CN111541796B - CDN access flow scheduling method, device, communication system and storage medium - Google Patents

CDN access flow scheduling method, device, communication system and storage medium Download PDF

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Publication number
CN111541796B
CN111541796B CN202010316077.5A CN202010316077A CN111541796B CN 111541796 B CN111541796 B CN 111541796B CN 202010316077 A CN202010316077 A CN 202010316077A CN 111541796 B CN111541796 B CN 111541796B
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web server
list information
domain name
target
address
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CN111541796A (en
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符立佳
苗辉
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Guizhou Baishancloud Technology Co Ltd
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Guizhou Baishancloud Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing

Abstract

The embodiment of the invention discloses a CDN access flow scheduling method, equipment, a communication system and a storage medium. The method is used for improving the domain name resolution efficiency. The method provided by the embodiment of the invention comprises the following steps: acquiring target list information from a plurality of management devices, and combining the target list information of the plurality of management devices to obtain first list information, wherein the plurality of management devices belong to different CDN service providers; dynamically adjusting a coverage scheme, the coverage scheme including parameters relating to quality of service requirements; receiving a domain name resolution request of the LDNS, determining a target area according to an IP address of the LDNS, matching the coverage scheme with related parameters in first list information, and determining an optimal web server in the target area; and sending the IP address of the optimal Web server to the LDNS.

Description

CDN access flow scheduling method, device, communication system and storage medium
The application is a divisional application of a Chinese patent application with the title of 'processing method, equipment and communication system of CDN service' filed by the patent office of the intellectual Property office of China, application number 201610834986.1, 20/09/2016.
Technical Field
The present invention relates to the field of internet technologies, and in particular, to a CDN access traffic scheduling method, device, communication system, and storage medium.
Background
A Content Delivery Network (CDN) is a Network architecture that adds a new layer of Network architecture to the existing Internet, and delivers the Content of a website to the "edge" of the Network closest to a user, so that the user can obtain the required Content nearby, thereby solving the congestion of the Internet Network and increasing the response speed of the user accessing the website.
In a general method, when a Local Domain Name Server (Local Domain Name Server, abbreviation: LDNS) receives a Domain Name resolution request sent by a netizen client in a Local area (beijing), the Local Domain Name Server (Local Domain Name Server, abbreviation: LDNS) sends the Domain Name resolution request to a Domain Name Server (Domain Name Server, abbreviation: DNS), in the process that DNS sequentially accesses DNS in each level through recursive resolution, DNS feeds back an alias (cname) of the Domain Name to the LDNS, after receiving the cname, the LDNS obtains an IP address of a web Server corresponding to the cname through recursive query again, and feeds back the IP address of a web Server in the beijing area obtained through resolution to the netizen client, and the client accesses the IP address to obtain data.
In the method, the final IP address is fed back to the client, at least two times of recursive resolution are needed, the DNS feeds back the alias (cname) of the domain name to the LDNS in the process that the DNS sequentially accesses all levels of DNS through the recursive resolution for the first time, and the LDNS obtains the IP address of the web server corresponding to the cname through recursive query again after receiving the cname for the second time. The domain name resolution efficiency is low, and the waiting time of net citizens is prolonged.
Disclosure of Invention
The embodiment of the invention provides a processing method, equipment and a communication system of CDN (content delivery network) services, which are used for saving domain name resolution time and improving domain name resolution efficiency.
In a first aspect, an embodiment of the present invention provides a method for processing a CDN service, where the method includes:
the method comprises the steps that a domain name resolution server DNS obtains first list information from management equipment of a CDN service provider of a content delivery network, the first list information comprises a domain name, a target area and an IP address of a web server, and the IP address of the web server has a mapping relation with the domain name and the target area.
The DNS receives a domain name resolution request sent by a local domain name resolution server (LDNS), wherein the domain name resolution request comprises a target domain name and an IP address of the LDNS.
The DNS determines a target area according to the IP address of the LDNS;
and the DNS determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information.
The DNS sends the IP address of the target Web server to the LDNS.
In one possible implementation, the DNS acquiring the first list information from the plurality of management devices includes:
the DNS periodically acquires first list information from the management equipment, wherein the first list information also comprises load information and/or performance state information of the web server;
the DNS determines the IP address of a target Web server in a target area corresponding to the target domain name according to the first list information, and the method comprises the following steps:
the DNS determines the IP address of a web server in the target area according to the first list information;
the DNS determines the IP address of a target web server according to the load information and/or the performance state information of the web server, wherein the target web server is a web server with the load information superior to a threshold value and/or the performance state information superior to the threshold value.
In one possible implementation manner, after receiving, by the DNS, a domain name resolution request sent by a local domain name resolution server LDNS of the target zone, the method further includes:
the DNS acquires second list information of the target area from the management equipment, wherein the second list information comprises load information and/or performance state information of a web server in the target area;
the DNS determines the IP address of a target Web server in a target area corresponding to the target domain name according to the first list information, and the method comprises the following steps:
the DNS determines the IP address of the web server in the target area according to the first list information;
and the DNS determines the IP address of the target web server according to the load information and/or the performance state information of the web server in the second list information, wherein the target web server is the web server of which the load information is better than the threshold value and/or the performance state information is better than the threshold value.
In a possible implementation manner, the obtaining, by a domain name resolution server DNS, first list information from a management device of a content delivery network CDN service provider includes:
the DNS acquires target list information from a plurality of management devices, the management devices belong to different CDN service providers, the target list information comprises a domain name, a target area and an IP address of a web server, and the IP address of the web server has a mapping relation with the domain name and the target area;
and the DNS merges the target list information to obtain first list information.
In a second aspect, an embodiment of the present invention provides a method for processing a CDN service, where the method includes:
the method comprises the steps that management equipment of a Content Delivery Network (CDN) service provider provides first list information to a domain name resolution server (DNS), the first list information comprises a domain name, a target area and an IP address of a Web server, the IP address of the Web server and the domain name and the target area both have a mapping relation, the first list information is used for determining the IP address of the target domain name and the IP address of an LDNS when the DNS receives a domain name resolution request sent by the LDNS of the target area, the DNS determines the target area according to the IP address of the LDNS and determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information, so that the DNS sends the IP address of the target Web server to the LDNS.
In a possible implementation manner, the providing, by the management device of the CDN service provider, the first list information to the domain name resolution server DNS includes:
the method comprises the steps that management equipment periodically divides areas to obtain load information and/or performance state information of each web server in the areas;
the management equipment obtains first list information according to the load information and the IP addresses of the plurality of web servers;
the management device periodically provides the DNS with the first list information.
In one possible implementation, the method further comprises:
the management equipment receives a request sent by a DNS, wherein the request comprises target area information;
the management equipment acquires load information and/or performance state information of the web server in the target area according to the request;
the management equipment generates second list information according to the load information and/or the performance state information of the web server and the IP list information of the web server;
the management device sends the second list information to the DNS.
In a third aspect, an embodiment of the present invention provides a domain name resolution server, including:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring first list information from management equipment of a Content Delivery Network (CDN) service provider, the first list information comprises a domain name, a target area and an IP address of a web server, and the IP address of the web server has a mapping relation with the domain name and the target area;
the system comprises a receiving module, a sending module and a sending module, wherein the receiving module is used for receiving a domain name resolution request sent by a local domain name resolution server (LDNS), and the domain name resolution request comprises a target domain name and an IP address of the LDNS;
a determining module, configured to determine a target area according to the IP address of the LDNS received by the receiving module; determining the IP address of the target Web server in the target area corresponding to the target domain name received by the receiving module according to the first list information acquired by the acquiring module;
and the sending module is used for sending the IP address of the target Web server determined by the determining module to the LDNS.
In a possible implementation manner, the determining module further includes a first determining unit and a second determining unit;
the acquisition module is further used for periodically acquiring first list information from the management equipment, wherein the first list information further comprises load information and/or performance state information of the web server;
the first determining unit is used for determining the IP address of the web server in the target area according to the first list information acquired by the acquiring module;
and the second determining unit is used for determining the IP address of the target web server according to the load information and/or the performance state information of the web server determined by the first determining unit, wherein the target web server is the web server of which the load information is better than the threshold value and/or the performance state information is better than the threshold value.
In a possible implementation manner, the determining module further includes a first determining unit and a second determining unit;
the acquisition module is further used for acquiring second list information of the target area from the management equipment, wherein the second list information comprises load information and/or performance state information of the web server in the target area;
the first determining unit is used for determining the IP address of the web server in the target area according to the first list information acquired by the acquiring module;
and the second determining unit is used for determining the IP address of the target web server according to the load information and/or the performance state information of the web server in the second list information acquired by the acquiring module, wherein the target web server is a web server of which the load information is better than the threshold value and/or the performance state information is better than the threshold value.
In a possible implementation manner, the system further comprises a list merging module;
the system comprises an acquisition module, a storage module and a management module, wherein the acquisition module is further used for acquiring target list information from a plurality of management devices, the management devices belong to different CDN service providers, the target list information comprises a domain name, a target area and an IP address of a web server, and the IP address of the web server has a mapping relation with the domain name and the target area; (ii) a
And the list merging module merges the target list information acquired by the acquisition modules to acquire first list information.
In a fourth aspect, an embodiment of the present invention provides a management apparatus, including:
the sending module is used for providing first list information to a domain name resolution server (DNS), the first list information comprises a domain name, a target area and an IP address of a Web server, the IP address of the Web server and the domain name and the target area both have a mapping relation, the first list information is used for determining the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information when the DNS receives a domain name resolution request sent by the LDNS of the target area, the domain name resolution request comprises the IP address of the target domain name LDNS, and the DNS determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information so that the DNS sends the IP address of the target Web server to the LDNS.
In one possible implementation manner, the method further includes: the device comprises an acquisition module and a determination module;
the acquisition module is used for periodically acquiring the load information and/or the performance state information of each web server in the region in a regional mode;
the determining module is used for obtaining first list information according to the load information obtained by the obtaining module and the IP addresses of the plurality of web servers;
and the sending module is further used for periodically providing the first list information determined by the determining module to the DNS.
In one possible implementation manner, the method further includes: a receiving module and a generating module;
the receiving module is used for receiving a request sent by the DNS, wherein the request comprises target area information;
the acquisition module is also used for acquiring the load information and/or the performance state information of the web server in the target area according to the request received by the receiving module;
the generating module is further used for generating second list information according to the load information and/or the performance state information of the web server and the IP list information of the web server, which are acquired by the acquiring module;
and the sending module is further used for sending the second list information generated by the generating module to the DNS.
In a fifth aspect, an embodiment of the present invention provides a communication system, including: a domain name resolution server DNS and a management device of a CDN service provider of a content delivery network;
the DNS obtains first list information from management equipment of a CDN service provider of a content distribution network, wherein the first list information comprises IP addresses of a plurality of web servers, and each IP address has a mapping relation with a domain name.
The DNS receives a domain name resolution request sent by a local domain name resolution server (LDNS) of a target area, wherein the domain name resolution request comprises a target domain name.
And the DNS determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information.
The DNS sends the IP address of the target Web server to the LDNS.
According to the technical scheme, the embodiment of the invention has the following advantages:
in the embodiment of the invention, the first list information is obtained from the management device of the CDN service provider through the DNS, the first list information comprises a domain name, a target area and an IP address of a Web server, the IP address of the Web server has a mapping relation with the domain name and the target area, and when the DNS receives a domain name resolution request sent by the LDNS of the target area, the DNS can determine the IP address of the Web server in the target area corresponding to the target domain name according to the target list information. The scheduling granularity is optimized to the IP address of each Web server, and is more detailed; and the method changes the mode that the service needs to be switched to the CDN service provider in a cname mode and the IP address is finally obtained in a secondary recursive analysis mode in the traditional method, greatly saves the analysis time and further saves the waiting time of net citizens.
Drawings
FIG. 1 is a schematic diagram of a communication system in an embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of a processing method of a CDN service in an embodiment of the present invention;
fig. 3 is a schematic diagram of another embodiment of a processing method of the CDN service in the embodiment of the present invention;
fig. 4 is a schematic diagram of another embodiment of a processing method of the CDN service in the embodiment of the present invention;
fig. 5 is a schematic diagram of another embodiment of a processing method of the CDN service in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of an embodiment of a domain name resolution server in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of another embodiment of a domain name resolution server in the embodiment of the present invention;
fig. 8 is a schematic structural diagram of another embodiment of a domain name resolution server in the embodiment of the present invention;
fig. 9 is a schematic structural diagram of an embodiment of a management device in an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another embodiment of the management device in the embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a processing method, equipment and a communication system of CDN service, wherein the scheduling granularity is optimized to the IP address of each Web server, and is more refined; and the method that the service needs to be switched to the CDN service provider in a cName mode and the IP address is finally obtained in a secondary recursive analysis mode in the traditional method is changed, so that the analysis time is greatly saved, and the waiting time of netizens is saved.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
An embodiment of the present invention provides a method for processing a CDN service, where the method is applied to a communication system, please refer to fig. 1, and fig. 1 is a schematic diagram of the communication system. The communication system comprises a client 110, a local domain name resolution server, LDNS120, a domain name resolution server, DNS130, a management device 140. The management device belongs to a CDN service provider, and it should be noted that the management device may be understood as a set of multiple management devices, and in the set of management devices, each management device may belong to a different CDN service provider, or may also refer to a management device of one CDN service provider, and a specific implementation form is not limited in practical application.
The DNS130 obtains first list information from the management device 140 of the CDN service provider, where the first list information includes a domain name, a target area, and an IP address of a web server, where the IP address of the web server has a mapping relationship with the domain name, and the IP address of the web server has a mapping relationship with the target area. The client 110 of the target zone (e.g., beijing) sends a domain name resolution request to the LDNS120 that includes a target domain name, which may be www.a.com, for example. The LDNS120 queries a local cache list, and if there is no www.a.com cache information in the local cache list, the LDNS120 sends a domain name resolution request to the DNS130, where the domain name resolution request includes a target domain name and an IP address of the LDNS. The DNS130 receives a domain name resolution request sent by a local domain name resolution server LDNS of the target zone, the domain name resolution request including the target domain name and the IP address of the LDNS.
The DNS130 determines a target area according to the IP address of the LDNS, and determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information. The DNS130 sends the IP address of the target Web server to the LDNS 120. The LDNS120 feeds back the IP address of the target Web server to the client 110 of the target zone (e.g., beijing). Client 110 initiates a Web request to target Web server 150 and retrieves the data.
Referring to fig. 2, an embodiment of the method for processing a CDN service according to an embodiment of the present invention includes:
step 201, the DNS acquires first list information from a management device of the CDN service provider, where the first list information includes a domain name, a target area, and an IP address of the web server, the IP address of the web server has a mapping relationship with the domain name, and the IP address of the web server has a mapping relationship with the target area.
The DNS acquires the first list information from the management device, and the specific manner of acquiring may be: the DNS sends a request for acquiring the first list information to the management equipment, and the DNS feeds the first list information back to the DNS according to the request. Or, the DNS may be actively reported for the management device. In practical applications, the present invention is not limited to the specific implementation manner.
Step 202, the LDNS sends a domain name resolution request to the DNS, where the domain name resolution request includes a target domain name and an IP address of the LDNS.
For example, a client of a target zone (e.g., beijing) sends a domain name resolution request to the LDNS that includes a target domain name, which may be www.a.com, for example. The LDNS queries the local cache list, and if there is no cache information of www.a.com, the LDNS sends a domain name resolution request to the DNS, where the domain name resolution request includes the target domain name.
Step 203, the DNS determines, according to the first list information, an IP address of a target Web server in a target area corresponding to the target domain name;
for example, the first list information is shown in table 1 below:
TABLE 1
Target domain name Target area IP address
www.a.com beijing 101.101.101.101
www.a.com shanghai 202.202.202.202
www.a.com guangdong 303.303.303.303
If the target area is beijing, the DNS determines that the IP address of the target web server is "101.101.101.101".
Step 204, the DNS sends the IP address of the target Web server to the LDNS.
The DNS sends the IP address of the target web server "101.101.101.101" to the LDNS. So that the LDNS feeds back the IP address to the client, and the client sends a request to the web server according to the IP address to obtain data.
In the embodiment of the invention, a first list information is acquired from a management device of a CDN service provider through a DNS, the first list information comprises a domain name, a target area and an IP address of a Web server, the IP address of the Web server and the domain name have a mapping relation, the IP address of the Web server and the target area have a mapping relation, when the DNS receives a domain name resolution request sent by an LDNS of the target area, the DNS can determine the target area according to the IP address of the LDNS in the domain name resolution request, and determine the IP address of the Web server in the target area corresponding to the target domain name according to the target list information. The scheduling granularity is optimized to the IP address of each Web server, and is more refined; and the method that the service is switched to the CDN service provider through the cname mode and the IP address is finally obtained through the secondary recursive analysis mode in the traditional method is changed, the analysis time is greatly saved, and the waiting time of netizens is saved.
In the embodiment of the invention, because no cross-domain cname exists, the service domain name cname does not need to be sent to the CDN acceleration domain name, and the information of a service provider cannot be disclosed. For example, if the target domain name is www.a.com, in the conventional method, the cname is "www.a.nn.com", and in www.a.nn.com, "nn" is the name of the CDN service provider, and it is easy to know from the cname which customers are served by the CDN service provider, and business information is easily leaked. In the embodiment of the invention, the CDN service is not introduced in a cname mode, but the first list information is directly acquired from the management equipment through the authoritative DNS, and the IP address of the web server capable of being served is acquired to realize the introduction of the CDN service, so that the information of a CDN service provider can be effectively protected.
Referring to fig. 3, another embodiment of the method for processing CDN services according to the present invention includes:
step 301, the management device periodically divides the area to obtain the first list information in the area.
Specifically, the management device periodically performs regional division to obtain load information and/or performance status information of each web server in the region. The management device generates first list information based on the load information and the IP addresses of the plurality of web servers.
It is understood that, for example, the management apparatus manages web servers of three areas, "beijing", "shanghai", and "guangdong", respectively, each of which may include at least one web server. It should be noted that the three regions are only illustrative and not restrictive of the scope of the regions.
In one possible implementation, the management device may first obtain the IP list of the original web server in different areas. Then, the management device partition acquires load information, performance status information, and the like of each web server in each area. For example, the performance status information may be the line speed of the web server, the load range that the web server is capable of handling, throughput capability, response time, and the like. The management device can screen an original web server IP list according to the load information and/or the performance state information of each web server, screen out a target web server with the load information and/or the performance state information better than a threshold value, and finally determine first list information, wherein the first list information comprises the IP address of the web server and the load information and/or the performance state information of the web server.
It should be noted that many schemes may be included in the process of screening the target web server through the load information and/or the performance status information, which is illustrated below. For example, (1) only the load information may be considered, and the web servers with load information better than the first threshold may be screened as the target web servers. (2) And only considering the performance state information, and screening the web servers of which the performance state information is superior to a second threshold value as target web servers. (3) And comprehensively calculating the weight of the load information and the performance state information, and determining the target web server according to the weight. (4) And the load information and the performance state information are both superior to the threshold value and are determined as the target web server. The above method is merely illustrative and not restrictive, and the specific method is not limited in practical application.
Step 302, the management device periodically sends the first list information to the DNS.
The management device periodically sends the first list information to the DNS, so that the first list information can be periodically updated, and the web server scheduling is more accurate.
Step 303, the LDNS sends a domain name resolution request to the DNS, where the domain name resolution request includes the target domain name and the IP address of the LDNS.
For example, a client of a target zone (e.g., beijing) sends a domain name resolution request to the LDNS, the domain name resolution request including a target domain name, which may be www.a.com, for example. The LDNS queries a local cache list, and if no cache information of www.a.com exists, the LDNS sends a domain name resolution request to the DNS, wherein the domain name resolution request comprises a target domain name and an IP address of the LDNS.
And step 304, the DNS determines a target area according to the IP address of the LDNS, and determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information received periodically.
For example, the IP address of the target web server finally determined by the DNS is "202.202.202.202", the service address of the target web server is beijing, and the available bandwidth is "10G". Step 305, the DNS sends the IP address of the target Web server to the LDNS.
In the embodiment of the invention, the DNS is used for acquiring the first list information from the management equipment of the CDN service provider, the first list information comprises the IP address of the Web server with a mapping relation with the domain name, and when the DNS receives the domain name resolution request sent by the LDNS of the target area, the DNS can determine the IP address of the Web server in the target area corresponding to the target domain name according to the target list information. The scheduling granularity is optimized to the IP address of each Web server, and is more refined; and the method that the service is switched to the CDN service provider through the cname mode and the IP address is finally obtained through the secondary recursive analysis mode in the traditional method is changed, the analysis time is greatly saved, and the waiting time of netizens is saved.
Referring to fig. 4, another embodiment of the method for processing CDN services according to the present invention includes:
step 401, the DNS periodically acquires target list information from a plurality of management devices.
The management devices belong to different CDN service providers, the target list information comprises IP addresses of the web servers, domain names and target areas, the IP address of each web server has a mapping relation with the domain name, and the IP address of each web server has a mapping relation with the target area. Each management device reports the target list information periodically, which can be understood by referring to steps 301 to 303 in the embodiment corresponding to fig. 3. And are not described in detail herein.
Step 402, the DNS merges the plurality of target list information to obtain first list information.
The DNS merges the target list information to obtain first list information, that is, the first list information includes information of web servers managed by management devices of the CDN service providers, and the first list information is a database of one web server.
Step 403, the LDNS sends a domain name resolution request to the DNS, where the domain name resolution request includes the target domain name and the IP address of the LDNS.
For example, a client of a target zone (e.g., beijing) sends a domain name resolution request to the LDNS, the domain name resolution request including a target domain name, which may be www.a.com, for example. The LDNS queries the local cache list, and if there is no cache information of www.a.com, the LDNS sends a domain name resolution request to the DNS, where the domain name resolution request includes the target domain name.
Step 404, the DNS determines a target area according to the IP address of the LDNS, and determines the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information.
The DNS includes a dynamically adjusted coverage scheme, which can be understood as a quality of service requirement, for example, which can include: may depend on parameters such as quality of service requirements, target area (e.g., beijing), load information for web servers, performance state information, etc.
The DNS can be matched with the relevant parameters in the first list information according to its own coverage scheme. And finally determining the optimal IP address of the web server. For example, there may be two IP addresses of the web server corresponding to the target domain name in the first list information, which are: the IP address of the first web server of the first CDN service that is reported by the first management device is "101.101.101.101". The other is a second web server of the second CDN service provider reported by the second management device, and an IP address of the second web server is "202.202.202.202".
The specific method for further determining the target web server may be: the DNS may calculate a difference value between the parameter of each web server in the first list of information and the same parameter in the overlay template, respectively. For example, the parameters are illustrated with load information. The difference value between the load information of each web server and the load information in the coverage template can be calculated respectively, so that two difference values can be calculated, and then the two difference values are compared, wherein the smaller the difference value is, the more the load information of the web server meets the requirement. Further, a target web server is determined among the two web services. The above-described method is merely illustrative, not restrictive, and a specific method in practical use is not limited thereto.
Step 405, DNS sends the IP address of the target Web server to the LDNS.
In the embodiment of the invention, the DNS can periodically acquire the target list information of a plurality of management devices, the management devices belong to different service providers, the target list information reported by the management devices is merged to obtain the first list information, so that the service information of a plurality of CDN service providers is obtained, and the DNS can determine the IP address of a target web server according to the service quality requirement. The scheduling granularity is optimized to the IP address of each Web server, and is more detailed; the method changes the mode that the business is switched to the CDN service provider in a cName mode and the IP address is finally obtained in a secondary recursive analysis mode in the traditional method, greatly saves the analysis time and further saves the waiting time of netizens. And the service quality is improved, so that the performance index of the target web server accessed by the netizen is improved.
Referring to fig. 5, another embodiment of a method for processing CDN services according to an embodiment of the present invention includes:
step 501, a domain name resolution server DNS acquires first list information from a management device of a content distribution network CDN service provider, where the first list information includes a domain name, a target area, and an IP address of a web server, the IP address of the web server has a mapping relationship with the domain name, and the IP address of the web server has a mapping relationship with the target area. This step should be understood with reference to step 201 in the embodiment corresponding to fig. 2.
Step 502, the LDNS sends a domain name resolution request to the DNS, where the domain name resolution request includes a target domain name and an IP address of the LDNS.
This step should be understood in conjunction with step 202 in the corresponding embodiment of fig. 2.
Step 503, the DNS acquires second list information of the target area from the management device according to the domain name resolution request, where the second list information includes load information and/or performance status information of the web server in the target area.
Step 504, the DNS determines the IP address of the web server in the target area according to the first list information.
For example, the DNS determines, according to the first list information, that the IP addresses of two web servers in the beijing area are: "101.101.101.101" and "202.202.202.202".
It should be noted that the IP address of the web server in the embodiment of the present invention is for illustration and is not limited to the illustration.
Step 505, the DNS determines the IP address of the target web server according to the load information and/or performance status information of the web server in the second list information.
The target web server is the target web server with the load information being better than the threshold value and/or the performance state information being better than the threshold value.
The DNS is further respectively, according to the IP addresses in the second list information: the load information and/or performance state information of the two web servers of "101.101.101.101" and "202.202.202.202" determine the IP address of the target web server.
For example, if the load information and performance status information of the web server having the IP address "101.101.101.101" are better than the threshold, it is determined that "101.101.101.101" is the IP address of the target web server.
In the embodiment of the invention, the DNS acquires first list information from the management equipment, wherein the first list information comprises IP addresses of a plurality of web servers. And after receiving a domain name resolution request sent by the LDNS, the DNS acquires second list information from the management equipment, wherein the second list information comprises load information and/or performance state information of the web server, and the DNS comprehensively determines the IP address information of the target web server according to the first list information and the second list information.
Step 506, the DNS sends the IP address of the target Web server to the LDNS.
Referring to fig. 6, an embodiment of a domain name resolution server 600 according to the present invention includes:
an obtaining module 610, configured to obtain first list information from a management device of a CDN service provider, where the first list information includes a domain name, a target area, and an IP address of a web server, where the IP address of the web server has a mapping relationship with the domain name, and the IP address of the web server has a mapping relationship with the target area; a receiving module 620, configured to receive a domain name resolution request sent by a local domain name resolution server LDNS in a target area, where the domain name resolution request includes a target domain name and an IP address of the LDNS;
a determining module 630, configured to determine a target area according to the IP address of the LDNS of the receiving module 610, and determine, according to the first list information acquired by the acquiring module 610, the IP address of the target Web server in the target area corresponding to the target domain name received by the receiving module 620;
a sending module 640, configured to send the IP address of the target Web server determined by the determining module 630 to the LDNS.
On the basis of the embodiment corresponding to fig. 6, another embodiment of the domain name resolution server 700 provided by the embodiment of the present invention includes:
the determination module 630 further includes a first determination unit 631 and a second determination unit 632.
The obtaining module 610 is further configured to periodically obtain first list information from the management device, where the first list information further includes load information and/or performance status information of the web server;
the determining module 630 further includes a first determining unit 631 configured to determine an IP address of the web server in the target area according to the first list information acquired by the acquiring module 610;
a second determining unit 632, configured to determine, according to the load information and/or the performance status information of the web server determined by the first determining unit, an IP address of a target web server, where the load information and/or the performance status information of the target web server is better than a threshold.
Optionally, the obtaining module 610 is further configured to obtain, from the management device, second list information of the target area, where the second list information includes load information and/or performance status information of a web server in the target area;
a first determining unit 631 for determining an IP address of a web server within the target area according to the first list information acquired by the acquiring module 610;
the second determining unit 632 is configured to determine an IP address of a target web server according to the load information and/or the performance status information of the web server in the second list information acquired by the acquiring module 610, where the target web server is a web server whose load information is better than the threshold and/or whose performance status information is better than the threshold.
On the basis of the embodiment corresponding to fig. 6, another embodiment of the domain name resolution server 800 provided by the embodiment of the present invention includes: a list merge module 650;
the obtaining module 610 is further configured to obtain target list information from multiple management devices, where the multiple management devices belong to different CDN service providers, the target list information includes a domain name, a target area, and an IP address of a web server, and the IP address of the web server has a mapping relationship with both the domain name and the target area;
the list merging module 650 merges the target list information obtained by the obtaining module 610 to obtain the first list information.
Referring to fig. 9, an embodiment of the management apparatus 900 according to the present invention includes:
a sending module 930 for providing the first list information to a domain name resolution server DNS,
the first list information comprises a domain name, a target area and an IP address of a Web server, the IP address of the Web server, the domain name and the target area are in mapping relation, the first list information is used for determining the target area according to the IP address of the LDNS when the DNS receives a domain name resolution request sent by the LDNS of the target area, and determining the IP address of the target Web server in the target area corresponding to the target domain name according to the first list information, so that the DNS sends the IP address of the target Web server to the LDNS.
An obtaining module 910, configured to obtain load information and/or performance status information of each web server in the region in the periodic partition region;
a determining module 920, configured to obtain first list information according to the load information and/or the performance status information obtained by the obtaining module 910 and the IP addresses of the multiple web servers;
optionally, the sending module 930 is further configured to periodically provide the first list information determined by the determining module 920 to the DNS.
Based on the embodiment corresponding to fig. 9, please refer to fig. 10, in which an embodiment of the management apparatus 1000 according to the present invention includes: a receiving module 940 and a generating module 950.
A receiving module 940, configured to receive a request sent by the DNS, where the request includes target area information;
the obtaining module 910 is further configured to obtain load information and/or performance status information of the web server in the target area according to the request received by the receiving module;
the generating module 950 is further configured to generate second list information according to the load information and/or performance state information of the web server and the IP list information of the web server, which are acquired by the acquiring module 910;
the sending module 930 is further configured to send the second list information generated by the generating module 950 to the DNS.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of 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 various media capable of storing program codes.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

  1. The CDN access flow scheduling method is applied to a DNS and is characterized by comprising the following steps:
    acquiring target list information from management devices of a plurality of different CDN manufacturers, and merging the target list information provided by the management devices of the plurality of different CDN manufacturers to obtain first list information, wherein the plurality of management devices belong to different CDN service providers; the target list information comprises an acceleration domain name of a CDN manufacturer, a target area for the CDN manufacturer to provide acceleration service for the acceleration domain name and an IP address of a web server of the CDN manufacturer;
    dynamically adjusting an overlay scheme, the overlay scheme including parameters relating to quality of service requirements;
    receiving a domain name resolution request of the LDNS, determining a target area according to an IP address of the LDNS, matching the coverage scheme with related parameters in first list information, and determining an optimal web server in the target area;
    sending the IP address of the optimal Web server to the LDNS;
    the determining an optimal web server in the target area according to the matching of the coverage scheme and the relevant parameters in the first list information includes:
    the DNS respectively calculates the difference value between the parameter of each web server in the first list information and the same parameter in the coverage template;
    and determining the web server with the minimum difference value as the optimal web server.
  2. 2. The CDN access traffic scheduling method of claim 1, wherein the overlay scheme comprises: quality of service requirements, target area, load information of web server, performance state information and other parameter information.
  3. The CDN access flow scheduling method is applied to management equipment and is characterized by comprising the following steps:
    the method comprises the steps that management equipment of a Content Delivery Network (CDN) service provider provides target list information to a domain name resolution server (DNS), wherein the target list information comprises a domain name, a target area and an IP address of a web server, the IP address of the web server and the domain name and the target area have mapping relations, so that the domain name resolution server (DNS) obtains the target list information from management equipment of a plurality of different CDN manufacturers, the target list information provided by the management equipment of the plurality of different CDN manufacturers is combined to obtain first list information, and the plurality of management equipment belong to different CDN service providers; the target list information comprises an acceleration domain name of a CDN manufacturer, a target area for the CDN manufacturer to provide acceleration service for the acceleration domain name and an IP address of a web server of the CDN manufacturer; dynamically adjusting an overlay scheme, the overlay scheme including parameters relating to quality of service requirements; receiving a domain name resolution request of the LDNS, determining a target area according to an IP address of the LDNS, matching the coverage scheme with related parameters in first list information, and determining an optimal web server in the target area; the determining an optimal web server in the target area according to the matching of the coverage scheme and the relevant parameters in the first list information includes: the DNS respectively calculates the difference value between the parameter of each web server in the first list information and the same parameter in the coverage template; and determining the web server with the minimum difference value as the optimal web server.
  4. 4. The CDN access traffic scheduling method of claim 3, wherein the providing, by the management device of the CDN service provider, the target list information to the domain name resolution server DNS includes:
    the management equipment periodically divides the area to obtain the load information and/or the performance state information of each web server in the area;
    the management equipment obtains target list information according to the load information and the IP addresses of the plurality of web servers;
    the management device periodically provides the target list information to the DNS.
  5. 5. The CDN access traffic scheduling method of claim 4, wherein the method further comprises:
    the management equipment divides the area to obtain the IP list of the original web server in different areas;
    acquiring load information and performance state information of each web server in each area;
    screening is carried out in an IP list of an original web server, and a target web server with load information and/or performance state information superior to a threshold value is screened out;
    and obtaining target list information according to the IP address of the target web server.
  6. 6. A domain name resolution server, comprising:
    the system comprises an acquisition module, a management module and a management module, wherein the acquisition module is used for acquiring target list information from management devices of different CDN manufacturers, and merging the target list information provided by the management devices of the different CDN manufacturers to obtain first list information, and the management devices belong to different CDN service providers; the target list information comprises an acceleration domain name of a CDN manufacturer, a target area for the CDN manufacturer to provide acceleration service for the acceleration domain name and an IP address of a web server of the CDN manufacturer;
    a receiving module for dynamically adjusting a coverage scheme, the coverage scheme comprising parameters related to quality of service requirements;
    the determining module is used for receiving a domain name resolution request of the LDNS, determining a target area according to an IP address of the LDNS, matching the coverage scheme with related parameters in the first list information and determining an optimal web server in the target area; the determining an optimal web server in the target area according to the matching of the coverage scheme and the relevant parameters in the first list information includes: the DNS respectively calculates the difference value between the parameter of each web server in the first list information and the same parameter in the coverage template; determining the web server with the minimum difference value as an optimal web server;
    and the sending module is used for sending the IP address of the optimal Web server to the LDNS.
  7. 7. A management device, characterized by comprising:
    the system comprises a sending module, a domain name resolution server DNS and a plurality of management devices, wherein the sending module is used for providing target list information to the domain name resolution server DNS, the target list information comprises a domain name, a target area and an IP address of a web server, the IP address of the web server and the domain name and the target area have mapping relations, so that the domain name resolution server DNS obtains the target list information from the management devices of a plurality of different CDN manufacturers, the target list information provided by the management devices of the plurality of different CDN manufacturers is combined to obtain first list information, and the plurality of management devices belong to different CDN service providers; the target list information comprises an acceleration domain name of a CDN manufacturer, a target area for the CDN manufacturer to provide acceleration service for the acceleration domain name and an IP address of a web server of the CDN manufacturer; dynamically adjusting an overlay scheme, the overlay scheme including parameters relating to quality of service requirements; receiving a domain name resolution request of the LDNS, determining a target area according to an IP address of the LDNS, matching the coverage scheme with related parameters in the first list information, and determining an optimal web server in the target area; the determining an optimal web server in the target area according to the matching of the coverage scheme and the relevant parameters in the first list information includes: the DNS respectively calculates the difference value between the parameter of each web server in the first list information and the same parameter in the coverage template; and determining the web server with the minimum difference value as the optimal web server.
  8. 8. A communication system, comprising: a domain name resolution server DNS and a management device of a CDN service provider;
    the DNS is adapted to perform a method as performed by the DNS in any one of claims 1 to 2;
    the management device is adapted to perform the method as claimed in any of claims 3 to 5.
  9. 9. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed, implements the steps of the method according to any one of claims 1-5.
  10. 10. A computer arrangement comprising a processor, a memory and a computer program stored on the memory, characterized in that the steps of the method according to any of claims 1-5 are implemented when the computer program is executed by the processor.
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