WO2018054307A1 - Cdn业务的处理方法、设备及通信系统 - Google Patents

Cdn业务的处理方法、设备及通信系统 Download PDF

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Publication number
WO2018054307A1
WO2018054307A1 PCT/CN2017/102486 CN2017102486W WO2018054307A1 WO 2018054307 A1 WO2018054307 A1 WO 2018054307A1 CN 2017102486 W CN2017102486 W CN 2017102486W WO 2018054307 A1 WO2018054307 A1 WO 2018054307A1
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WIPO (PCT)
Prior art keywords
domain name
web server
address
target
dns
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PCT/CN2017/102486
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English (en)
French (fr)
Inventor
符立佳
苗辉
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贵州白山云科技有限公司
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Publication of WO2018054307A1 publication Critical patent/WO2018054307A1/zh

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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

Definitions

  • the present invention relates to the field of Internet technologies, and in particular, to a method, a device, and a communication system for processing a CDN service.
  • the Content Delivery Network is a new layer of network architecture added to the existing Internet to publish the content of the website to the "edge" of the network closest to the user, so that users can get the desired content nearby. Thereby solving the congestion of the Internet network and improving the response speed of the user visiting the website.
  • the local domain name resolution server When the local domain name resolution server (LDNS) receives a domain name resolution request sent by a netizen client in the local area (Beijing), the local domain name server (LDNS) sends a domain name resolution server (Domain Name) to the domain name resolution server (Domain Name).
  • Server, DNS sends the domain name resolution request, the DNS accesses the DNS at all levels through recursive resolution, and the DNS feeds back the alias (cname) of the domain name to the LDNS.
  • the LDNS After receiving the alias, the LDNS obtains the alias again through recursive query.
  • the LDNS feeds back the IP address of a web server in the Beijing area to the client of the netizen, and the client accesses the IP address to obtain data.
  • the final IP address is fed back to the client, and at least two recursive resolutions are needed.
  • the first time is that the DNS accesses the DNS at all levels through recursive resolution, and the DNS feeds the alias of the domain name to the LDNS, and the second The LDNS receives the alias and then recursively queries it to obtain the IP address of the web server corresponding to the alias.
  • the domain name resolution efficiency is low, which increases the waiting time of netizens.
  • the embodiments of the present invention provide a method, a device, and a communication system for processing a CDN service, which saves domain name resolution time and improves domain name resolution efficiency.
  • the embodiment of the present invention provides a method for processing a CDN service, including: the domain name resolution server DNS obtains 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 of the web server.
  • the address, the IP address of the web server has a mapping relationship with the domain name and the target area.
  • the DNS receives the domain name resolution request sent by the local domain name resolution server LDNS.
  • the domain name resolution request includes the target domain name and the IP address of the LDNS.
  • the DNS determines the target area according to the IP address of the LDNS; 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.
  • the method may further include: the DNS obtaining the first list information from the management device, including: the DNS periodically acquiring the 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; Determining, according to the first list information, an IP address of the target web server in the target area corresponding to the target domain name, including: the DNS determining, according to the first list information, an IP address of the web server in the target area; the DNS according to the load information of the web server and/or Or the performance status information determines the IP address of the target web server, which is a web server whose load information is better than the threshold and/or the performance status information is better than the threshold.
  • the method may further include: after the DNS receives the domain name resolution request sent by the local domain name resolution server LDNS of the target area, the DNS obtains the second list information of the target area from the management device, where the second list information includes the load information of the web server in the target area. And/or performance status information.
  • the DNS determines, according to the first list information, the IP address of the target web server in the target area corresponding to the target domain name, including: the DNS determines the IP address of the web server in the target area according to the first list information; and the DNS according to the second list information in the web
  • the load information and/or performance status information of the server determines the IP address of the target web server, which is a web server whose load information is better than the threshold and/or the performance status information is better than the threshold.
  • the method may further include: the domain name resolution server DNS obtains the first list information from the management device of the content distribution network CDN service provider, and specifically includes: the DNS obtains the target list information from the plurality of management devices, and the plurality of management devices belong to different CDN service providers.
  • the target 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 target area; the DNS combines the plurality of target list information to obtain the first list information.
  • the embodiment of the present invention further provides a method for processing a CDN service, including: a management device of a content distribution network CDN service provider provides first list information to a domain name resolution server DNS, where the first list information includes a domain name, a target area, and a web server.
  • the IP address of the web server has a mapping relationship between the domain name and the target area.
  • the first list information is used to: when the DNS receives the domain name resolution request sent by the LDNS of the target area, the domain name resolution request includes the target domain name and the IP address of the LDNS.
  • 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.
  • the method may further include: the management device of the CDN service provider provides the first list information to the domain name resolution server DNS, and specifically includes: the management device periodically acquires load information and/or performance status information of each web server in the area. The management device obtains the first list information according to the load information and the IP addresses of the plurality of web servers; the management device periodically provides the first list information to the DNS.
  • the method may further include: the management device receives the request for sending the DNS, and the request includes the target area information; the management device acquires the load information and/or the performance status information of the web server in the target area according to the request; the management device according to the load information of the web server and / or performance status information, IP list information of the web server generates second list information; the management device sends the second list information to the DNS.
  • the embodiment of the invention further provides a domain name resolution server, including:
  • An obtaining module configured to obtain 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, an IP address of a web server, and an IP address of the web server and a domain name and a target area have Mapping relations;
  • the receiving module is configured to receive a domain name resolution request sent by the local domain name resolution server LDNS, where the domain name resolution request includes the target domain name and the IP address of the LDNS;
  • a determining module configured to determine a target area according to an IP address of the LDNS received by the receiving module; and determining, according to the first list information acquired by the obtaining module, an IP address of the target web server in the target area corresponding to the target domain name received by the receiving module;
  • the sending module is configured to send the IP address of the target web server determined by the determining module to the LDNS.
  • the determining module further includes a first determining unit and a second determining unit;
  • the obtaining module is further configured to periodically obtain the 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;
  • a first determining unit configured to determine an IP address of a web server in the target area according to the first list information acquired by the obtaining module
  • a second determining unit configured to determine an IP address of the target web server according to load information and/or performance status information of the web server determined by the first determining unit, where the target web server is superior to the threshold information and/or the performance status information The threshold for the web server.
  • the determining module further includes a first determining unit and a second determining unit;
  • the obtaining module is further configured to obtain second list information of the target area from the management device, where the second list information includes load information and/or performance status information of the web server in the target area;
  • a first determining unit configured to determine an IP address of a web server in the target area according to the first list information acquired by the obtaining module
  • a second determining unit configured to determine an IP address of the target web server according to load information and/or performance status information of the web server in the second list information acquired by the obtaining module, where the target web server is better than the threshold and/or performance of the load information A web server whose status information is better than the threshold.
  • the domain name resolution server further includes a list merge module; the acquisition module is further configured to obtain target list information from a plurality of management devices, the plurality of management devices belong to different CDN service providers, and the target list information includes a domain name, a target area, and an IP of the web server.
  • the address, the IP address of the web server has a mapping relationship with the domain name and the target area; the list merging module combines the target list information acquired by the plurality of obtaining modules to obtain the first list information.
  • the embodiment of the present invention further provides a management device, including: a sending module, configured to provide first list information to a domain name resolution server DNS, where the first list information includes a domain name, a target area, an IP address of a web server, and an IP address of the web server.
  • the mapping between the domain name and the target area is used.
  • the first list information is used to: when the DNS receives the domain name resolution request sent by the LDNS of the target area, the domain name resolution request includes the IP address of the target domain name LDNS, and the IP address of the DNS LDNS determines the target. And determining, according to the first list information, an IP address of the target web server in the target area corresponding to the target domain name, so that the DNS sends the IP address of the target web server to the LDNS.
  • the management device further includes: an acquisition module and a determination module; the acquisition module is set to a periodic partition The domain acquires load information and/or performance status information of each web server in the area; the determining module is configured to obtain the first list information according to the load information acquired by the obtaining module and the IP addresses of the plurality of web servers; the sending module is further configured The first list information determined by the determining module is periodically provided to the DNS.
  • the management device further includes: a receiving module and a generating module.
  • the receiving module is configured to receive a request for DNS transmission, the request including target area information; the obtaining module is further configured to acquire 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 is further configured to generate the second list information according to the load information and/or performance state information of the web server acquired by the obtaining module and the IP list information of the web server.
  • the sending module is further configured to send the second list information generated by the generating module to the DNS.
  • the embodiment of the present invention provides a communication system, including: the domain name resolution server DNS and the management device of the content distribution network CDN service provider.
  • the DNS obtains the first list information from the management device of the content distribution network CDN service provider.
  • the first list information includes IP addresses of the plurality of web servers, and each IP address has a mapping relationship with the domain name.
  • the DNS receives the domain name resolution request sent by the local domain name resolution server LDNS of the target area, and the domain name resolution request includes the target domain name.
  • 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.
  • the embodiment of the present invention has the following advantages: obtaining first list information by using a DNS to a management device of a CDN service provider, where the first list information includes a domain name, a target area, an IP address of a web server, an IP address of the web server, a domain name, and a target area. All of them have a mapping relationship.
  • the DNS receives the domain name resolution request sent by the LDNS of the target area
  • the DNS may 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 the scheduling granularity is more refined.
  • the traditional method needs to switch the service to the CDN service provider by means of cname, and finally obtain the IP address through the secondary recursive parsing method. Greatly saves the parsing time, thus saving the waiting time of netizens.
  • 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 method for processing a CDN service according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another embodiment of a method for processing a CDN service according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of another embodiment of a method for processing a CDN service according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another embodiment of a method for processing a CDN service according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of an embodiment of a domain name resolution server according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of a domain name resolution server according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another embodiment of a domain name resolution server according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an embodiment of a management device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another embodiment of a management device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a method, a device, and a communication system for processing a CDN service.
  • the scheduling granularity is optimized to the IP address of each web server, and the scheduling granularity is more refined.
  • the traditional method needs to switch the service to the service by using an alias.
  • the CDN service provider finally obtains the IP address through the secondary recursive analysis method, which greatly saves the parsing time, thereby saving the waiting time of the netizens.
  • FIG. 1 is a schematic diagram of a communication system.
  • the communication system includes a client 110, a local domain name resolution server LDNS 120, a domain name resolution server DNS 130, and a management device 140.
  • the management device belongs to a CDN service provider. It should be noted that the management device can be understood as a collection of multiple management devices. In the collection of management devices, each management device can belong to different CDN services. Business, or, may also refer to a CDN service provider's management equipment, the specific implementation form, not limited in practical applications.
  • the DNS 130 obtains the first list information from the management device 140 of the CDN service provider.
  • the first list information includes a domain name, a target area, an IP address of the web server, a mapping relationship between the IP address of the web server and the domain name, and an IP address of the web server.
  • the target area has a mapping relationship.
  • a domain name resolution request sent by the client 110 of the target area (for example, Beijing) to the LDNS 120, the domain name resolution request including the target domain name, for example, the target domain name may be www.a.com.
  • the LDNS 120 queries the local cache list. If there is no cache information of the www.a.com in the local cache list, the LDNS 120 sends a domain name resolution request to the DNS 130.
  • the domain name resolution request includes the target domain name and the IP address of the LDNS.
  • the DNS 130 receives the domain name resolution request sent by the local domain name resolution server LDNS of the target area, and the domain name resolution request includes the target domain name and the IP address of the LDNS.
  • the DNS 130 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.
  • the DNS 130 sends the IP address of the target web server to the LDNS 120.
  • the LDNS 120 feeds back the IP address of the target web server to the client 110 of the target area (eg, Beijing).
  • the client 110 initiates a web request to the target web server 150 and retrieves the data.
  • an embodiment of a method for processing a CDN service includes:
  • Step 201 The DNS obtains the first list information from the 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, and the IP address of the web server has a mapping relationship with the domain name, and the IP address of the web server It has a mapping relationship with the target area.
  • the DNS obtains the first list information from the management device, and the specific manner may be: the DNS sends a request to the management device to obtain the first list information, and the DNS feeds back the first list information to the DNS according to the request.
  • the management device may also actively report to the DNS. In actual applications, specific implementation manners are not limited herein.
  • 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.
  • the domain name resolution request includes a target domain name, for example, the target domain name may be www.a.com.
  • LDNS queries the local cache list. If there is no cache information of www.a.com, then The LDNS sends a domain name resolution request to the DNS, and 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.
  • the first list information is shown in Table 1 below:
  • the DNS determines that the IP address of the target web server is "101.101.101.101".
  • Step 204 The DNS sends an IP address of the target web server to the LDNS.
  • the DNS sends the IP address of the target web server to "101.101.101.101" to the LDNS. So that the LDNS will feed back the IP address to the client, and the client sends a request to the web server according to the IP address to obtain the data.
  • the first list information is obtained by using the DNS to the 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, and the IP address of the web server has a mapping relationship with the domain name, and the web The IP address of the server has a mapping relationship with the target area.
  • the DNS receives the domain name resolution request sent by the LDNS of the target area
  • the DNS may determine the target area according to the IP address of the LDNS in the domain name resolution request, and determine according to the target list information.
  • the IP address of the web server in the target area corresponding to the target domain name.
  • the scheduling granularity is optimized to the IP address of each web server, and the scheduling granularity is more refined; and the method of switching the service to the CDN service provider by the cname method in the traditional method and finally obtaining the IP address through the secondary recursive parsing method is changed.
  • the big saves the parsing time, which saves the waiting time of netizens.
  • the service domain name cname need not be accelerated to the CDN to accelerate the domain name, and the information of the service provider is not disclosed.
  • cname is "www.a.nn.com"
  • nn is the name of the CDN service provider. It is easy to know from the cname which customers are served by the CDN service provider and it is easy to disclose business information.
  • the CDN service is not introduced by means of cname, but the first list information is directly obtained from the management device through the authoritative DNS, and the IP address of the serviceable web server is obtained to implement the introduction of the CDN service, so that it can be effective. Protect the information of the CDN service provider.
  • another embodiment of a method for processing a CDN service includes:
  • Step 301 The management device periodically obtains the first list information in the area.
  • the management device periodically acquires load information and/or performance status information of each web server in the area.
  • the management device generates first list information based on the load information and IP addresses of the plurality of web servers.
  • the management device manages three regions of the web server, and the three regions are three regions of “Beijing”, “Shanghai” and “Guangdong”, and each region may include at least one web server. It should be noted that the three regions are merely illustrative and not a limited description of the scope of the region.
  • the management device may first obtain the IP list of the original web server in different regions by region. Then, the management device sub-area acquires load information, performance status information, and the like of each web server in each area.
  • the performance status information may be the line speed of the web server, the load range that the web server can handle, throughput, response time, and the like.
  • the management device may filter the IP address of the original web server according to the load information and/or performance status information of each web server, and filter out the target web server whose load information and/or performance status information is better than the threshold, and finally determine
  • the first list information includes an IP address of the web server, load information and/or performance status information of the web server.
  • the web server that filters the load information better than the first threshold may be considered as the target web server only considering the load information.
  • the web server that filters the performance status information better than the second threshold is the target web server.
  • Both the load information and the performance status information are better than the threshold and determined as the target web server.
  • 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, so that 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.
  • a domain name resolution request sent by a client of a target area (for example, Beijing) to the LDNS the domain name resolution request includes a target domain name, for example, the target domain name may be www.a.com.
  • the LDNS queries the local cache list. If there is no cache information of www.a.com, the LDNS sends a domain name resolution request to the DNS, and the domain name resolution request includes the target domain name and the IP address of the LDNS.
  • Step 304 The DNS determines a target area according to the IP address of the LDNS, and determines an IP address of the target web server in the target area corresponding to the target domain name according to the first list information periodically received.
  • Step 305 The DNS sends an IP address of the target web server to the LDNS.
  • the first list information is obtained by using the DNS to the management device of the CDN service provider, where the first list information includes the IP address of the web server that has a mapping relationship with the domain name, and the DNS receives the domain name sent by the LDNS of the target area.
  • the DNS may 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 the scheduling granularity is more refined; and the method of switching the service to the CDN service provider by the cname method in the traditional method and finally obtaining the IP address through the secondary recursive parsing method is changed.
  • the big saves the parsing time, which saves the waiting time of netizens.
  • another embodiment of a method for processing a CDN service includes:
  • Step 401 The DNS periodically acquires target list information from multiple management devices.
  • the plurality of management devices belong to different CDN service providers, and the target list information includes IP addresses of multiple web servers, domain names, target areas, and the IP addresses of each web server have a mapping relationship with the domain name, and each The IP address of the web server has a mapping relationship with the target area.
  • Each management device periodically reports the target list information. This step can be understood in conjunction with steps 301 to 303 in the embodiment corresponding to FIG. 3 . I will not go into details here.
  • Step 402 The DNS combines the plurality of target list information to obtain the first list information.
  • the DNS combines the plurality of target list information to obtain the first list information, that is, the first list information includes information of the web server managed by the management devices of the plurality of CDN service providers, and the first list information is one.
  • the database of the web server includes information of the web server managed by the management devices of the plurality of CDN service providers, and the first list information is one.
  • Step 403 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.
  • a domain name resolution request sent by a client of a target area (for example, Beijing) to the LDNS the domain name resolution request includes a target domain name, for example, the target domain name may be www.a.com.
  • the LDNS queries the local cache list. If there is no cache information of www.a.com, the LDNS sends a domain name resolution request to the DNS, and 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 an 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.
  • the coverage scheme may include: according to quality of service requirements, a target area (for example, Beijing), load information of a web server, performance status information, and the like. parameter.
  • the DNS can match the relevant parameters in the first list information according to its own coverage scheme.
  • the IP address of the optimal web server is finally determined.
  • the IP address of the web server corresponding to the target domain name in the first list information may be two, respectively: the first web server of the first CDN service provider reported by the first management device, and the IP address of the first web server. It is "101.101.101.101".
  • the other is the second web server of the second CDN service provider reported by the second management device, and the 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 separately calculate the difference value of the parameters of each web server in the first list information and the same parameters in the overlay template.
  • the parameters are exemplified by load information.
  • the difference value between the load information of each web server and the load information in the overlay template can be separately calculated, so that two difference values are calculated, and then the magnitudes of the two difference values are compared, and the smaller the difference value indicates the load of the web server. The more information you want begging.
  • the target web server is further determined in the two web services. It should be noted that the above method is merely illustrative and not limiting, and the specific method is not limited herein.
  • Step 405 The DNS sends the IP address of the target web server to the LDNS.
  • the DNS may acquire the target list information of the multiple management devices periodically, and the multiple management devices belong to different service providers, and combine the target list information reported by the multiple management devices to obtain the first list information.
  • the DNS can determine the IP address of the target web server according to the quality of service requirements. The scheduling granularity is optimized to the IP address of each web server, and the scheduling granularity is more refined.
  • the traditional method is used to switch the service to the CDN service provider through the cname method, and finally obtain the IP address through the secondary recursive parsing method. It saves the parsing time, which saves the waiting time of netizens. And improve the quality of service, so that the target web server performance indicators accessed by netizens are improved.
  • another embodiment of a method for processing a CDN service includes:
  • Step 501 The domain name resolution server DNS obtains the first list information from the management device of the content distribution network CDN service provider.
  • the first list information includes a domain name, a target area, and an IP address of the web server, and the IP address of the web server has a mapping relationship with the domain name.
  • the IP address of the web server has a mapping relationship with the target area. This step is understood in conjunction with 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 is understood in conjunction with step 202 in the embodiment corresponding to 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 an IP address of the web server in the target area according to the first list information.
  • the DNS determines, according to the first list information, two web servers in the Beijing area, and the IP addresses are: "101.101.101.101” and "202.202.202.202", respectively.
  • IP address of the web server in the embodiment of the present invention is an example, and Not a limited description.
  • Step 505 The DNS determines an IP address of the target web server according to load information and/or performance status information of the web server in the second list information.
  • the target web server is a target web server whose load information is better than a threshold and/or performance status information is better than a threshold.
  • the DNS further determines the IP address of the target web server according to the IP address in the second list information for the load information and/or performance status information of the two web servers of "101.101.101.101” and "202.202.202.202", respectively.
  • the DNS first obtains the first list information from the management device, where the first list information includes the IP addresses of the plurality of web servers.
  • the DNS receives the domain name resolution request sent by the LDNS
  • the DNS obtains the second list information from the management device, where the second list information includes load information and/or performance status information of the web server, and the DNS is based on the first list information and the second list. The information is used to comprehensively determine the IP address information of the target web server.
  • Step 506 The DNS sends the IP address of the target web server to the LDNS.
  • an embodiment of the domain name resolution server 600 is provided by an embodiment of the present invention, including:
  • the obtaining module 610 is configured to obtain first list information from a management device of the content distribution network CDN service provider, where the first list information includes a domain name, a target area, an IP address of the web server, and an IP address of the web server has a mapping relationship with the domain name, web The IP address of the server has a mapping relationship with the target area;
  • the receiving module 620 is configured to receive a domain name resolution request sent by the local domain name resolution server LDNS of the target area, where the domain name resolution request includes the target domain name and the IP address of the LDNS;
  • the determining module 630 is configured to determine the target area according to the IP address of the receiving module 610LDNS, and determine, according to the first list information acquired by the obtaining module 610, the IP of the target web server in the target area corresponding to the target domain name received by the receiving module 620. address;
  • the sending module 640 is arranged to send the IP address of the target web server determined by the determining module 630 to the LDNS.
  • FIG. 6 another embodiment of the domain name resolution server 700 is further provided by the embodiment of the present invention, including:
  • 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: the first determining unit 631 is configured to determine an IP address of the web server in the target area according to the first list information acquired by the obtaining module 610; the second determining unit 632 is configured to determine according to the first determining unit The load information and/or performance status information of the web server determines the IP address of the target web server, the target web server is the load server superior to the threshold, and/or the performance status information is superior to the threshold web server.
  • the obtaining module 610 is further configured to acquire, by the management device, second list information of the target area, where the second list information includes load information and/or performance status information of the web server in the target area;
  • the first determining unit 631 is configured to determine an IP address of the web server in the target area according to the first list information acquired by the obtaining module 610;
  • the second determining unit 632 is configured to determine an IP address of the target web server according to the load information and/or performance state information of the web server in the second list information acquired by the obtaining module 610, where the target web server is the load information is better than the threshold, and/ Or, the performance status information is better than the threshold of the web server.
  • FIG. 6 another embodiment of the domain name resolution server 800 is further provided by the embodiment of the present invention, including: a list merge module 650.
  • the obtaining module 610 is further configured to acquire target list information from a plurality of management devices, the plurality of management devices belonging to different CDN service providers, the target list information including a domain name, a target area, an IP address of the web server, and an IP address of the web server and Both the domain name and the target area have a mapping relationship;
  • the list merging module 650 is configured to combine the target list information acquired by the plurality of obtaining modules 610 to obtain the first list information.
  • an embodiment of the present invention provides a management device 900.
  • the method includes: a sending module 930, configured to provide first list information to a domain name resolution server DNS, where the first list information includes a domain name, a target area, and a web server. IP address, web server IP address and domain name and target The area has a mapping relationship.
  • the first list information is used when the DNS receives the domain name resolution request sent by the LDNS of the target area, the domain name resolution request includes the target domain name and the IP address of the LDNS, and the DNS determines the target area according to the IP address of the LDNS, and Determining, according to the first list information, an IP address of the target web server in the target area corresponding to the target domain name, so that the DNS sends the IP address of the target web server to the LDNS.
  • the obtaining module 910 is configured to acquire the load information and/or performance status information of each web server in the area by the periodic sub-area;
  • the determining module 920 is configured to obtain first list information according to the load information and/or performance state information acquired by the obtaining module 910 and the IP addresses of the plurality of web servers;
  • the sending module 930 is further configured to periodically provide the DNS with the first list information determined by the determining module 920.
  • an embodiment of the present invention provides a receiving module 940 and a generating module 950.
  • the receiving module 940 is configured to receive a request sent by the DNS, where the request includes target area information;
  • the obtaining module 910 is further configured to acquire 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 acquired by the obtaining module 910 and the IP list information of the web server;
  • the sending module 930 is further configured to send the second list information generated by the generating module 950 to the DNS.
  • the DNS may determine the target 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 the scheduling granularity is more refined.
  • the embodiment of the present invention also changes the manner in which the traditional method needs to switch the service to the CDN service provider by using the cname method, and finally obtains the IP address through the secondary recursive parsing method, thereby greatly saving the parsing time, thereby saving the netizen's waiting time.

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Abstract

本文公开了CDN业务的处理方法、设备及通信系统，用于提高域名解析效率。本文的CDN业务的处理方法包括：域名解析服务器DNS从内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系；DNS接收本地域名解析服务器LDNS发送的域名解析请求，域名解析请求包括目标域名和LDNS的IP地址；DNS根据所述LDNS的IP地址确定目标区域，并根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址；DNS向LDNS发送目标Web服务器的IP地址。本发明实施例还提供了域名解析服务器、管理设备及通信系统。

Description

CDN业务的处理方法、设备及通信系统
[根据细则26改正19.12.2017]　
本申请要求在2016年9月20日提交中国专利局、申请号为201610834986.1、发明名称为“CDN业务的处理方法、设备及通信系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及互联网技术领域，具体而言，涉及一种CDN业务的处理方法、设备及通信系统。
背景技术
内容分发网络(Content Delivery Network，CDN)是通过现有的因特网中增加一层新的网络架构，将网站的内容发布到最接近用户的网络“边缘”，使用户可以就近取得所需的内容，从而解决因特网网络拥塞状况，提高用户访问网站的响应速度。
当本地域名解析服务器(Local Domain Name Server，LDNS)接收到本地区(北京)的一个网民客户端发送的域名解析请求时，本地域名服务器(Local Domain Name Server，LDNS)向域名解析服务器(Domain Name Server，DNS)发送该域名解析请求，DNS通过递归解析依次访问各级DNS的过程中，DNS将该域名的别名(cname)反馈给LDNS，LDNS接收到别名后，再次通过递归查询，得到该别名对应web服务器的IP地址，LDNS将解析得到的北京地区的一个web服务器的IP地址反馈给该网民的客户端，该客户端访问该IP地址获取数据。
上述方法中，将最终的IP地址反馈给客户端，至少需要两次递归解析，第一次是DNS通过递归解析依次访问各级DNS的过程中，DNS将该域名的别名反馈给LDNS，第二次是LDNS接收到别名后，再次通过递归查询，得到该别名对应的web服务器的IP地址。域名解析效率较低，增加了网民的等待的时间。
发明内容
本发明实施例提供了CDN业务的处理方法、设备及通信系统，节省域名解析时间，提高域名解析效率。
本发明实施例提供了一种CDN业务的处理方法，包括：域名解析服务器DNS从内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系。DNS接收本地域名解析服务器LDNS发送的域名解析请求，域名解析请求包括目标域名和LDNS的IP地址。DNS根据LDNS的IP地址确定目标区域；DNS根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址。DNS向LDNS发送目标Web服务器的IP地址。
上述方法还可包括：DNS从管理设备获取第一列表信息，包括：DNS周期性的向管理设备获取第一列表信息，第一列表信息还包括web服务器的负载信息和/或性能状态信息；DNS根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址，包括:DNS根据第一列表信息确定目标区域内的web服务器的IP地址；DNS根据web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址，目标web服务器为负载信息优于阈值和/或性能状态信息优于阈值的web服务器。
上述方法还可包括：DNS接收目标区域的本地域名解析服务器LDNS发送的域名解析请求之后，DNS向管理设备获取目标区域的第二列表信息，第二列表信息包括目标区域内的web服务器的负载信息和/或性能状态信息。DNS根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址，包括：DNS根据第一列表信息确定目标区域内的web服务器的IP地址；DNS根据第二列表信息中web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址，目标web服务器为负载信息优于阈值和/或性能状态信息优于阈值的web服务器。
上述方法还可包括：域名解析服务器DNS从内容分发网络CDN服务商的管理设备获取第一列表信息，具体包括：DNS从多个管理设备获取目标列表信息，多个管理设备属于不同的CDN服务商，目标列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系；DNS将多个目标列表信息进行合并，得到第一列表信息。
本发明实施例还提供了一种CDN业务的处理方法，包括：内容分发网络CDN服务商的管理设备向域名解析服务器DNS提供第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系，第一列表信息用于：当DNS接收到目标区域的LDNS发送的域名解析请求时，域名解析请求包括目标域名和LDNS的IP地址，DNS根据LDNS的IP地址确定目标区域，并根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址，以使DNS向LDNS发送目标Web服务器的IP地址。
上述方法还可包括：CDN服务商的管理设备向域名解析服务器DNS提供第一列表信息，具体包括：管理设备周期性的分区域获取区域内的每个web服务器的负载信息和/或性能状态信息；管理设备根据负载信息和多个web服务器的IP地址得到第一列表信息；管理设备周期性的向DNS提供第一列表信息。
上述方法还可包括：管理设备接收DNS发送的请求，请求包括目标区域信息；管理设备根据请求获取目标区域内的web服务器的负载信息和/或性能状态信息；管理设备根据web服务器的负载信息和/或性能状态信息、web服务器的IP列表信息生成第二列表信息；管理设备向DNS发送第二列表信息。
本发明实施例还提供了域名解析服务器，包括：
获取模块，被设置为从内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系；
接收模块，被设置为接收本地域名解析服务器LDNS发送的域名解析请求，域名解析请求包括目标域名和LDNS的IP地址；
确定模块，被设置为根据接收模块接收的LDNS的IP地址确定目标区域；及根据获取模块获取的第一列表信息，确定接收模块接收的目标域名对应的目标区域中的目标Web服务器的IP地址；
发送模块，被设置为向LDNS发送确定模块确定的目标Web服务器的IP地址。
域名解析服务器中，确定模块还包括第一确定单元和第二确定单元；
获取模块，还被设置为周期性的向管理设备获取第一列表信息，第一列表信息还包括web服务器的负载信息和/或性能状态信息；
第一确定单元，被设置为根据获取模块获取的第一列表信息确定目标区域内的web服务器的IP地址；
第二确定单元，被设置为根据第一确定单元确定的web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址，目标web服务器为负载信息优于阈值和/或性能状态信息优于阈值的web服务器。
域名解析服务器中，确定模块还包括第一确定单元和第二确定单元；
获取模块，还被设置为从管理设备获取目标区域的第二列表信息，第二列表信息包括目标区域内的web服务器的负载信息和/或性能状态信息；
第一确定单元，被设置为根据获取模块获取的第一列表信息确定目标区域内的web服务器的IP地址；
第二确定单元，被设置为根据获取模块获取的第二列表信息中web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址，目标web服务器为负载信息优于阈值和/或性能状态信息优于阈值的web服务器。
域名解析服务器中还包括列表合并模块；获取模块还被设置为从多个管理设备获取目标列表信息，多个管理设备属于不同的CDN服务商，目标列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系；列表合并模块，将多个获取模块获取的目标列表信息进行合并，得到第一列表信息。
本发明实施例还提供了管理设备，包括：发送模块，被设置为向域名解析服务器DNS提供第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系，第一列表信息用于：当DNS接收到目标区域的LDNS发送的域名解析请求时，域名解析请求包括目标域名LDNS的IP地址，DNS LDNS的IP地址确定目标区域，并根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址，以使DNS向LDNS发送目标Web服务器的IP地址。
管理设备还包括：获取模块和确定模块；获取模块被设置为周期性的分区 域获取区域内的每个web服务器的负载信息和/或性能状态信息；确定模块被设置为根据获取模块获取的负载信息和多个web服务器的IP地址得到第一列表信息；发送模块还被设置为周期性的向DNS提供确定模块确定的第一列表信息。
管理设备还包括：接收模块和生成模块。接收模块被设置为接收DNS发送的请求，请求包括目标区域信息；获取模块还被设置为根据接收模块接收的请求获取目标区域内的web服务器的负载信息和/或性能状态信息。生成模块还被设置为根据获取模块获取的web服务器的负载信息和/或性能状态信息、web服务器的IP列表信息生成第二列表信息。发送模块还被设置为向DNS发送生成模块生成的第二列表信息。
本发明实施例提供了通信系统，包括：上述域名解析服务器DNS和上述内容分发网络CDN服务商的管理设备。
DNS向内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括多个web服务器的IP地址，每个IP地址与域名具有映射关系。DNS接收目标区域的本地域名解析服务器LDNS发送的域名解析请求，域名解析请求包括目标域名。DNS根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址。DNS向LDNS发送目标Web服务器的IP地址。
本发明实施例具有以下优点：通过DNS向CDN服务商的管理设备获取第一列表信息，该第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系，当DNS接收到目标区域的LDNS发送的域名解析请求时，该DNS可以根据目标列表信息，确定出目标域名对应的目标区域中的Web服务器的IP地址。调度粒度优化到每个Web服务器的IP地址，调度粒度更加细化；而且改变了传统方法中需要通过cname的方式将业务切换给CDN服务商，再通过二次递归解析方式最终得到IP地址的方式，极大的节省了解析时间，从而节省了网民的等待时间。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分， 本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为本发明实施例中的通信系统的示意图；
图2为本发明实施例中的CDN业务的处理方法的一个实施例示意图；
图3为本发明实施例中的CDN业务的处理方法的另一个实施例示意图；
图4为本发明实施例中的CDN业务的处理方法的另一个实施例示意图；
图5为本发明实施例中的CDN业务的处理方法的另一个实施例示意图；
图6为本发明实施例中的域名解析服务器的一个实施例结构示意图；
图7为本发明实施例中的域名解析服务器的另一个实施例结构示意图；
图8为本发明实施例中的域名解析服务器的另一个实施例结构示意图；
图9为本发明实施例中的管理设备的一个实施例结构示意图；
图10为本发明实施例中的管理设备的另一个实施例结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
本发明实施例提供了CDN业务的处理方法、设备及通信系统，调度粒度优化到每个Web服务器的IP地址，调度粒度更加细化；而且改变了传统方法中需要通过别名的方式将业务切换给CDN服务商，再通过二次递归解析方式最终得到IP地址的方式，极大的节省了解析时间，从而节省了网民的等待时间。
本发明实施例提供了CDN业务的处理方法，该方法用于一种通信系统，请参阅图1所示，图1为通信系统的示意图。该通信系统包括客户端110、本地域名解析服务器LDNS120、域名解析服务器DNS130、管理设备140。该管理设备属于CDN服务商，需要说明的是，该管理设备可以理解为多个管理设备的集合，在该管理设备的集合中，每个管理设备可以属于不同的CDN服 务商，或者，也可以指一个CDN服务商的管理设备，具体的实现形式，在实际应用不限定。
DNS 130从CDN服务商的管理设备140获取第一列表信息，该第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名具有映射关系，web服务器的IP地址与目标区域具有映射关系。目标区域(例如，北京)的客户端110向LDNS120发送的域名解析请求，该域名解析请求包括目标域名，例如目标域名可以为www.a.com。LDNS120查询本地缓存列表，若本地缓存列表中没有www.a.com的缓存信息，则LDNS 120向DNS130发送域名解析请求，域名解析请求包括目标域名和LDNS的IP地址。DNS130接收目标区域的本地域名解析服务器LDNS发送的域名解析请求，该域名解析请求包括目标域名和LDNS的IP地址。
DNS130根据LDNS的IP地址确定目标区域，并根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址。DNS130向LDNS120发送目标Web服务器的IP地址。LDNS120向目标区域(例如，北京)的客户端110反馈目标Web服务器的IP地址。客户端110向目标Web服务器150发起web请求，并取得数据。
请参阅图2，本发明实施例提供了CDN业务的处理方法的一个实施例包括：
步骤201、DNS从CDN服务商的管理设备获取第一列表信息，此第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名具有映射关系，web服务器的IP地址与目标区域具有映射关系。DNS从管理设备获取第一列表信息，获取的具体方式可以为：DNS向管理设备发送被设置为获取第一列表信息的请求，该DNS根据该请求向DNS反馈第一列表信息。或者，也可以为管理设备主动向该DNS上报。在实际应用中，具体的实现方式，本发明此处不限定。
步骤202、LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名和LDNS的IP地址。例如，目标区域(例如，北京)的客户端向LDNS发送的域名解析请求，该域名解析请求包括目标域名，例如该目标域名可以为www.a.com。LDNS查询本地缓存列表，若没有www.a.com的缓存信息，则该 LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名。
步骤203、DNS根据该第一列表信息，确定该目标域名对应的目标区域中的目标Web服务器的IP地址；
例如，第一列表信息如下表1所示：
表1
目标域名 目标区域 IP地址
www.a.com beijing 101.101.101.101
www.a.com shanghai 202.202.202.202
www.a.com guangdong 303.303.303.303
若目标区域是北京，则DNS确定目标web服务器的IP地址为“101.101.101.101”。
步骤204、DNS向该LDNS发送该目标Web服务器的IP地址。
DNS将目标web服务器的IP地址为“101.101.101.101”向LDNS发送。以使得LDNS将给IP地址反馈给客户端，客户端根据该IP地址向web服务器发送请求，以获得数据。
本发明实施例中，通过DNS向CDN服务商的管理设备获取第一列表信息，该第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名具有映射关系，web服务器的IP地址与目标区域具有映射关系，当DNS接收到目标区域的LDNS发送的域名解析请求时，该DNS可以根据域名解析请求中的LDNS的IP地址确定目标区域，并根据目标列表信息，确定出目标域名对应的目标区域中的Web服务器的IP地址。调度粒度优化到每个Web服务器的IP地址，调度粒度更加细化；而且改变了传统方法中通过cname方式将业务切换给CDN服务商，再通过二次递归解析方式最终得到IP地址的方式，极大的节省了解析时间，从而节省了网民的等待时间。本发明实施例中，由于没有跨域cname，不需要将业务域名cname给CDN加速域名，不会泄露服务商的信息。例如，若目标域名为www.a.com，传统方法中，cname为“www.a.nn.com”，在www.a.nn.com中，“nn”为CDN服务商的名称， 从该cname中很容易知道，CDN服务商服务了哪些客户，容易泄露商务信息。本发明实施例中，并不是通过cname的方式来引入CDN业务，而是通过权威DNS从管理设备直接获取第一列表信息，获取可服务的web服务器的IP地址来实现引入CDN业务，因此可以有效的保护CDN服务商的信息。
请参阅图3，本发明实施例提供了CDN业务的处理方法的另一个实施例包括：
步骤301、管理设备周期性的分区域获取该区域内的第一列表信息。
具体的，该管理设备周期性的分区域获取该区域内的每个web服务器的负载信息和/或性能状态信息。该管理设备根据该负载信息和多个web服务器的IP地址生成第一列表信息。
可以理解的是，例如，管理设备管理三个区域的web服务器，三个区域分别为“北京”，“上海”和“广东”三个区域，每个区域可以包括至少一个web服务器。需要说明的是，该三个区域只是举例说明，而非对区域的范围的限定性说明。
在一种实现方式中，管理设备首先可以分区域的获取不同区域的原始的web服务器的IP列表。然后，该管理设备分区域的获取每个区域内的每个web服务器的负载信息、性能状态信息等。例如，该性能状态信息可以为web服务器的线路速度，web服务器能够处理的负载范围，吞吐能力和响应时间等。该管理设备可以根据每个web服务器的负载信息和/或性能状态信息在原始的web服务器的IP列表中进行筛选，筛选出负载信息和/或性能状态信息优于阈值的目标web服务器，最后确定出第一列表信息，该第一列表信息中包括web服务器的IP地址，该web服务器的负载信息和/或性能状态信息。
需要说明的是，在通过负载信息和/或性能状态信息进行筛选目标web服务器的过程中，可以包括很多方案，下面进行举例说明。
例如，(1)可以只考虑负载信息，筛选负载信息优于第一阈值的web服务器为目标web服务器。(2)只考虑性能状态信息，筛选性能状态信息优于第二阈值的web服务器为目标web服务器。(3)综合计算负载信息和性能状态信息权重，根据该权重确定目标web服务器。(4)负载信息和性能状态信息均优于阈值，确定为目标web服务器。上述方法只是举例说明，而并非限定 性说明，在实际应用中，具体的方法此处不限定。
步骤302、该管理设备周期性的向该DNS发送该第一列表信息。管理设备周期性的向该DNS发送该第一列表信息，以使得该第一列表信息可以周期性更新，使得web服务器调度更准确。
步骤303、LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名和LDNS的IP地址。
例如，目标区域(例如，北京)的客户端向LDNS发送的域名解析请求，该域名解析请求包括目标域名，例如目标域名可以为www.a.com。LDNS查询本地缓存列表，若没有www.a.com的缓存信息，则该LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名和LDNS的IP地址。
步骤304、该DNS根据LDNS的IP地址确定目标区域，并根据周期性接收的该第一列表信息，确定该目标域名对应的目标区域中的目标Web服务器的IP地址。
例如，该DNS最后确定出的目标web服务器的IP地址为“202.202.202.202”，该目标web服务器的服务地址为北京，可用带宽为“10G”。步骤305、该DNS向该LDNS发送该目标Web服务器的IP地址。
本发明实施例中，通过DNS向CDN服务商的管理设备获取第一列表信息，该第一列表信息包括与域名具有映射关系的web服务器的IP地址，当DNS接收到目标区域的LDNS发送的域名解析请求时，该DNS可以根据目标列表信息，确定出目标域名对应的目标区域中的Web服务器的IP地址。调度粒度优化到每个Web服务器的IP地址，调度粒度更加细化；而且改变了传统方法中通过cname方式将业务切换给CDN服务商，再通过二次递归解析方式最终得到IP地址的方式，极大的节省了解析时间，从而节省了网民的等待时间。
请参阅图4，本发明实施例提供了CDN业务的处理方法的另一个实施例包括：
步骤401、DNS周期性的从多个管理设备获取目标列表信息。多个管理设备属于不同的CDN服务商，目标列表信息包括多个web服务器的IP地址，域名、目标区域，每个web服务器的IP地址与域名具有映射关系，每个 web服务器的IP地址与目标区域具有映射关系。每个管理设备周期性上报目标列表信息，本步骤可以结合图3对应的实施例中的步骤301至步骤303进行理解。此处不赘述。
步骤402、该DNS将多个目标列表信息进行合并，得到第一列表信息。
DNS将多个目标列表信息进行合并，得到第一列表信息，也就是说，该第一列表信息包括了多个CDN服务商的管理设备所管理的web服务器的信息，该第一列表信息为一个web服务器的数据库。
步骤403、LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名和LDNS的IP地址。
例如，目标区域(例如，北京)的客户端向LDNS发送的域名解析请求，该域名解析请求包括目标域名，例如该目标域名可以为www.a.com。LDNS查询本地缓存列表，若没有www.a.com的缓存信息，则该LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名。
步骤404、DNS根据LDNS的IP地址确定目标区域，并根据第一列表信息，确定目标域名对应的目标区域中的目标Web服务器的IP地址。
DNS包括动态调整的覆盖方案，该覆盖方案可以理解为服务质量要求，例如，该覆盖方案可以包括：可以根据服务质量要求、目标区域(例如，北京)、web服务器的负载信息、性能状态信息等参数。
DNS可以根据自身的覆盖方案与第一列表信息中的相关参数进行匹配。最终确定最优的web服务器的IP地址。例如，第一列表信息中目标域名所对应的web服务器的IP地址可以有两个，分别为：第一管理设备上报的第一CDN服务商的第一web服务器，该第一web服务器的IP地址为“101.101.101.101”。另一个是第二管理设备上报的第二CDN服务商的第二web服务器，该第二web服务器的IP地址为“202.202.202.202”。
进一步确定目标web服务器的具体方法可以为：DNS可以分别计算第一列表信息中的每一个web服务器的参数与覆盖模板中的相同参数的差异值。例如，参数以负载信息进行举例说明。可以分别计算每一个web服务器的负载信息与覆盖模板中的负载信息的差异值，这样就会计算出两个差异值，然后比较这两个差异值的大小，差异值越小表明该web服务器的负载信息越符合要 求。进一步在两个web服务中确定出目标web服务器。需要说明的是，上述方法只是举例说明，并非限定性说明，在实际应用中具体的方法，此处不限定。
步骤405、DNS向LDNS发送目标Web服务器的IP地址。
本发明实施例中，DNS可以周期性的获取多个管理设备的目标列表信息，多个管理设备属于不同的服务商，并且将多个管理设备上报的目标列表信息进行合并，得到第一列表信息，从而得到多个CDN服务商的服务信息，DNS可以根据服务质量要求来确定目标web服务器的IP地址。调度粒度优化到每个Web服务器的IP地址，调度粒度更加细化；改变了传统方法中通过cname方式将业务切换给CDN服务商，再通过二次递归解析方式最终得到IP地址的方式，极大的节省了解析时间，从而节省了网民的等待时间。并且提高了服务质量，从而使网民访问的目标web服务器性能指标得到提升。
请参阅图5所示，本发明实施例还提供了CDN业务的处理方法的另一个实施例包括：
步骤501、域名解析服务器DNS向内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名具有映射关系，web服务器的IP地址与目标区域具有映射关系。本步骤请结合图2对应的实施例中的步骤201进行理解。
步骤502、LDNS向DNS发送域名解析请求，该域名解析请求包括目标域名和LDNS的IP地址。
本步骤请结合图2对应的实施例中的步骤202进行理解。
步骤503、DNS根据域名解析请求向管理设备获取目标区域的第二列表信息，第二列表信息包括目标区域内的web服务器的负载信息和/或性能状态信息。
步骤504、DNS根据第一列表信息确定目标区域内的web服务器的IP地址。
例如，DNS根据第一列表信息确定北京区域内的两个web服务器，的IP地址为分别为：“101.101.101.101”和“202.202.202.202”。
需要说明的是，本发明实施例中的web服务器的IP地址为举例说明，而 并非限定性说明。
步骤505、DNS根据第二列表信息中web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址。
目标web服务器为负载信息优于阈值和/或性能状态信息优于阈值的目标web服务器。
DNS再根据第二列表信息中的IP地址为分别为：“101.101.101.101”和“202.202.202.202”的这两个web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址。
例如，IP地址为“101.101.101.101”的web服务器的负载信息和性能状态信息均优于阈值，则确定“101.101.101.101”为目标web服务器的IP地址。
本发明实施例中，DNS先向管理设备获取第一列表信息，第一列表信息包括多个web服务器的IP地址。当DNS接收到LDNS发送的域名解析请求后，DNS再向管理设备获取第二列表信息，第二列表信息包括web服务器的负载信息和/或性能状态信息，DNS根据第一列表信息和第二列表信息来综合确定目标web服务器的IP地址信息。
步骤506、DNS向LDNS发送目标Web服务器的IP地址。
请参阅图6所示，本发明实施例提供了域名解析服务器600的一个实施例包括：
获取模块610被设置为从内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名具有映射关系，web服务器的IP地址与目标区域具有映射关系；接收模块620，被设置为接收目标区域的本地域名解析服务器LDNS发送的域名解析请求，域名解析请求包括目标域名和LDNS的IP地址；
确定模块630被设置为根据接收模块610LDNS的IP地址确定目标区域，并根据获取模块610获取的该第一列表信息，确定接收模块620接收的该目标域名对应的目标区域中的目标Web服务器的IP地址；
发送模块640被设置为向LDNS发送确定模块630确定的目标Web服务器的IP地址。
在图6对应的实施例的基础上，本发明实施例还提供了域名解析服务器700的另一个实施例包括：
确定模块630还包括第一确定单元631和第二确定单元632。
获取模块610还被设置为周期性的向管理设备获取第一列表信息，第一列表信息还包括web服务器的负载信息和/或性能状态信息；
确定模块630还包括：第一确定单元631被设置为根据获取模块610获取的第一列表信息确定目标区域内的web服务器的IP地址；第二确定单元632被设置为根据该第一确定单元确定的web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址，该目标web服务器为负载信息优于阈值，和/或，性能状态信息优于阈值的web服务器。
在另一种实现方式中，获取模块610还被设置为向管理设备获取目标区域的第二列表信息，第二列表信息包括目标区域内的web服务器的负载信息和/或性能状态信息；
第一确定单元631被设置为根据获取模块610获取的该第一列表信息确定目标区域内的web服务器的IP地址；
第二确定单元632被设置为根据获取模块610获取的第二列表信息中web服务器的负载信息和/或性能状态信息确定目标web服务器的IP地址，目标web服务器为负载信息优于阈值，和/或，性能状态信息优于阈值的web服务器。
在图6对应的实施例的基础上，本发明实施例还提供了域名解析服务器800的另一个实施例包括：列表合并模块650。
获取模块610还被设置为向多个管理设备获取目标列表信息，多个管理设备属于不同的CDN服务商，该目标列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标区域均具有映射关系；
列表合并模块650被设置为将多个该获取模块610获取的目标列表信息进行合并，得到该第一列表信息。
请参阅图9，本发明实施例提供了管理设备900的一个实施例包括：发送模块930，被设置为向域名解析服务器DNS提供第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，web服务器的IP地址与域名和目标 区域均具有映射关系，第一列表信息用于当DNS接收到目标区域的LDNS发送的域名解析请求时，域名解析请求包括目标域名和LDNS的IP地址，DNS根据LDNS的IP地址确定目标区域，并根据第一列表信息，确定该目标域名对应的目标区域中的目标Web服务器的IP地址，以使DNS向LDNS发送目标Web服务器的IP地址。
获取模块910被设置为该周期性的分区域获取该区域内的每个web服务器的负载信息和/或性能状态信息；
确定模块920被设置为根据该获取模块910获取的负载信息和/或性能状态信息、多个web服务器的IP地址得到第一列表信息；
在另一实现方式中，发送模块930还被设置为周期性的向DNS提供确定模块920确定的该第一列表信息。
在图9对应的实施例的基础上，请参阅图10所示，本发明实施例提供了管理设备1000的一个实施例包括：接收模块940和生成模块950。接收模块940，被设置为接收DNS发送的请求，该请求包括目标区域信息；
获取模块910还被设置为根据接收模块接收的请求获取该目标区域内的web服务器的负载信息和/或性能状态信息；
生成模块950还被设置为根据获取模块910获取的web服务器的负载信息和/或性能状态信息、web服务器的IP列表信息生成第二列表信息；
发送模块930还被设置为向该DNS发送生成模块950生成的第二列表信息。所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
工业实用性
本发明实施例中通过DNS向CDN服务商的管理设备获取第一列表信息，使DNS接收到目标区域的LDNS发送的域名解析请求时，该DNS可以根据目标列表信息，确定出目标域名对应的目标区域中的Web服务器的IP地址。调度粒度优化到每个Web服务器的IP地址，调度粒度更加细化。本发明实施例还改变了传统方法中需要通过cname的方式将业务切换给CDN服务商，再通过二次递归解析方式最终得到IP地址的方式，极大的节省了解析时间，从而节省了网民的等待时间。

Claims (10)

  1. CDN业务的处理方法，其中，包括：
    域名解析服务器DNS从内容分发网络CDN服务商的管理设备获取第一列表信息，所述第一列表信息包括域名、目标区域、web服务器的IP地址，所述web服务器的IP地址与所述域名和所述目标区域均具有映射关系；
    所述DNS接收本地域名解析服务器LDNS发送的域名解析请求，所述域名解析请求包括目标域名和LDNS的IP地址；
    所述DNS根据所述LDNS的IP地址确定目标区域；
    所述DNS根据所述第一列表信息确定所述目标域名对应的目标区域中的目标Web服务器的IP地址；
    所述DNS向所述LDNS发送所述目标Web服务器的IP地址。
  2. 根据权利要求1所述的CDN业务的处理方法，其中，
    所述DNS从管理设备获取第一列表信息包括：所述DNS周期性的从所述管理设备获取第一列表信息，所述第一列表信息还包括web服务器的负载信息和/或性能状态信息；
    所述DNS根据所述第一列表信息确定所述目标域名对应的目标区域中的目标Web服务器的IP地址包括:所述DNS根据所述第一列表信息确定目标区域内的web服务器的IP地址；所述DNS根据所述web服务器的所述负载信息和/或性能状态信息确定目标web服务器的IP地址，所述目标web服务器为所述负载信息优于阈值和/或性能状态信息优于阈值的web服务器。
  3. 根据权利要求1所述的CDN业务的处理方法，其中，所述DNS接收本地域名解析服务器LDNS发送的域名解析请求之后，所述方法还包括：所述DNS向所述管理设备获取目标区域的第二列表信息，所述第二列表信息包括目标区域内的web服务器的负载信息和/或性能状态信息；
    所述DNS根据所述第一列表信息确定所述目标域名对应的目标区域中的目标Web服务器的IP地址包括：所述DNS根据所述第一列表信息确定目标区域内的web服务器的IP地址；所述DNS根据所述第二列表信息中所述web服务器的所述负载信息和/或性能状态信息确定目标web服务器的IP地址，所述目 标web服务器为所述负载信息优于阈值和/或性能状态信息优于阈值的web服务器。
  4. 根据权利要求1至3任一项所述的CDN业务的处理方法，其中，所述域名解析服务器DNS从内容分发网络CDN服务商的管理设备获取第一列表信息包括：
    所述DNS从多个管理设备获取目标列表信息，所述多个管理设备属于不同的CDN服务商，所述目标列表信息包括域名、目标区域、web服务器的IP地址，所述web服务器的IP地址与所述域名和所述目标区域均具有映射关系；
    所述DNS将所述多个所述目标列表信息进行合并，得到所述第一列表信息。
  5. CDN业务的处理方法，其中，包括：
    内容分发网络CDN服务商的管理设备向域名解析服务器DNS提供第一列表信息，所述第一列表信息包括域名、目标区域、web服务器的IP地址，所述web服务器的IP地址与所述域名和所述目标区域均具有映射关系；所述第一列表信息用于：当所述DNS接收到目标区域的LDNS发送的域名解析请求时，所述域名解析请求包括目标域名和LDNS的IP地址，所述DNS根据所述LDNS的IP地址确定目标区域，并根据所述第一列表信息，确定所述目标域名对应的目标区域中的目标Web服务器的IP地址，以使所述DNS向LDNS发送所述目标Web服务器的IP地址。
  6. 根据权利要求5所述的CDN业务的处理方法，其中，所述CDN服务商的管理设备向域名解析服务器DNS提供第一列表信息，包括：所述管理设备周期性的分区域获取所述区域内的每个web服务器的负载信息和/或性能状态信息；所述管理设备根据所述负载信息和多个web服务器的IP地址得到第一列表信息；所述管理设备周期性的向所述DNS提供所述第一列表信息。
  7. 根据权利要求5所述的CDN业务的处理方法，其中，所述方法还包括：
    所述管理设备接收所述DNS发送的请求，所述请求包括目标区域信息；所述管理设备根据所述请求获取所述目标区域内的web服务器的负载信息和/或性能状态信息；
    所述管理设备根据所述web服务器的负载信息和/或性能状态信息、web服务器的IP列表信息生成第二列表信息；
    所述管理设备向所述DNS发送所述第二列表信息。
  8. 域名解析服务器，其特征在于，包括：获取模块，被设置为从内容分发网络CDN服务商的管理设备获取第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，所述web服务器的IP地址与所述域名和所述目标区域均具有映射关系；
    接收模块，被设置为接收本地域名解析服务器LDNS发送的域名解析请求，所述域名解析请求包括目标域名和所述LDNS的IP地址；
    确定模块，被设置为根据所述接收模块接收的所述LDNS的IP地址确定目标区域；
    所述确定模块，还被设置为根据所述获取模块获取的所述第一列表信息，确定所述接收模块接收的所述目标域名对应的目标区域中的目标Web服务器的IP地址；
    发送模块，被设置为向所述LDNS发送所述确定模块确定的所述目标Web服务器的IP地址。
  9. 管理设备，其中，包括：
    发送模块，被设置为向域名解析服务器DNS提供第一列表信息，第一列表信息包括域名、目标区域、web服务器的IP地址，所述web服务器的IP地址与所述域名和所述目标区域均具有映射关系；所述第一列表信息用于：当所述DNS接收到目标区域的LDNS发送的域名解析请求时，所述域名解析请求包括目标域名和LDNS的IP地址，所述DNS根据所述LDNS的IP地址确定目标区域，并根据所述第一列表信息，确定所述目标域名对应的目标区域中的目标Web服务器的IP地址，以使所述DNS向LDNS发送所述目标Web服务器的IP地址。
  10. 通信系统，其中，包括：域名解析服务器DNS和内容分发网络CDN服务商的管理设备；
    所述DNS被设置为执行如权利要求1至4任一项中DNS所执行的方法；所述管理设备被设置为执行如权利要求5至7任一项中管理设备所述执行的方法。
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