the first user equipment, so that the first user equipment accesses the target content backed up in the second data node. Through the solution provided by this embodiment, it is possible to judge whether the first data node is satisfied according to the constraint conditions of communication quality, and if not satisfied, the target content is backed up to the second data node that meets the constraint conditions of communication quality, so as to realize the dynamic migration of the target content , improving the communication quality of network equipment.

Optionally, after backing up the target content to the second data node, the method further includes: the server receiving a second access request sent by the second user equipment, where the second access request includes the information to be accessed by the second user equipment The identifier of the target content is the same as the identifier of the target content to be accessed by the first user equipment, and then, the server judges whether the access to the target content by the second user equipment is carried by the first data node and the second data node. Satisfy the constraints of communication quality; if none of them are satisfied, back up the target content to a third data node that satisfies the constraints of the communication quality of the second user equipment’s access to the target content, and send to the second The user equipment returns the address of the third data node, so that the second user equipment accesses the target content backed up by the second data node. Through the solution provided in this embodiment, after the server determines that the access to the target content by the first user equipment carried by the first data node does not meet the communication quality constraints, the server does not back up the content to be accessed by the user equipment When the user equipment access request is received in real time, and the data node backed up by the target content does not meet the communication quality requirements, it must be backed up until the data node backed up by the target content bears the first user equipment’s response to the data node. Access to the target content does not meet the constraints of communication quality.

Optionally, the constraints include: the access delay required by the first user equipment to access the target content in the first data node is not greater than a first threshold; and/or the first user equipment accesses the target content in the first data node The bandwidth resource occupied by the target content is not greater than the second threshold; and/or the ratio between the number of backups of the target content and the number of user equipment is not greater than the third threshold.

Optionally, before backing up the target content to the second data node, the method includes: determining, by the server, a data node satisfying the constraint condition as the second data node.

Optionally, after backing up the target content to the second data node, further comprising: the server receiving a third access request sent by a third user equipment and a fourth access request sent by a fourth user equipment, the third access request Including the identifier of the third user equipment and the identifier of the target content, the fourth access request includes the identifier of the fourth user equipment and the identifier of the target content; judging that the first data node bears the first data node Whether the access of the target content by the three-user equipment or the four-user equipment satisfies the constraint condition of communication quality, and whether the second data node bears the access to the target content by the third user equipment or the fourth user equipment, whether Satisfy the constraint condition of communication quality; if none of them are satisfied, determine a third data node and a fourth data node, and the third data node bears the third user equipment's access to the target content and the third data node Four data nodes bear the fourth user equipment's access to the target content, all of which meet the communication quality constraints, and the time delay required for the target content of the first data node to be backed up to the third data node is the same as the target content of the first data node The time delay difference between content backup to the fourth data node is smaller than the fourth threshold; the target content is backed up to the third data node and the fourth data node; and the third data node is returned to the third user equipment address, so that the third user equipment accesses the target content backed up by the third data node, and returns the address of the fourth data node to the fourth user equipment, so that the fourth user equipment accessing the target content backed up by the fourth data node.

Through the solution provided in this embodiment, when the server determines the third data node and the fourth data node, it does not only determine that the third data node bears the access to the target content by the third user equipment and the The fourth data node bears the fourth user equipment's access to the target content that meets the communication quality constraints, and it is also necessary to determine the time delay required for the backup of the target content of the first data node to the third data node and the first data The time delay difference required for backing up the target content of the node to the fourth data node is less than the fourth threshold, and when the time delay difference is less than the fourth threshold, the third data node and the fourth data node meet the synchronous backup condition.

In a second aspect, the present application provides a content access device, including:

A receiving unit, configured to receive a first access request sent by a first user equipment, where the first access request includes an identifier of the first user equipment and an identifier of target content to be accessed by the first user equipment;

A processing unit, configured to determine a first data node that stores the target content according to the identifier of the target content, and determine whether the access to the target content carried by the first user equipment by the first data node satisfies If the constraint condition of communication quality is not satisfied, backing up the target content to a second data node, wherein the access to the target content carried by the first user equipment by the second data node satisfies the constraint condition;

A sending unit, configured to return the address of the second data node to the first user equipment, so that the first user equipment accesses the target content backed up on the second data node.

Optionally, after the processing unit backs up the target content to the second data node, the apparatus is further configured to: receive a second access request sent by the second user equipment, the second access request including the The identifier of the second user equipment and the identifier of the target content to be accessed by the second user equipment, wherein the identifier of the target content to be accessed by the second user equipment is the same as the identifier of the target content to be accessed by the first user equipment; Judging whether the access to the target content carried by the second user equipment by the first data node and the second data node satisfies the constraint condition of communication quality; if not, backup the target content to the second Three data nodes, wherein the access to the target content by the second user equipment carried by the third data node satisfies the communication quality constraints; return the third data node to the second user equipment address, so that the second user equipment accesses the target content backed up by the second data node.

Optionally, after the processing unit backs up the target content to the second data node, the apparatus is further configured to: receive a second access request sent by the second user equipment, the second access request including the The identifier of the second user equipment and the identifier of the target content to be accessed by the second user equipment, wherein the identifier of the target content to be accessed by the second user equipment is the same as the identifier of the target content to be accessed by the first user equipment; Judging whether the access to the target content carried by the second user equipment by the first data node and the second data node satisfies the constraint condition of communication quality; if not, backup the target content to the second Three data nodes, wherein the access to the target content by the second user equipment carried by the third data node satisfies the communication quality constraints; return the third data node to the second user equipment address, so that the second user equipment accesses the target content backed up by the second data node.

Optionally, the constraints include: the access delay required by the first user equipment to access the target content in the first data node is not greater than a first threshold; and/or the first user equipment accesses the target content in the first data node Spectrum resources consumed by the target content are not greater than a second threshold; and/or a ratio between the number of backups of the target content and the number of user equipment requesting to access the target content is not greater than a third threshold.

Optionally, after backing up the target content to the second data node, the processor is further configured to: indicate that the second data node The node deletes the target content.

In a third aspect, the present application provides a server, including:

Communication interface: used to communicate with user equipment;

memory: used to store computer instructions;

Processor: communicated with the memory and the communication interface, used to execute the computer instructions in the memory, so as to execute the method described in the first aspect or any possible implementation of the first aspect when executing the computer instructions Methods.

In a fourth aspect, the present application provides a computer-readable storage medium, in which computer instructions are stored, and when the instructions are run on a computer, the computer executes the first aspect or any possible method of the first aspect. method in implementation.

In a fifth aspect, the present application provides a computer program product. When the computer program product runs on a computer, the computer executes the method in the first aspect or any possible implementation of the first aspect.

Description of drawings

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a flow chart of a content access method provided by an embodiment of the present application;

FIG. 3 is a flowchart of a content access method provided by an embodiment of the present application;

FIG. 4 is a flow chart of a content access method provided by an embodiment of the present application;

FIG. 5a is a path diagram of a user equipment accessing a data center provided by an embodiment of the present application;

FIG. 5b is a path diagram of a user equipment accessing a data center provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of an SDN structure provided by an embodiment of the present application;

FIG. 7 is a flow chart of a content backup method provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a content access device provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a server provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

The following introduces some concepts involved in this application:

Frequency slot (Frequency Slot, FS): is a frequency interval with a fixed frequency bandwidth.

Software Defined Network (SDN): It is a new innovative network architecture. By separating the control plane of network equipment from the data plane, it realizes flexible control of network traffic and makes the network more intelligent as a pipeline.

FIG. 1 shows a communication system 100 in an embodiment of the present application. The communication system may be a system based on an SDN network, but this embodiment of the present application does not limit it. The system includes user equipment 101 and server 102 and data nodes 103 . The server 102 is configured to: receive the read/write data request of the user equipment, and forward the read/write data of the user equipment to corresponding data nodes. Optionally, the server 102 may also determine the topology of the network and update the topology. The data node 103 is used to store data, and perform data read and write operations according to the request of the user equipment. It should be understood that intermediate devices, such as switches and routers, should also be included between the user equipment 101 and the server 102 . The user equipment involved in the embodiments of the present invention may be implemented in various manners, for example, a handheld device with a wireless function, a vehicle-mounted device, a wearable device, a computing device, and the like.

Based on the communication system 100 shown in FIG. 1, an embodiment of the present application provides a content access method. Referring to FIG. 2, the method includes:

In step S201, the server receives a first access request sent by a first user equipment, where the first access request includes an identifier of the first user equipment and an identifier of target content to be accessed by the first user equipment. Wherein, the identifier of the first user equipment may be a domain name of the user equipment, an address of the user equipment, or other information that can distinguish the user equipment from other user equipment.

Step S202, the server determines the first data node storing the target content according to the identifier of the target content.

The content distribution information is saved on the local disk of the server, where the content distribution information can be the mapping relationship between the content identifier and the identifier of the data node where the content is stored, and the server can determine the data node where the target content is stored according to the identifier of the target content .

In step S203, the server judges whether the access to the target content carried by the first user equipment by the first data node satisfies the constraint condition of communication quality.

The constraint condition may be a constraint condition of communication quality between the first data node and the first user equipment, or a constraint condition of communication quality of the first data node, or a constraint condition of communication quality of the entire communication system. Parameters constrained by the constraints include but are not limited to: communication delay, amount of occupied spectrum resources, bit error rate, error rate, transmission speed, number of visits carried by the first-use device, and the like.

Step S204, if the access to the target content by the first user equipment carried by the first data node does not meet the communication quality constraints, the server backs up the target content to a second data node, wherein, The access to the target content carried by the first user equipment by the second data node satisfies the constraint condition of communication quality.

The server may determine the second data node satisfying the communication constraint condition from the remaining data nodes except the first data node. When there are multiple data nodes that meet the communication constraints, one of the multiple data nodes can be selected as the second data node, or the data node closest to the first data node can be selected as the second data node, or select A data node with better communication quality with the first user equipment is used as the second data node.

Step S205, the server returns the address of the second data node to the first user equipment, so that the first user equipment accesses the target content backed up on the second data node.

In the embodiment of the present invention, the server judges whether the access to the target content carried by the first user equipment carried by the first data node satisfies the constraint condition of communication quality, and if not, the server passes the first access request and calculating the second data node that satisfies the constraint condition of communication quality based on the obtained content topology information, and backing up the target content to the second data node, so that the first user equipment can access the Target content, realize the migration of content, and improve the communication quality of network equipment. In addition, the above solution can ensure that user equipment accesses content with high communication quality in real time. For example, at the first moment, the first data node or the second data node bears the first user equipment's access to the target content to satisfy the communication However, as the communication status of data nodes or routing nodes in the network changes, when the first user equipment accesses the target content again at the second moment, the first data node and the second data node carry the first The user equipment's access to the target content does not meet the communication quality constraints, and the server may back up the target content to another data node, and the data node bears that the first user equipment's access to the target content meets the requirements. Constraints on communication quality.

After the content to be accessed by the user equipment has been backed up to a data node, the server can continue to back up the content to other data nodes according to the access requirements of the user equipment, so as to meet the access requirements of the user equipment. For example, after backing up the target content to the second data node in step S204, as shown in FIG. 3 , further includes:

Step S301, the server receives a second access request sent by the second user equipment, wherein the identifier of the target content to be accessed by the second user equipment included in the second access request is the same as the identifier of the target content to be accessed by the first user equipment .

In step S302, the server judges whether the access to the target content carried by the second user equipment by the first data node and the second data node satisfies the constraint condition of communication quality.

Step S303, if neither the access to the target content by the second user equipment carried by the first data node nor the second data node satisfies the constraint condition of communication quality, the server backs up the target content to a place that satisfies the first A third data node that is restricted by the communication quality of the user equipment's access to the target content, and return the address of the third data node to the second user equipment, so that the second user equipment accesses the target content The target content backed up by the third data node.

In the method provided by the embodiment of the present invention, after it is determined that the first user equipment's access to the target content carried by the first data node does not meet the communication quality constraints, the content to be accessed by the user equipment is not backed up to One data node is enough. When the user equipment access request is received in real time, and the data node backed up by the target content does not meet the communication quality requirements, it must be backed up until the data node backed up by the target content carries the first user equipment to the Access to the target content does not meet the constraints of communication quality.

Optionally, the constraints in step S302 can be implemented in multiple ways, including but not limited to the following:

Condition a: The access delay required by the first user equipment to access the target content in the first data node is not greater than a first threshold. The first threshold may be a preset value, or the server may update the first threshold according to the current network status or the priority of the user equipment.

The server can estimate the access delay required by the first user equipment to access the first data node through the topology of the network. For example, the delay can be calculated by the following formula:

Lat(u,d)=dis(u,d)/s+h(u,d)×LAT _h

Among them, Lat(u,d) is the access delay required by the first user equipment to access the first data node, dis(u,d) and h(u,d) are the distance and hop distance of the path from the user equipment to the data node, respectively. , s is the propagation speed of light in the fiber, and LAT _h is the average processing delay of each hop node.

There are many ways for the server to obtain the topology of the network, including but not limited to: first, the topology of the network is stored in the local disk of the server, and the server directly invokes it from the local disk after receiving the access request. Second, the topology of the network is stored in another server, and the server sends a request to the external control server, and the external server returns content release information and network topology to the server. Third, the server detects and generates the topology of the network in real time.

Condition b: Spectrum resources consumed by the first user equipment to access the target content in the first data node are not greater than a second threshold.

The spectrum resources may be the spectrum resources occupied by the first data node when the first user equipment accesses the first data node. When too many spectrum resources are occupied by the first user, it will affect the first data node to bear the access of other user equipments. The spectrum resource may also be the spectrum resource occupied by the entire network when the first user equipment accesses the first data node. For example, the spectrum resource may be calculated by the following formula:

Among them, FSO _c is the spectrum resource consumed by the first user equipment to access the target content, b _r is the bandwidth occupied by the first user equipment to access, C(dis(r) _min ) indicates that the highest order modulation is adopted when the path length is dis The data rate for one frequency slot in the format.

Condition c, the ratio between the number of backups of the target content and the number of user devices requesting to access the target content is not greater than the third threshold.

The number of backups of the target content represents the number of data nodes containing the target content. If the ratio between the number of backups of the target content and the number of user devices requesting access to the target content is too large, it indicates that each data node storing the target content may be overloaded. If there are too many visits, the quality of the visits of the first user equipment cannot be guaranteed.

A possible calculation method of the ratio between the number of backups of the target content and the number of user access requests to the target content is:

Ba(c)＝Ng(R _c /∑ _c∈C R _c )×(n _total /n _c )

Among them, Ba(c) is the ratio between the number of backups of the target content and the number of user access requests to the target content, N is the sensitivity coefficient, R _c is the number of backups of the current target content, and n _total is the detection unit time The total number of user requests, n _c is the number of access requests to the target content per detection unit time.

It should be understood that the constraint conditions may be a combination of two of the above conditions a, b, and c, or a combination of the three conditions of a, b, and c. Multiple conditions can be combined in the following two ways: Mode 1. Only when multiple conditions are satisfied at the same time can the constraint conditions be satisfied. For example, the constraint condition is a combination of conditions a and b, and the constraint condition is satisfied only when conditions a and b are satisfied at the same time.

Method 2: Carry out weighted summation of the parameters representing the communication quality concerned by multiple conditions, and measure whether the communication quality meets the requirements according to the weighted sum.

For example, the access delay required by the first user equipment to access the target content in the first data node, the number of backups of the target content, and the number of user access requests to the target content can be combined to determine whether the communication quality meets the requirements. The following formula is the weighted sum of the above two parameters:

Among them, Trigger is the weighted sum, Lat(ri) is the access delay of the user equipment to access the data node, Lat _TL is the propagation delay, _n is the number of access requests for the target content, and Ba(c) is the number of backups representing the target content and the number of user access requests for the target content.

If the weighted sum is not greater than the fifth threshold, it means that the data node meets the communication quality requirement, otherwise, it does not meet the communication quality requirement.

After the content to be accessed by the user equipment has been backed up to a data node, the server can synchronously back up the content to other data nodes according to the access requirements of the user equipment, so as to meet the access requirements of the user equipment. For example, after the target content is backed up to the second data node in step S204, as shown in FIG. 4 , further includes:

Step S401, the server receives the third access request sent by the third user equipment and the fourth access request sent by the fourth user equipment, the third access request includes the identifier of the third user equipment and the identifier of the target content, the The fourth access request includes the identifier of the fourth user equipment and the identifier of the target content.

Step S402, the server judges whether the access to the target content carried by the third user equipment or the fourth user equipment by the first data node satisfies the constraint condition of communication quality, and judges whether the second data node carries the second data node. Whether the access of the target content by the third user equipment or the fourth user equipment satisfies the constraint condition of communication quality, if not, determine the third data node and the fourth data node, and the third data node carries the Both the access of the third user equipment to the target content and the access of the fourth user equipment to the target content carried by the fourth data node meet the constraint conditions of communication quality, and the target content of the first data node The difference between the time delay required for backing up to the third data node and the time delay required for backing up the target content of the first data node to the fourth data node is less than a fourth threshold.

Step S403, the server backs up the target content to the third data node and the fourth data node; returns the address of the third data node to the third user equipment, so that the third user equipment can access the third data node The target content backed up by three data nodes, and returning the address of the fourth data node to the fourth user equipment, so that the fourth user equipment accesses the target content backed up by the fourth data node.

In the method provided by the embodiment of the present invention, when determining the third data node and the fourth data node, it is not only determined that the third data node bears the third user equipment's access to the target content and the Four data nodes bear the fourth user equipment's access to the target content to meet the constraints of communication quality, and it is also necessary to determine the time delay required for the backup of the target content of the first data node to the third data node and the time delay required by the first data node The time delay difference required for backing up the target content of the target content to the fourth data node is less than the fourth threshold, and when the time delay difference is less than the fourth threshold, the third data node and the fourth data node meet the synchronous backup condition.

In order to better understand the content access method of the embodiment of the present application, an application example of the technical solution of the embodiment of the present application is introduced below, referring to FIG. 5a and FIG. 5b.

Consider that in the optical network of the data center, user requests and applications can be distributed in data centers in different geographic locations. When users in area ₂ centrally request access to content _A in data center D1 and content B in data center D2, the server receives the user's access request through the communication interface, the distribution information of the content stored in the server's local disk, and the obtained network topology structure, the controller in the server can collect traffic information according to user requests, and the server can calculate the path of traffic forwarding according to the traffic information and network topology, and send the path to the user. The user accesses content A and content B according to the path. The access path is shown in Figure 5a, but data centers D ₁ and D ₂ are far away from users in area 2. In order to meet the needs of users, a very long link needs to be established. Therefore, in order to meet the communication quality, the content needs to be adjusted according to the user's request.

The adjusted path is shown in Figure 5b, which expands the application program interface for content management in the communication of the server. Among them, the communication interface of the server includes southbound and northbound interfaces, and the data transmission process in the process of network and content adjustment is shown in Figure 6 As shown, when users in area ₂ centrally request access to content _A in data center D1 and content B in data center D2, the server sends traffic information in the network to the network controller in the server through the southbound interface, and the content The identification of the traffic is sent to the content controller. The network controller includes the traffic forwarding path and link status information. The network controller calculates whether the traffic forwarding path satisfies the communication quality constraints based on the received traffic information and link status information. If If it is not satisfied, the forwarding path needs to be recalculated. After receiving the identification of the target content, the content controller of the server queries the core controller of the server through the northbound interface to query the level of the content stored in the server, the maximum number of backups, the update frequency, and the last update time Attribute information such as content and information such as the data center where the target content is located, the number of current backups, and updated data nodes are queried through the distribution information of the content. Based on these information, it is calculated whether data centers D ₁ and D ₂ can carry the content when users access content A and B. Communication quality requirements, that is, whether the requirements of access delay, consumed spectrum resources, and the ratio of the number of content backups to the number of user access requests are met. If the communication quality requirements are not met, the content controller adjusts the content through the following steps, see Fig. 7:

Step S701, calculating the candidate set C ₁ of data centers satisfying the user access delay except data centers D ₁ and D ₂ ;

Step S702, by verifying that the delay difference between backing up content _A from data center D1 to any _two data centers in the set meets the threshold requirement and backing up content B from data center D2 to these two data centers respectively The difference in time delay satisfies the threshold requirement, and a new set of candidate data centers C ₂ is obtained.

Step S703. Calculate the value of the spectrum resource FSO _c consumed by the user to visit each data center in the candidate data center set _C2 , and arrange the values in ascending order to obtain the candidate data center set _C3 .

Step S704, back up content A to the set of candidate data centers C ₃ and back up content B to the set of candidate data centers C ₃ , and check whether the load will be too high by the following formula:

Among them, AV _c is the average load value added by the data center, C _BPSK is the rate capacity of one frequency slot when the low-order modulation method BPSK is adopted, and N _c is the backup number of content c.

If the AV _c exceeds the data center receivable threshold, the content cannot be backed up to the data center, and step S703 is executed; otherwise, step S705 is performed.

Step S705, according to the candidate data center set D ₃ determined in step S704, back up content A and content B.

The network controller uploads the updated traffic path and link status to the core controller through the northbound interface, and the content controller uploads the updated content to the core controller through the northbound interface. The core controller updates the topology through the received update information. The structure is updated. The server sends the address of data center _D3 to the user in area 2, and the user accesses content A and content B according to the address of data center _D3 .

The embodiment of the present invention also provides a content access device, see Figure 8, the device includes:

A receiving unit 801, configured to receive a first access request sent by a first user equipment, where the first access request includes an identifier of the first user equipment and an identifier of target content to be accessed by the first user equipment;

The processing unit 802 is configured to determine, according to the identifier of the target content, a first data node that stores the target content, and determine whether the first data node bears the access to the target content by the first user equipment. Satisfy the constraint condition of communication quality, if not, back up the target content to a second data node, wherein the access to the target content carried by the first user equipment by the second data node satisfies the Restrictions;

The sending unit 803 is configured to return the address of the second data node to the first user equipment, so that the first user equipment accesses the target content backed up on the second data node.

Optionally, after the processing unit backs up the target content to the second data node, the apparatus is further configured to: receive a second access request sent by the second user equipment, the second access request including the The identifier of the second user equipment and the identifier of the target content to be accessed by the second user equipment, wherein the identifier of the target content to be accessed by the second user equipment is the same as the identifier of the target content to be accessed by the first user equipment; Judging whether the access to the target content carried by the second user equipment by the first data node and the second data node satisfies the constraint condition of communication quality; if not, backup the target content to the second Three data nodes, wherein the access to the target content by the second user equipment carried by the third data node satisfies the communication quality constraints; return the third data node to the second user equipment address, so that the second user equipment accesses the target content backed up by the second data node.

Optionally, after the processing unit backs up the target content to the second data node, the apparatus is further configured to: receive a second access request sent by the second user equipment, the second access request including the The identifier of the second user equipment and the identifier of the target content to be accessed by the second user equipment, wherein the identifier of the target content to be accessed by the second user equipment is the same as the identifier of the target content to be accessed by the first user equipment; Judging whether the access to the target content carried by the second user equipment by the first data node and the second data node satisfies the constraint condition of communication quality; if not, backup the target content to the second Three data nodes, wherein the access to the target content by the second user equipment carried by the third data node satisfies the communication quality constraints; return the third data node to the second user equipment address, so that the second user equipment accesses the target content backed up by the second data node.

Optionally, the constraints include: the access delay required by the first user equipment to access the target content in the first data node is not greater than a first threshold; and/or the first user equipment accesses the target content in the first data node Spectrum resources consumed by the target content are not greater than a second threshold; and/or a ratio between the number of backups of the target content and the number of user equipment requesting to access the target content is not greater than a third threshold.

Optionally, after backing up the target content to the second data node, the processor is further configured to: indicate that the second data node The node deletes the target content.

The implementation manner of each functional unit of the above-mentioned content access device can be realized by referring to the steps in a content access method shown in FIG. 2 .

The embodiment of the present invention also provides a server, see Figure 9, the server includes:

A communication interface 901, configured to communicate with network devices;

memory 902 for storing computer instructions;

A processor 903, connected in communication with the memory and the communication interface, configured to execute the computer instructions in the memory, so as to execute the first aspect or any possible implementation of the first aspect when executing the computer instructions method.

The implementation of each functional module of the above server can be realized by referring to the steps in a web page jumping method described in FIG. 2 .

An embodiment of the present invention also provides a computer-readable storage medium, which is used for storing computer instructions, and when the instructions are run on the computer, the computer executes the first aspect or any possible implementation of the first aspect. Methods.

An embodiment of the present invention also provides a computer program product, which is configured to, when running on a computer, cause the computer to execute the method in the first aspect or any possible implementation of the first aspect.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (12)

1. a kind of contents access method, which is characterized in that the described method includes:

The first access request of the first user equipment transmission is received, first access request includes first user equipment The mark of mark and the first user equipment object content to be accessed；

The first back end for saving the object content is determined according to the mark of the object content；

Judge to carry access of first user equipment to the object content by first back end, if meet logical Believe the constraint condition of quality；

If not satisfied, the object content is then backuped to the second back end, wherein carry institute by second back end It states the first user equipment and the constraint condition is met to the access of the object content；

The address of second back end is returned to first user equipment, so that described in first user equipment access The object content backed up on second back end.

2. the method according to claim 1, wherein by the object content backup to the second back end it Afterwards, further includes:

The second access request that second user equipment is sent is received, second access request includes the second user equipment The mark of mark and the second user equipment object content to be accessed, wherein the second user equipment mesh to be accessed The mark for marking content is identical as the mark for the object content that the first user equipment to be accessed；

Judge to be carried the second user equipment by first back end and the second back end to the object content Access, if meet the constraint condition of communication quality；

If being all unsatisfactory for, the object content is backuped into third back end, wherein carried by the third back end The second user equipment meets the constraint condition of the communication quality to the access of the object content；

The address of the third back end is returned to the second user equipment, so that described in second user equipment access The object content of second back end backup.

3. the method according to claim 1, wherein by the object content backup to the second back end it Afterwards, further includes:

The third access request that third user equipment is sent and the 4th access request that fourth user equipment is sent are received, it is described Third access request includes the mark of third user equipment and the mark of the object content, and the 4th access request includes The mark of the fourth user equipment and the mark of the object content；

Judge to carry the visit of the third user equipment or four user equipmenies to the object content by first back end It asks, if meet the constraint condition of communication quality, and judge that the second back end carries the third user equipment or the 4th Access of the user equipment to the object content, if meet the constraint condition of communication quality；

If being all unsatisfactory for, it is determined that third back end and the 4th back end, as described in third back end carrying Third user equipment carries the fourth user equipment pair to the access of the object content and by the 4th back end The access of the object content all meets the constraint condition of communication quality, and the object content of the first back end backups to third The difference of time delay needed for the object content of time delay needed for back end and the first back end backups to the 4th back end is less than the Four threshold values；

The object content is backuped into third back end and the 4th back end；

The address of the third back end is returned to the third user equipment, so that described in the third user equipment access The object content of third back end backup, and return to the fourth user equipment ground of the 4th back end Location, so that the fourth user equipment accesses the object content of the 4th back end backup.

4. method according to claim 1 to 3, which is characterized in that the constraint condition includes:

Access time delay needed for object content described in first the first back end of user equipment access is not more than first threshold； And/or

Frequency spectrum resource consumed by object content described in first the first back end of user equipment access is not more than second threshold； And/or

Ratio between the backup number of the object content and the user device quantity for requesting access to object content is not more than third threshold Value.

5. method according to claim 1 to 3, which is characterized in that the object content is being backuped to second After back end, further includes:

After the not visited time of the object content on the second back end is more than the 5th threshold value, second data section is indicated Object content described in point deletion.

6. a kind of content access device, which is characterized in that described device includes:

Receiving unit, for receiving the first access request of the first user equipment transmission, first access request includes described The mark of the mark of first user equipment and the first user equipment object content to be accessed；

Processing unit determines the first back end for saving the object content for the mark according to the object content, with And judge to carry access of first user equipment to the object content by first back end, if meet communication The constraint condition of quality, if not satisfied, the object content is then backuped to the second back end, wherein counted by described second First user equipment is carried according to node, and the constraint condition is met to the access of the object content；

Transmission unit, for returning to the address of second back end to first user equipment, so that described first uses Family equipment accesses the object content backed up on second back end.

7. device according to claim 6, which is characterized in that the object content is being backuped to by the processing unit After two back end,

The receiving unit is also used to: after the object content is backuped to the second back end by the processing unit, being connect Receive the second access request that second user equipment is sent, second access request include the mark of the second user equipment with And the mark of the second user equipment object content to be accessed, wherein the second user equipment object content to be accessed Mark it is identical as the mark for the object content that the first user equipment to be accessed；

The processing unit is also used to: judging that carrying the second user by first back end and the second back end sets The standby access to the object content, if meet the constraint condition of communication quality, if being all unsatisfactory for, by the object content Backup to third back end, wherein the second user equipment is carried to the object content by the third back end Access meet the constraint condition of the communication quality；

The transmission unit is also used to, and Xiang Suoshu second user equipment returns to the address of the third back end, so that described Second user equipment accesses the object content of the second back end backup.

8. device according to claim 6, which is characterized in that the object content is backuped to second by the processing unit After back end,

The receiving unit is also used to: receiving the second access request that second user equipment is sent, the second access request packet The mark of the second user equipment and the mark of the second user equipment object content to be accessed are included, wherein described The mark of the two user equipmenies object content to be accessed is identical as the mark for the object content that the first user equipment to be accessed；

The processing unit is also used to: judging that carrying the second user by first back end and the second back end sets The standby access to the object content, if meet the constraint condition of communication quality, if being all unsatisfactory for, by the object content Backup to third back end, wherein the second user equipment is carried to the object content by the third back end Access meet the constraint condition of the communication quality；

The transmission unit is also used to: Xiang Suoshu second user equipment returns to the address of the third back end, so that described Second user equipment accesses the object content of the second back end backup.

9. according to device described in claim 6-8 any one, which is characterized in that the constraint condition includes:

Access time delay needed for object content described in first the first back end of user equipment access is not more than first threshold； And/or

Frequency spectrum resource consumed by object content described in first the first back end of user equipment access is not more than second threshold； And/or

Ratio between the backup number of the object content and the user device quantity for requesting access to object content is not more than third threshold Value.

10. according to device described in claim 6-8 any one, which is characterized in that processing unit is also used to:

After the not visited time of the object content on the second back end is more than the 5th threshold value, second data section is indicated Object content described in point deletion.

11. a kind of calculation server characterized by comprising

Memory, for storing computer instruction；

Communication interface, for being communicated with the network equipment；

Processor is communicated to connect with the memory and the communication interface, for executing the computer in the memory Instruction, to execute such as method described in any one of claim 1 to 5 when executing the computer instruction.

12. a kind of computer readable storage medium, which is characterized in that it is stored with computer instruction in the readable storage medium storing program for executing, When described instruction is run on computers, so that computer executes such as method described in any one of claim 1 to 5.