CN109787921B - CDN bandwidth scheduling method, acquisition and scheduling server and storage medium - Google Patents
CDN bandwidth scheduling method, acquisition and scheduling server and storage medium Download PDFInfo
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Abstract
The embodiment of the invention relates to the technical field of internet and discloses a CDN bandwidth scheduling method, a collection and scheduling server and a storage medium. The method comprises the following steps: acquiring the real-time total bandwidth of the CDN; the CDN is constructed in a preset network and a standby network, and the real-time total bandwidth comprises: presetting real-time bandwidth of a network and real-time bandwidth of a standby network; calculating to obtain a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of the preset network and the principle of preferentially using the bandwidth of the preset network; the bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on a preset network and a standby network; and issuing the new bandwidth allocation ratio to an edge node of the CDN, so that the edge node of the CDN allocates bandwidths in corresponding proportions to a preset network and a standby network according to the new bandwidth allocation ratio. The embodiment of the invention realizes the automatic allocation of the CDN bandwidth among different networks, thereby being beneficial to reducing the cost and improving the CDN service quality.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a CDN bandwidth scheduling method, a collection and scheduling server and a storage medium.
Background
In a Content Delivery Network (CDN), node servers are configured in various parts of the Network, and an intelligent virtual Network is constructed on the basis of the internet to deliver Content of a website to a Network edge closest to a user, so that the user can obtain required Content nearby. With the rapid development of the internet, applications such as 4K high-definition videos, interactive games, ARs, VRs and the like are continuously emerging, and the demand for bandwidth is increased.
The inventors found that the related art has at least the following problems: the CDN node server is generally built on an operator backbone network, and the rapid development of services enables the internal bandwidth consumption generated when a CDN edge node accesses a transit node to increase continuously, which is costly. In addition, the national operator's pattern of south telecommunication, north netcom' causes resource distribution imbalance, for example, telecommunication transit nodes are mostly concentrated in the south, netcom transit nodes are mostly concentrated in the north, and nodes need to pass through multi-hop transit from a machine room to an operator backbone network, resulting in long delay of edge node transit nodes. Therefore, the single operator network is not favorable for the further development of the CDN service.
Disclosure of Invention
The embodiment of the invention aims to provide a CDN bandwidth scheduling method, a collection and scheduling server and a storage medium, which are beneficial to reducing the cost and improving the CDN service quality by realizing the automatic allocation of CDN bandwidth among different networks.
In order to solve the above technical problem, an embodiment of the present invention provides a CDN bandwidth scheduling method, which is applied to a scheduling server, and includes:
acquiring the real-time total bandwidth of the CDN; the CDN is constructed in a preset network and a standby network, and the real-time total bandwidth includes: presetting real-time bandwidth of a network and real-time bandwidth of a standby network;
calculating to obtain a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of the preset network and a principle of preferentially using the bandwidth of the preset network; the bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on the preset network and the standby network;
and issuing the new bandwidth allocation ratio to an edge node of the CDN, so that the edge node of the CDN allocates bandwidths in corresponding proportions to the preset network and the standby network according to the new bandwidth allocation ratio.
The embodiment of the invention also provides a CDN bandwidth scheduling method, which comprises the following steps:
collecting the real-time bandwidth of a preset network;
sending the real-time bandwidth of the preset network to a CDN scheduling server, so that the CDN scheduling server calculates a new bandwidth allocation ratio according to the real-time bandwidth of the preset network; the bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on the preset network and the standby network.
The embodiment of the invention also provides a CDN bandwidth scheduling method, which comprises the following steps:
receiving a bandwidth allocation ratio; the bandwidth allocation ratio is issued by a scheduling server in the CDN bandwidth scheduling method;
setting a preset field value of an IP data packet according to the bandwidth allocation ratio;
and determining to adopt a preset network or a standby network of the CDN to transmit the IP data packet according to the preset field value.
The embodiment of the present invention further provides a scheduling server, including: the CDN bandwidth scheduling system comprises a memory storing a computer program and a processor running the computer program to implement the CDN bandwidth scheduling method as described above.
An embodiment of the present invention further provides an acquisition server, including: a memory storing a computer program and a processor running the computer program to implement the CDN bandwidth scheduling method as described above.
Embodiments of the present invention also provide a storage medium for storing a computer readable program, where the computer readable program is used for a computer to execute the CDN bandwidth scheduling method as described above.
Compared with the prior art, the embodiment of the invention has the advantages that the CDN bandwidth (namely, internal flow) can be transmitted through the lines of the preset network and the standby network by simultaneously constructing the nodes in the CDN on the preset network and the standby network. The method comprises the steps of obtaining a CDN real-time total bandwidth, calculating a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of a preset network and the principle of preferentially using the bandwidth of the preset network, and then issuing the new bandwidth allocation ratio to the CDN, so that the CDN allocates bandwidths in corresponding proportions to the preset network and a standby network according to the new bandwidth allocation ratio, and automatic scheduling of the CDN bandwidth between the preset network and the standby network is achieved. On the basis, a line with more cost benefit and quality service advantage can be used as a preset network, so that the CDN service cost is reduced, and the service quality is improved.
As an embodiment, the obtaining of the CDN real-time total bandwidth specifically includes:
receiving the real-time bandwidth of the preset network;
and calculating to obtain the real-time total bandwidth according to the real-time bandwidth of the preset network and the bandwidth allocation ratio corresponding to the real-time bandwidth of the preset network.
As an embodiment, the calculating a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of the preset network, and the principle of preferentially using the bandwidth of the preset network specifically includes:
and determining whether the real-time bandwidth of the preset network is greater than the service bandwidth, and if so, calculating to obtain the new bandwidth allocation ratio according to a preset formula.
As an embodiment, the preset formula is:
P＝T：(Z-T)；
wherein, P is the new bandwidth allocation ratio, Z is the real-time total bandwidth, and T is the service bandwidth of the preset network. Therefore, the data can be transmitted by fully utilizing the preset network, and greater economic benefit can be brought.
As an embodiment, if the real-time bandwidth of the preset network is less than or equal to the service bandwidth, the preset allocation value is used as the new bandwidth allocation ratio.
As an embodiment, a ratio of the service bandwidth of the predetermined network to the planned bandwidth of the predetermined network is greater than 75% and less than 85%. Therefore, the real-time bandwidth of the preset network can be prevented from exceeding the planned bandwidth when the real-time total bandwidth suddenly increases, and the service quality of the preset network is guaranteed.
As an embodiment, further comprising:
and monitoring working parameters of the preset network and the standby network in real time.
As an embodiment, the operating parameter includes one or any combination of the following:
bandwidth of transmission lines of the preset network and the standby network;
the preset network and the standby network respectively have transmission bandwidth of one of the following service types or any combination thereof:
on-demand broadcasting, live broadcasting and webpage data;
the transmission bandwidth of the domain name granularity of each of the preset network and the standby network;
the download rate, the download success rate and the download exception of the transmission lines of the preset network and the standby network are respectively used. Therefore, data are provided for capacity expansion and maintenance of the preset network, and continuous optimization of service quality is facilitated.
As an embodiment, the bandwidth allocation ratio comprises: an inflow distribution ratio and an outflow distribution ratio;
the receiving bandwidth allocation ratio is specifically:
an edge node of the CDN receives the bandwidth allocation ratio;
setting a preset field value of an IP data packet according to the bandwidth allocation ratio; determining to adopt a preset network or a standby network of the CDN to transmit the IP data packet according to the preset field value, which specifically comprises the following steps:
the edge node sets a preset field value of an outgoing IP data packet according to the outgoing distribution ratio, and network equipment of the CDN determines to adopt a preset network or a standby network of the CDN to transmit the outgoing IP data packet according to the preset field value of the outgoing IP data packet;
the edge node sends the received inflow distribution ratio to a transit node of the CDN, the transit node sets a preset field value of an inflow IP data packet according to the inflow distribution ratio, and the network equipment determines to adopt a preset network or a standby network of the CDN to transmit the inflow IP data packet according to the preset field value of the inflow IP data packet.
As an embodiment, the preset field value is a differentiated services code point value.
Drawings
Fig. 1 is a flowchart of a CDN bandwidth scheduling method according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a CDN system according to an embodiment of the present invention;
FIG. 3 is a flowchart of a CDN bandwidth scheduling method according to a second embodiment of the present invention;
FIG. 4 is a flowchart of a CDN bandwidth scheduling method according to a third embodiment of the present invention;
FIG. 5 is a flowchart of a CDN bandwidth scheduling method according to a fourth embodiment of the present invention;
FIG. 6 is a schematic diagram of the IP protocol packet TOS format;
fig. 7 is a schematic structural diagram of a scheduling server according to a fifth embodiment of the present invention;
fig. 8 is a schematic structural diagram of an acquisition server according to a sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a CDN bandwidth scheduling method, which is applied to the scheduling server 109 in the CDN system shown in fig. 2. The CDN system is constructed on a default network 100 and a standby network 101. The default network 100 includes, but is not limited to, a network (e.g., a self-built cloud network) built by the CDN service provider itself, a preferred operator network, and the like. The network built by the CDN service provider may be more cost effective and have better quality of service, e.g., more balanced resource distribution and lower latency, than the operator network. The default network may of course be the operator network with better cost and quality of service. Currently, an operator network may generally be used as a backup network, which may have a relatively higher cost and a larger delay due to unbalanced resource distribution compared to a default network. The implementation manner of the preset network and the operator network is not particularly limited in this embodiment. The CDN system further includes: a plurality of edge nodes 102, a transit node 103, a first node switch 104, a second node switch 105, a first back-source switch 106, a second back-source switch 107, and an acquisition server 108. For simplicity of illustration, one edge node 102 and one transit node 103 are shown in fig. 2, respectively. The CDN bandwidth scheduling method of the present embodiment is applied to the scheduling server 109.
Referring to fig. 1, the CDN bandwidth scheduling method of the present embodiment includes steps 101 to 103.
Step 101: and acquiring the CDN real-time total bandwidth.
Wherein the real-time total bandwidth comprises: the real-time bandwidth of the network and the real-time bandwidth of the standby network are preset. The real-time total bandwidth of the CDN can be divided into an ingress total bandwidth and an egress total bandwidth. The total bandwidth of the ingress refers to, for example, the bandwidth flowing from the transit node to the edge node, and the total bandwidth of the egress refers to, for example, the bandwidth flowing from the edge node to the transit node. In this embodiment, the real-time total bandwidth includes an inflow total bandwidth and an outflow total bandwidth, but is not limited thereto, and in practical applications, the real-time total bandwidth may also be the inflow total bandwidth or the outflow total bandwidth. The preset network and the standby network may respectively include a plurality of transmission lines, at this time, each transmission line of the preset network needs to be respectively collected to obtain a real-time bandwidth of each transmission line, and the plurality of transmission lines of the standby network also need to be respectively collected to obtain a real-time bandwidth of each transmission line, where each transmission line of the preset network may correspond to each transmission line of the standby network one to one, but is not limited thereto. Similar to the CDN real-time total bandwidth, the real-time bandwidths of the preset network and the standby network are also divided into an ingress bandwidth and an egress bandwidth. For simplicity, the default network and the standby network in this embodiment are described by taking one transmission line as an example.
The step 101 of obtaining the CDN real-time total bandwidth specifically includes: and receiving the real-time bandwidth of the preset network, and calculating to obtain the real-time total bandwidth according to the real-time bandwidth of the preset network and the bandwidth allocation ratio corresponding to the real-time bandwidth of the preset network. The bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on the preset network and the standby network. The real-time bandwidth of the preset network may be acquired by the acquisition server 108, as shown in fig. 2, the acquisition server 108 may acquire the real-time bandwidth of the preset network 100 by acquiring port data of the first back-source switch 106 and the second back-source switch 107. The acquisition server 108 may periodically acquire the real-time bandwidth of the predetermined network, for example, acquiring the real-time bandwidth of one predetermined network every minute. In some examples, the acquisition frequency may also be set according to a fluctuation condition of the bandwidth in real time, for example, a higher bandwidth acquisition frequency is set in a period when the bandwidth fluctuation is larger, and a lower bandwidth acquisition frequency is set in a period when the bandwidth fluctuation is smaller and smoother, which is not particularly limited in this embodiment. The collection server 108 reports the collected real-time bandwidth of the preset network 100 to the scheduling server 109 in real time. In this embodiment, the bandwidth between the preset network and the standby network is allocated according to a certain proportion, that is, the real-time bandwidth of the preset network acquired each time corresponds to a specific bandwidth allocation ratio. For example, the default bandwidth allocation ratio between the preset network and the standby network is 8:2, and at this time, the bandwidth allocated to the preset network in the acquired real-time total bandwidth accounts for 80%. Therefore, the scheduling server 109 can calculate the CDN real-time total bandwidth according to the received real-time bandwidth of the preset network and the bandwidth allocation ratio corresponding to the real-time bandwidth, that is, the CDN real-time total bandwidth is equal to a quotient of the real-time bandwidth of the preset network and the corresponding bandwidth allocation ratio. The embodiment does not specifically limit the manner of acquiring the CDN real-time total bandwidth. In some examples, the acquisition server may further acquire the real-time bandwidth of the standby network and report the acquired real-time bandwidth to the scheduling server, and similarly, the scheduling server may calculate the real-time total bandwidth of the CDN according to the real-time bandwidth of the standby network and the bandwidth allocation ratio corresponding to the real-time bandwidth.
Step 102: and calculating to obtain a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of the preset network and the principle of preferentially using the bandwidth of the preset network.
The calculation mode of the new bandwidth allocation ratio can be determined according to the difference between the service bandwidth of the preset network and the service bandwidth of the standby network. Assuming that the ratio of the service bandwidth of the preset network to the service bandwidth of the standby network is greater than 50% and less than 100%, that is, the difference between the service bandwidth of the preset network and the service bandwidth of the standby network is not too large, a corresponding relationship between the real-time total bandwidth and the new bandwidth allocation ratio may be established in advance, the corresponding relationship may be stored in a table manner shown in table one, for example, and then the corresponding new bandwidth allocation ratio may be obtained by looking up the table according to the real-time total bandwidth.
The present embodiment does not specifically limit the calculation manner of the new bandwidth allocation ratio. Wherein the new bandwidth allocation ratio may be divided into an ingress allocation ratio and an egress allocation ratio. The service bandwidth of the default network can also be divided into an ingress service bandwidth and an egress service bandwidth. The inflow distribution ratio is calculated according to the inflow total bandwidth and the inflow service bandwidth of the preset network, and the outflow distribution ratio is calculated according to the outflow total bandwidth and the outflow service bandwidth of the preset network. It should be noted that, because the preset network corresponds to a preferred network with better cost, performance, and the like, when determining a new bandwidth allocation ratio according to the real-time total bandwidth and the service bandwidth of the preset network, the principle of preferentially using the bandwidth of the preset network is based on, that is, on the basis of fully utilizing the service bandwidth of the preset network, the part exceeding the service bandwidth of the preset network is switched to the standby network.
Step 103: and issuing the new bandwidth allocation ratio to an edge node of the CDN, so that the edge node of the CDN allocates bandwidths in corresponding proportions to a preset network and a standby network according to the new bandwidth allocation ratio.
The scheduling server 109 issues the calculated new bandwidth allocation ratio to each edge node in the CDN, so that each edge node allocates bandwidths in corresponding proportions to the preset network and the standby network according to the new bandwidth allocation ratio. In practical applications, the acquisition server 108 and the dispatch server 109 may be different servers, both connected back to the source switch, or the acquisition server 108 and the dispatch server 109 may be the same server based on cost considerations, as shown in fig. 2. The bandwidth allocation ratio is sent to the first node switch 104 and the second node switch 105 through the first back-source switch 106, and then sent to the edge node under each node switch. However, not limited to this, a scheduling server may be respectively configured for each edge node, and at this time, the bandwidth allocation ratio may be directly issued to the corresponding edge node.
When the preset network and the standby network comprise a plurality of transmission lines, the real-time bandwidth of each transmission line needs to be acquired respectively, the bandwidth allocation ratio corresponding to each transmission line is obtained through calculation, and the bandwidth allocation ratio corresponding to each transmission line is issued to the edge node, so that the edge node can perform bandwidth allocation according to the bandwidth allocation ratio of the transmission line.
Compared with the prior art, the embodiment simultaneously constructs the CDN in the preset network and the standby network, calculates a new bandwidth allocation ratio according to the real-time total bandwidth of the CDN, the service bandwidth of the preset network and the principle that the service bandwidth of the preset network is preferentially used, and controls the bandwidth allocation of the total bandwidth of the CDN in the preset network and the standby network by updating the bandwidth allocation ratio, so that the preset network preferentially undertakes data transmission, the data transmission on the standby network is reduced, the cost is reduced, and the transmission quality is improved.
The present invention relates to a CDN bandwidth scheduling method, which is substantially the same as the first embodiment, and mainly differs in that in the first embodiment, a new bandwidth allocation ratio is obtained by table lookup, and in the present embodiment, a new bandwidth allocation ratio is obtained by real-time calculation using a preset formula, so that the bandwidth allocation ratio can be adjusted more flexibly.
Referring to fig. 3, the CDN bandwidth scheduling method of the present embodiment includes steps 301 to 305.
Step 301: and acquiring the CDN real-time total bandwidth.
Step 301 is the same as step 101 of the first embodiment, and is not described herein again.
Step 302: determining whether the real-time bandwidth of the predetermined network is greater than the service bandwidth, if so, performing step 303, and if not, performing step 304.
The ratio of the service bandwidth of the predetermined network to the planned bandwidth of the predetermined network may be greater than 75% and less than 85%, for example, the service bandwidth of the predetermined network is 80% of the planned bandwidth. The planned bandwidth refers to the maximum bandwidth which can be borne by the network, and the service bandwidth refers to a larger bandwidth which can be provided when the network works stably. For example, the planned bandwidth of the preset network is 10Gbps (megabits per second), the service bandwidth of the preset network is 8Gbps, and the value of the service bandwidth of the preset network is not specifically limited in this embodiment. Since the real-time total bandwidth of the CDN is allocated between the preset network and the standby network according to the bandwidth allocation ratio, when the real-time total bandwidth increases, the bandwidth on the preset network also increases in proportion, for example, when the bandwidth allocation ratio is 1:2, and when the real-time total bandwidth increases by 3Gbps, the real-time bandwidth allocated by the preset network correspondingly increases by 1Gbps, so that by setting the service bandwidth of the preset network to the preset ratio of the planned bandwidth, the real-time bandwidth allocated to the preset network when the real-time total bandwidth suddenly increases can be prevented from exceeding the planned bandwidth, and the service quality of the preset network is ensured.
Step 303: and calculating to obtain a new bandwidth allocation ratio according to a preset formula.
Wherein, the preset formula may be:
P＝T：(Z-T)；
wherein, P is the new bandwidth allocation ratio, Z is the real-time total bandwidth, and T is the service bandwidth of the preset network.
Note that the inflow distribution ratio and the outflow distribution ratio may be calculated using the above formulas. For example, when the inflow distribution ratio is calculated, P in the formula represents the inflow distribution ratio, T represents the inflow service bandwidth of the preset network, and Z represents the inflow total bandwidth; when the outflow distribution ratio is calculated, the number in the formula is replaced by the outflow related parameters correspondingly.
Step 304: and taking the preset allocation value as a new bandwidth allocation ratio.
The preset allocation value is, for example, 1:0, that is, all bandwidths of the CDN pass through a transmission line of the preset network.
The following illustrates the calculation of the new bandwidth allocation ratio and the scheduling function of the new bandwidth allocation ratio on the bandwidth according to steps 302 to 304 in the process of changing the real-time total bandwidth from small to large and from large to small.
Assuming that the service bandwidth of the preset network is 8Gbps, the real-time total bandwidth of the CDN is 10Gbps according to the real-time bandwidth of the preset network acquired in the first round, and since the real-time total bandwidth is greater than the service bandwidth of the preset network, a new bandwidth allocation ratio is calculated according to the formula: 8: (10-8) ═ 4: 1.
The real-time bandwidth of the preset network collected in the second round is 10Gbps, and the corresponding real-time total bandwidth is as follows: 10/(4/5) ═ 12.5Gbps, the real-time total bandwidth is still greater than the service bandwidth of the preset network, and at this time, the new bandwidth allocation ratio calculated according to the above formula is: 8: (12.5-8) 16: 9. Because 16:9 is less than 4:1, when the real-time total bandwidth is increased, the bandwidth allocation ratio can be automatically reduced, more bandwidth can be allocated to the standby network, and the run-up and cut-out of the bandwidth can be realized.
The third round of acquisition obtains the real-time bandwidth of the preset network as 7Gbps, the real-time total bandwidth obtained by calculation is 7/(16/25) ═ 11Gbps, the real-time total bandwidth is reduced, but is still larger than the service bandwidth of the preset network as 8Gbps, and the new bandwidth allocation ratio obtained by calculation according to the formula is: 8: and (11-8) is 8:3, and since 8:3 is larger than 16:9, when the real-time total bandwidth is reduced, the bandwidth allocation ratio is automatically increased, more bandwidth is allocated to the preset network, and the reduction back cut of the bandwidth is realized.
And the fourth acquisition is carried out to obtain the real-time bandwidth of the preset network as 5Gbps, the corresponding calculation is carried out to obtain the real-time total bandwidth as 5/(8/11) ═ 6.875Gbps, namely the real-time total bandwidth is smaller than the service bandwidth of the preset network as 8Gbps, and at the moment, 1:0 is taken as a new bandwidth allocation ratio, so that all the bandwidths are allocated to the preset network, and the full back cut of the bandwidths is realized.
Through steps 302 to 304, when the total real-time bandwidth is larger (i.e. larger than the service bandwidth of the predetermined network) and continuously increases, more bandwidth can be automatically switched to the backup network, when the total real-time bandwidth is larger and continuously decreases, part of the bandwidth can be automatically switched back to the predetermined network, and when the total real-time bandwidth is smaller (i.e. smaller than or equal to the service bandwidth of the predetermined network), the whole bandwidth can be switched to the predetermined network, so that the transmission of the CDN internal traffic can be maximally implemented by using the predetermined network.
Step 305: and issuing the new bandwidth allocation ratio to an edge node of the CDN, so that the edge node of the CDN allocates bandwidths in corresponding proportions to a preset network and a standby network according to the new bandwidth allocation ratio.
Step 305 is the same as step 103 of the first embodiment, and is not described herein again.
Compared with the prior art, the embodiment simultaneously constructs the CDN in the preset network and the standby network, calculates a new bandwidth allocation ratio according to the real-time total bandwidth of the CDN, the service bandwidth of the preset network and the principle that the service bandwidth of the preset network is preferentially used, and controls the bandwidth allocation of the total bandwidth of the CDN in the preset network and the standby network by updating the bandwidth allocation ratio, so that the preset network preferentially undertakes the transmission of the bandwidth of the CDN, the transmission of the bandwidth of the CDN in the standby network is reduced, the cost is reduced, and the transmission quality is improved. And, calculate the new bandwidth allocation ratio according to the preset formula, can distribute the bandwidth to the preset network according to the change of the real-time total bandwidth preferentially flexibly.
A third embodiment of the present invention relates to a CDN bandwidth scheduling method, please continue to refer to fig. 2, and the method is applied to the acquisition server 108 in fig. 2. Referring to fig. 4, the CDN bandwidth scheduling method of the embodiment includes steps 401 and 402.
Step 401: and acquiring the real-time bandwidth of a preset network.
That is, the real-time bandwidth of the preset network is obtained by collecting port data of the first back-source switch 106 and the second back-source switch 107.
Step 402: and sending the real-time bandwidth of the preset network to a CDN scheduling server for the CDN scheduling server to calculate a new bandwidth allocation ratio according to the real-time bandwidth of the preset network. The bandwidth allocation ratio is used to determine an allocation ratio of the edge server bandwidth of the CDN to the preset network and the standby network.
In an example, the CDN bandwidth scheduling method according to the embodiment may further include monitoring working parameters of the preset network and the standby network in real time. The operating parameters include one or any combination of the following:
presetting the bandwidth of the transmission line of each of the network and the standby network;
presetting the transmission bandwidth of the service type of one or any combination of the following networks:
on-demand broadcasting, live broadcasting and webpage data;
presetting transmission bandwidths of domain name granularities of a network and a standby network;
and presetting the ratio of each download rate, the ratio of each download success rate and the ratio of each download abnormity of the transmission lines of the network and the standby network.
The download rate, the download success rate and the download abnormity of the transmission lines of the preset network and the standby network can be acquired in real time. For example, the download rate is divided into a plurality of rate intervals, the download success rate and the download abnormality may also be divided into a plurality of intervals, and the download rate occupation ratio is the occupation ratio of a certain download rate in a plurality of rate intervals. The download success rate is the ratio of a certain download success rate in a plurality of success rate intervals, and the download abnormal ratio is the ratio of a certain download abnormal ratio in a plurality of abnormal ratio intervals.
By monitoring the bandwidths of different transmission lines, the transmission bandwidths of different service types and the transmission bandwidth of domain name granularity, the actual requirements of the bandwidths can be mastered conveniently, and the subsequent capacity expansion is facilitated. By monitoring the share ratio of each download rate, the share ratio of each download success rate, the share ratio of each download abnormality and the like of different transmission lines, the circuits with poor service performance can be maintained in time.
Compared with the prior art, the real-time bandwidth of the preset network is collected in real time and reported to the scheduling server, so that the scheduling server can calculate a new bandwidth allocation ratio according to a preset network bandwidth priority principle, and further control allocation of the CDN total bandwidth on the preset network and the standby network. By preferentially distributing and preferentially using the preset network bandwidth, the cost can be reduced and the service quality can be improved.
A fourth embodiment of the present invention relates to a CDN bandwidth scheduling method, please continue to refer to fig. 2, and the method is applied to the CDN shown in fig. 2. Wherein, CDN includes: a plurality of edge nodes 102, transit nodes 103, and network devices, where the network devices include, for example: a first node switch 104, a second node switch 105, a first back-source switch 106, and a second back-source switch 107. Referring to fig. 5, the CDN bandwidth scheduling method of the present embodiment includes steps 501 to 503.
Step 501: a bandwidth allocation ratio is received.
Specifically, each edge node in the CDN receives a bandwidth allocation ratio. The bandwidth allocation ratio is issued by the scheduling server in the CDN bandwidth scheduling method according to the first or second embodiment.
Step 502: and setting a preset field value of the IP data packet according to the bandwidth allocation ratio.
Step 503: and determining to adopt a preset network or a standby network of the CDN to transmit the IP data packet according to the preset field value.
Specifically, in steps 502 and 503, for the outflow distribution ratio, the edge node sets a preset field value of the outflow IP data packet according to the outflow distribution ratio, and the network device of the CDN determines to transmit the outflow IP data packet by using a preset network or a standby network of the CDN according to the preset field value of the outflow IP data packet; and aiming at the inflow distribution ratio, the edge node sends the received inflow distribution ratio to a transit node of the CDN, the transit node sets a preset field value of the inflow IP data packet according to the inflow distribution ratio, and the network equipment determines to adopt a preset network or a standby network of the CDN to transmit the inflow IP data packet according to the preset field value of the inflow IP data packet. The preset field value may be a Differentiated Services Code Point (DSCP), but is not limited thereto.
In this embodiment, the network device includes the first node switch 104 and the second node switch 105 (collectively referred to as core switches) in fig. 2. The core switch is used for selecting a preset network or a standby network for an IP data packet according to an IP protocol, and the specific principle is as follows:
first, please refer to the IP protocol format as shown in the following table.
Among them, the format of 8-bit service Type (TOS) is shown in fig. 6. The DSCP value is the first six bits Of TOS (Type Of Service), and the last two bits are the Currently Unused (CU) field. The embodiment selects the DSCP as the preset field, so that the core switch determines the transmission line of the IP packet according to the DSCP value.
Specifically, the routing priority of the core switch is as follows: artificially specify route > OSPF > default route. The core switch executes different routes according to the DSCP value after receiving the IP data packet. For example, when the DSCP value is binary 000000, the core switch selects a preset network to transmit data according to an Open Shortest Path First (OSPF) protocol. If the DSCP value is equal to 1 (i.e., binary 000001), the core switch forces the selection of the standby network to transmit data, but is not limited thereto.
How the CDN allocates the corresponding bandwidth to the predetermined network 100 and the predetermined network 101 according to the received new bandwidth allocation ratio is described below with reference to fig. 2.
In fig. 2, a Border Gateway Protocol (BGP) is executed between the first node switch 104 and the second node switch 105, so that the first back source switch 106 and the second back source switch 107 learn a routing entry of an opposite node through the BGP, and the first node switch 104 and the second node switch 105 also learn a routing entry of the opposite node mutually. If the target transit node is also a transit node under the first node switch 104 when the edge node under the first node switch 104 wants to transit back to the transit node, the route forwarding can be directly performed through the first node switch 104; if the destination transit node is a transit node below the second node switch 105, the packet is encapsulated and then reaches the gateway (the first node switch 104), and then the packet is routed through the routing table, and then the packet is sent to the first back-source switch 106, and then the packet is transmitted to the transit node below the second node switch 105 by the second back-source switch 107 (i.e., the packet is transmitted to the transit node through the predetermined network), or the packet is transmitted to the transit node below the second node switch 105 through the backup network. The packet return principle is the same as above.
The edge node 102 receives a scheduling result from the scheduling server 109, where the scheduling result includes: local IP, destination IP, and new bandwidth allocation ratio. When the edge node sends a download request to the transfer node, a target IP is resolved according to the domain name and is matched with the target IP sent by the scheduling server, and if the matching is successful, a DSCP value is set according to a new bandwidth allocation ratio and a network connection unit.
In this embodiment, when the edge node 102 sends a download request to the transit node 103, the DSCP value is set according to the bandwidth allocation ratio sent by the scheduling server 109. The outgoing DSCP value is set by the edge node 102, and the incoming DSCP value is set by the transit node. Specifically, the edge node sets the outgoing DSCP value in units of one network connection according to the received bandwidth allocation ratio. The edge node carries a status code to the transit node 103 through the HTTP packet header, and the transit node 103 sets an incoming DSPC value according to the status code when returning data. The core switch analyzes the DSCP value from the received IP data packet, if the inflow DSCP value is 1, the standby network is selected to transmit data, if the inflow DSCP value is 0, the preset network is selected to transmit data, and the outflow DSCP value is also processed similarly.
Compared with the prior art, the real-time bandwidth of the preset network is collected in real time and reported to the scheduling server, so that the scheduling server can calculate a new bandwidth allocation ratio according to a preset network bandwidth priority principle, and further control allocation of the total bandwidth of the CDN on the preset network and the standby network. By preferentially distributing and preferentially using the preset network bandwidth, the cost can be reduced and the service quality can be improved. And moreover, the DSCP value of the IP data packet is set through the edge node or the transit node, so that the routing selection of the preset network and the standby network is realized, and the method is easy to realize.
A fifth embodiment of the present invention relates to a scheduling server. As shown in fig. 7, the scheduling server includes: a memory 702 and a processor 701;
wherein the memory 702 stores instructions executable by the at least one processor 701 to perform, by the at least one processor 701,: acquiring the real-time total bandwidth of the CDN; the CDN is constructed in a preset network and a standby network, and the real-time total bandwidth includes: presetting real-time bandwidth of a network and real-time bandwidth of a standby network;
calculating to obtain a new bandwidth allocation ratio according to the real-time total bandwidth and the service bandwidth of the preset network; the bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on the preset network and the standby network;
and issuing the new bandwidth allocation ratio to the CDN, so that the CDN allocates bandwidths in corresponding proportions to the preset network and the standby network according to the new bandwidth allocation ratio.
One or more processors 701 and a memory 702, one processor 701 being illustrated in fig. 7. The processor 701 and the memory 702 may be connected by a bus or by other means, and fig. 7 illustrates an example of a bus connection. Memory 702, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The processor 701 executes various functional applications and data processing of the device by running nonvolatile software programs, instructions, and modules stored in the memory 702, so as to implement the CDN bandwidth scheduling method.
The memory 702 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function. Further, the memory 702 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 702 may optionally include memory located remotely from the processor 701, which may be connected to external devices through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 702 and when executed by the one or more processors 701 perform the CDN bandwidth scheduling method in any of the method embodiments described above.
The above-mentioned device can execute the method provided by the embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method, and reference may be made to the method provided by the embodiment of the present invention for technical details that are not described in detail in the embodiment.
Compared with the prior art, the CDN is simultaneously constructed in the preset network and the standby network, the scheduling server calculates a new bandwidth allocation ratio according to the real-time total bandwidth of the CDN, the service bandwidth of the preset network and the principle that the service bandwidth of the preset network is preferentially used, and then the CDN controls the bandwidth allocation of the total bandwidth of the CDN on the preset network and the standby network according to the received bandwidth allocation ratio, so that the preset network preferentially undertakes the transmission of the bandwidth of the CDN, the transmission of the bandwidth of the CDN on the standby network is reduced, the cost is reduced, and the transmission quality is improved. And, calculate the new bandwidth allocation ratio according to the preset formula, can distribute the bandwidth to the preset network according to the change of the real-time total bandwidth preferentially flexibly.
A sixth embodiment of the present invention relates to an acquisition server. As shown in fig. 8, the acquisition server includes: a memory 802 and a processor 801;
wherein the memory 802 stores instructions executable by the at least one processor 801, the instructions being executed by the at least one processor 801 to implement the CDN bandwidth scheduling method according to the third embodiment.
Compared with the prior art, the embodiment has the advantages that the acquisition server acquires the real-time bandwidth of the preset network in real time and reports the real-time bandwidth to the scheduling server, so that the scheduling server can calculate a new bandwidth allocation ratio according to a preset network bandwidth priority principle, and further control the allocation of the CDN total bandwidth on the preset network and the standby network. By preferentially distributing and preferentially using the preset network bandwidth, the cost can be reduced and the service quality can be improved.
A seventh embodiment of the invention relates to a non-volatile storage medium for storing a computer-readable program for causing a computer to perform some or all of the above method embodiments.
That is, those skilled in the art can understand that all or part of the steps in the method according to the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (15)
1. A CDN bandwidth scheduling method is applied to a scheduling server and is characterized by comprising the following steps:
acquiring the real-time total bandwidth of the CDN; the CDN is constructed in a preset network and a standby network, and the real-time total bandwidth includes: presetting real-time bandwidth of a network and real-time bandwidth of a standby network; wherein the pre-set network has a lower cost and higher quality than the backup network;
calculating to obtain a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of the preset network and a principle of preferentially using the bandwidth of the preset network; the bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on the preset network and the standby network;
and issuing the new bandwidth allocation ratio to an edge node of the CDN, so that the edge node of the CDN allocates bandwidths in corresponding proportions to the preset network and the standby network according to the new bandwidth allocation ratio.
2. The CDN bandwidth scheduling method of claim 1, wherein the obtaining CDN real-time total bandwidth specifically comprises:
receiving the real-time bandwidth of the preset network;
and calculating to obtain the real-time total bandwidth according to the real-time bandwidth of the preset network and the bandwidth allocation ratio corresponding to the real-time bandwidth of the preset network.
3. The CDN bandwidth scheduling method of claim 2, wherein the calculating a new bandwidth allocation ratio according to the real-time total bandwidth, the service bandwidth of the preset network, and a principle of preferentially using the bandwidth of the preset network specifically includes:
and determining whether the real-time bandwidth of the preset network is greater than the service bandwidth, and if so, calculating to obtain the new bandwidth allocation ratio according to a preset formula.
4. The CDN bandwidth scheduling method of claim 3 wherein the predetermined formula is:
P＝T：(Z-T)；
wherein, P is the new bandwidth allocation ratio, Z is the real-time total bandwidth, and T is the service bandwidth of the preset network.
5. The CDN bandwidth scheduling method of claim 3 wherein if the real-time bandwidth of the predetermined network is less than or equal to the service bandwidth, then using a predetermined allocation value as the new bandwidth allocation ratio.
6. The CDN bandwidth scheduling method of any one of claims 1 to 5 wherein a ratio of a service bandwidth of the pre-provisioned network to a projected bandwidth of the pre-provisioned network is greater than 75% and less than 85%.
7. A CDN bandwidth scheduling method is characterized by comprising the following steps:
collecting the real-time bandwidth of a preset network;
sending the real-time bandwidth of the preset network to a scheduling server in the CDN bandwidth scheduling method of any one of claims 1 to 6, for the scheduling server to calculate a new bandwidth allocation ratio according to the real-time bandwidth of the preset network; the bandwidth allocation ratio is used for determining the allocation proportion of the bandwidth of the CDN on the preset network and the standby network; the pre-set network has a lower cost and higher quality than the backup network.
8. The CDN bandwidth scheduling method of claim 7, further comprising:
and monitoring working parameters of the preset network and the standby network in real time.
9. The CDN bandwidth scheduling method of claim 8, wherein the operating parameters include one or any combination of the following:
bandwidth of transmission lines of the preset network and the standby network;
the preset network and the standby network respectively have transmission bandwidth of one or any combination of the following service types:
on-demand broadcasting, live broadcasting and webpage data;
the transmission bandwidth of the domain name granularity of each of the preset network and the standby network;
the download rate, the download success rate and the download exception of the transmission lines of the preset network and the standby network are respectively used.
10. A CDN bandwidth scheduling method is characterized by comprising the following steps:
receiving a bandwidth allocation ratio; the bandwidth allocation ratio is issued by the scheduling server in the CDN bandwidth scheduling method according to any one of claims 1 to 6;
setting a preset field value of an IP data packet according to the bandwidth allocation ratio;
and determining to adopt a preset network or a standby network of the CDN to transmit the IP data packet according to the preset field value.
11. The CDN bandwidth scheduling method of claim 10, wherein the bandwidth allocation ratio comprises: an inflow distribution ratio and an outflow distribution ratio;
the receiving bandwidth allocation ratio is specifically:
an edge node of the CDN receives the bandwidth allocation ratio;
setting a preset field value of an IP data packet according to the bandwidth allocation ratio; determining to adopt a preset network or a standby network of the CDN to transmit the IP data packet according to the preset field value, specifically comprising:
the edge node sets a preset field value of an outgoing IP data packet according to the outgoing distribution ratio, and network equipment of the CDN determines to adopt a preset network or a standby network of the CDN to transmit the outgoing IP data packet according to the preset field value of the outgoing IP data packet;
the edge node sends the received inflow distribution ratio to a transit node of the CDN, the transit node sets a preset field value of an inflow IP data packet according to the inflow distribution ratio, and the network equipment determines to adopt a preset network or a standby network of the CDN to transmit the inflow IP data packet according to the preset field value of the inflow IP data packet.
12. The CDN bandwidth scheduling method of claim 10 wherein the predetermined field value is a differentiated services code point value.
13. A dispatch server, comprising: a memory storing a computer program and a processor running the computer program to implement the CDN bandwidth scheduling method of any one of claims 1 to 6.
14. An acquisition server, comprising: a memory storing a computer program and a processor running the computer program to implement the CDN bandwidth scheduling method of any one of claims 7 to 9.
15. A storage medium storing a computer readable program which when executed by a processor implements the CDN bandwidth scheduling method of any one of claims 1 to 12.
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| CN110138808B (en) * | 2019-06-27 | 2021-04-13 | 苏宁消费金融有限公司 | Anti-hijack downloading method and system based on CDN |
| CN110445723B (en) * | 2019-07-02 | 2022-05-27 | 网宿科技股份有限公司 | Network data scheduling method and edge node |
| CN110708262B (en) * | 2019-10-21 | 2023-04-07 | 北京百度网讯科技有限公司 | Method and apparatus for controlling bandwidth allocation |
| CN112995683B (en) * | 2019-12-12 | 2022-08-05 | 武汉斗鱼鱼乐网络科技有限公司 | Dynamic strategy generation method, device, equipment and storage medium |
| CN110896365B (en) * | 2019-12-20 | 2022-09-02 | 网宿科技股份有限公司 | Traffic scheduling method in network node, server and storage medium |
| CN113746650B (en) * | 2020-05-28 | 2022-12-06 | 北京金山云网络技术有限公司 | Bandwidth allocation method, bandwidth allocation device, scheduling server and medium |
| CN112073542B (en) * | 2020-11-12 | 2021-02-05 | 腾讯科技（深圳）有限公司 | Fog node scheduling method and device, computer equipment and storage medium |
| CN114844949B (en) * | 2021-02-02 | 2023-10-27 | 北京金山云网络技术有限公司 | Service scheduling method, device, equipment and storage medium |
| CN112804110B (en) * | 2021-03-19 | 2023-05-09 | 上海七牛信息技术有限公司 | Bandwidth accurate control method and device based on content distribution network index system |
| CN113079045B (en) * | 2021-03-26 | 2022-03-25 | 北京达佳互联信息技术有限公司 | Bandwidth allocation method, device, server and storage medium |
| CN113872804A (en) * | 2021-09-24 | 2021-12-31 | 北京金山云网络技术有限公司 | Bandwidth allocation method and device, electronic equipment and computer-readable storage medium |
| CN114338705B (en) * | 2021-11-24 | 2023-12-01 | 阿里巴巴（中国）有限公司 | Resource water level control method, equipment and medium for CDN node of content delivery network |
| CN114726732A (en) * | 2022-02-28 | 2022-07-08 | 网宿科技股份有限公司 | CDN bandwidth resource planning method and device, electronic equipment and storage medium |
| CN115361287A (en) * | 2022-08-16 | 2022-11-18 | 中国银行股份有限公司 | Edge node flow scheduling method and device |
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| CN102158391A (en) * | 2010-11-12 | 2011-08-17 | 华为数字技术有限公司 | Method and device for adjusting link bandwidth |
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