WO2018041212A1

WO2018041212A1 - Method for processing cdn service, relevant device and communication system

Info

Publication number: WO2018041212A1
Application number: PCT/CN2017/099880
Authority: WO
Inventors: 符立佳; 苗辉
Original assignee: 贵州白山云科技有限公司
Priority date: 2016-08-31
Filing date: 2017-08-31
Publication date: 2018-03-08
Also published as: CN106375492B; CN111245972B; CN111245972A; CN106375492A

Abstract

Disclosed are a method for processing a CDN service for reducing a domain name parsing time and improving parsing efficiency. The method in the embodiments of the present invention comprises: a first DNS receiving a domain name parsing request of an LDNS of a target area, wherein the domain name parsing request is sent by the LDNS according to the IP address of the first DNS, and the IP address of the first DNS is obtained after an authoritative DNS of a registry queries NS records and is sent to the LDNS, the NS records being used for indicating a first DNS having the right to parse a target domain name, and the first DNS belonging to a first content delivery network (CDN) service provider; the first DNS querying domain name parsing records according to the target domain name so as to obtain the IP address of a first Web server in the target area; and the first DNS sending the IP address of the first Web server to the LDNS. Also provided is an authoritative domain name parsing server, a domain name parsing server and a communication system.

Description

Method for processing CDN service, related equipment and communication system

This application claims the priority of the Chinese patent application filed on August 31, 2016, the Chinese Patent Office, the application number is 201610790427.5, and the invention name is “a processing method, related equipment and communication system for CDN services”. The citations are incorporated herein by reference.

Technical field

The present invention relates to the field of Internet technologies, and in particular, to a method for processing a CDN service, a related device, and a communication system.

Background technique

Content Delivery Network (CDN) 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 required Content, thereby solving the congestion of the Internet network and improving the response speed of users visiting the website.

In the usual method, when the local domain name resolution server (LDNS) receives a domain name resolution request sent by a netizen client in the local area (for example, Beijing), the local domain name server (Local Domain Name Server, Abbreviation: LDNS) sends the domain name resolution request to the authoritative domain name resolution server (DNS). The authoritative DNS accesses the DNS at all levels through recursive resolution. The DNS feeds the domain name alias (cname) back to LDNS. After receiving the cname, the LDNS obtains the IP address corresponding to the cname through the recursive query again. The LDNS feeds the IP address back to the client of the netizen, and the client accesses the IP address to obtain data.

In the above method, the final IP address is fed back to the client, and at least two recursive resolutions are needed. The first time is that the authoritative DNS accesses the DNS at all levels through recursive resolution, and the DNS feeds back the alias (cname) of the domain name to the client. LDNS, the second time is that after LDNS receives cname, it uses recursive query again to get the IP address corresponding to the cname. The domain name resolution efficiency is low, which increases the waiting time of netizens.

Summary of the invention

The embodiment of the invention provides a processing method, a related device and a communication system for a CDN service. It is used to reduce the time of domain name resolution and improve the efficiency of analysis.

In a first aspect, an embodiment of the present invention provides a method for processing a CDN service, where the method includes:

The first domain name resolution server DNS receives the domain name resolution request of the local domain name resolution server LDNS of the target area, the domain name resolution request includes a target domain name, and the domain name resolution request is sent by the LDNS according to the IP address of the first DNS. The IP address of the first DNS is obtained by the registrar's authoritative DNS query NS record, and is sent to the LDNS, where the NS record is used to indicate the first DNS having the resolution right to the target domain name. The first DNS belongs to the first content distribution network CDN service provider.

The first DNS queries the domain name resolution record according to the target domain name, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider;

The first DNS sends an IP address of the first web server to the LDNS.

In a possible implementation manner, the NS record includes a host name of the first DNS, and the host name has a mapping relationship with an IP address of the first DNS.

In a second aspect, an embodiment of the present invention provides a method for processing a CDN service, where the method includes:

The authoritative DNS of the registry receives the domain name resolution request sent by the LDNS of the target area, where the domain name resolution request includes the target domain name;

The authoritative DNS of the registry is configured to query the NS record according to the domain name resolution request, and obtain an IP address of the first DNS, where the NS record is used to indicate a first DNS having resolution rights to the target domain name, where the One DNS belongs to the first CDN service provider;

The authoritative DNS of the registry sends an IP address of the first DNS to the LDNS according to the NS record, and the IP address of the first DNS is used by the LDNS to send a domain name resolution request to the first DNS, so that The first DNS queries the domain name resolution record according to the domain name resolution request, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider, and the first DNS server The LDNS sends the IP address of the first web server.

In a possible implementation manner, the method further includes:

When the first DNS fails, the authoritative DNS of the registry changes the NS record, and the changed NS record is used to indicate a second DNS having resolution rights to the target domain name, and the second DNS belongs to the second CDN service provider;

The authoritative DNS of the registry sends the IP address of the second DNS to the LDNS according to the NS record.

In a possible implementation, the registry's authoritative DNS changes the NS record, including:

The authoritative DNS of the registry receives an externally input instruction;

The authoritative DNS of the registry changes the NS record according to the instructions.

In a possible implementation manner, the NS record includes multiple DNSs, and the multiple DNSs belong to different CDN service providers, and each of the multiple DNS addresses has different priorities; The authoritative DNS changes NS records, including:

The authoritative DNS switches the authority of the domain name resolution from the first DNS to the second DNS through the NS record according to the priority from the highest to the lowest, wherein the second DNS is the The highest priority DNS outside the first DNS.

In a possible implementation manner, the authoritative DNS of the registry obtains the NS record according to the domain name resolution request, and obtains the IP address of the first DNS, including:

The authoritative DNS of the registry queries the NS record according to the domain name resolution request;

The authoritative DNS of the registry obtains the host name of the first DNS according to the NS record, and the host name has a mapping relationship with the IP address of the first DNS;

The authoritative DNS of the registry obtains the IP address of the first DNS according to the host name and the mapping relationship.

In a third aspect, an embodiment of the present invention provides a domain name resolution server, including:

a receiving module, configured to receive a domain name resolution request of a local domain name resolution server LDNS of the target area, where the domain name resolution request includes a target domain name, and the domain name resolution request is sent by the LDNS according to an IP address of the domain name resolution server. The IP address is obtained by the registrar's authoritative DNS query NS record, and is sent to the LDNS, the NS record is used to indicate the first DNS having the resolution right to the target domain name, and the first DNS belongs to First content distribution network CDN service provider;

a querying module, configured to query a domain name resolution record according to the target domain name received by the receiving module, to obtain an IP address of a first web server in the target area, where the first web server belongs to a first CDN service provider;

a sending module, configured to send, to the LDNS, the first web service that is queried by the query module The IP address of the device.

In a fourth aspect, an embodiment of the present invention provides an authoritative domain name resolution server, including:

a receiving module, configured to receive a domain name resolution request sent by an LDNS of the target area, where the domain name resolution request includes a target domain name;

a querying module, configured to query an NS record according to the domain name resolution request received by the receiving module, to obtain an IP address of the first DNS, where the NS record is used to indicate a first DNS having resolution rights to the target domain name The first DNS belongs to the first CDN service provider;

a sending module, configured to send, according to the NS record, an IP address of the first DNS that is queried by the query module to the LDNS, where an IP address of the first DNS is used by the LDNS to send to the first DNS a domain name resolution request, so that the first DNS queries the domain name resolution record according to the domain name resolution request, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider. The first DNS sends the IP address of the first web server to the LDNS.

In a possible implementation manner, the method further includes: a recording module;

a recording module, configured to change an NS record when the first DNS fails, the changed NS record is used to indicate a second DNS having a resolution right to the target domain name, and the second DNS belongs to a second CDN service Business

The sending module is further configured to send the IP address of the second DNS to the LDNS according to the NS record.

In a possible implementation manner, the method further includes: an input module and a recording module;

The input module is configured to receive an external input instruction when the first DNS fails;

The recording module is further configured to change the NS record according to the instruction.

In a possible implementation manner, the NS record includes multiple DNSs, and the multiple DNSs belong to different CDN service providers, and each of the multiple DNS addresses has different priorities;

The recording module is further configured to switch, by using an NS record, the right to resolve the domain name from the first DNS to the second DNS according to the priority from the highest priority to the second DNS, where the second DNS is the multiple DNS The highest priority DNS in addition to the first DNS.

In a fifth aspect, an embodiment of the present invention provides a communications system, including:

The first domain name resolution server DNS, the authoritative DNS of the registry, the local domain name resolution server LDNS, and the first DNS belongs to the first CDN service provider;

The authoritative DNS receives the domain name resolution request sent by the LDNS of the target area, where the domain name resolution request includes the target domain name;

And the NS record is used to indicate the first DNS of the first DNS,

The authoritative DNS of the registry sends an IP address of the first DNS to the LDNS according to the NS record;

The LDNS sends a domain name resolution request to the first DNS according to the IP address of the first DNS, where the domain name resolution request includes a target domain name;

The first DNS queries the domain name resolution record according to the domain name resolution request, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider;

The first DNS sends an IP address of the first web server to the LDNS.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

The authoritative domain name resolution server DNS introduces the domain name resolution authority to the DNS of the first CDN service provider to import the CDN service. The DNS of the first CDN service provider resolves the target domain name according to the domain name resolution request, and obtains the IP address of the web server in the target area, which effectively reduces the recursive resolution time of the traditional method at least twice. At the same time of CDN business, it effectively improves the efficiency of domain name resolution and reduces the waiting time of netizens.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a communication system in an embodiment of the present invention;

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;

4 is a schematic diagram of switching a DNS when a first DNS fails in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a domain name resolution server according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an embodiment of an authoritative domain name resolution server according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another embodiment of an authoritative domain name resolution server according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another embodiment of an authoritative domain name resolution server according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without being used for Describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The embodiment of the invention provides a processing method of a CDN service, and the method is applied to a communication system. Please refer to FIG. 1, which is a schematic structural diagram of the communication system. For the sake of easy understanding, the following briefly introduces the communication system:

The communication system includes: a first domain name resolution server DNS 110, an authoritative DNS 120 of the registry, and a local domain name resolution server LDNS 130. The first DNS 110 belongs to the first CDN service provider and the client 140 of the target area. Client 140 of the target area (eg, Beijing) sends to LDNS 130 The domain name resolution request, the domain name resolution request includes a target domain name, for example, the target domain name may be www.a.com. The LDNS 130 queries the local cache list. If the local cache list does not have the cache information of the www.a.com, the LDNS 130 sends a domain name resolution request to the authoritative DNS 120, where the domain name resolution request includes the target domain name. The authoritative DNS queries the NS record according to the domain name resolution request, and obtains an IP address of the first DNS 110, where the NS record is used to indicate the first DNS 110 having the resolution right to the target domain name. The authoritative DNS 120 of the registry sends the IP address of the first DNS 110 to the LDNS 130 based on the NS record. The LDNS 130 sends a domain name resolution request to the first DNS 110 according to the IP address of the first DNS 110, where the domain name resolution request includes the target domain name. The first DNS 110 queries the domain name resolution record according to the domain name resolution request, and obtains the IP address of the first web server 150 in the target area (Beijing area). The first DNS 110 transmits the IP address of the first web server 150 to the LDNS 130. The LDNS 130 feeds back the IP address of the first web server to the client 140 of the target area (eg, Beijing). The client 140 initiates a web request to the first web server 150 and retrieves the data.

Referring to FIG. 2, an embodiment of a method for processing a CDN service according to an embodiment of the present invention includes:

Step 201: The LDNS sends a domain name resolution request to the authoritative DNS, where the domain name resolution request includes the target domain name.

A domain name resolution request sent by a client of the target area (for example, Beijing) to the LDNS, where 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 authoritative DNS, and the domain name resolution request includes the target domain name.

Step 202: The authoritative DNS queries the NS record according to the domain name resolution request, and obtains an IP address of the first DNS.

The NS (Name Server) record refers to the domain name server record, which is used to specify which DNS server to resolve the domain name. The NS record includes a host name of the first DNS, and the host name has a mapping relationship with an IP address of the first DNS.

For example, the NS record is "a.com.cn.dns1.cdnA.com".

The host name is "dns1.cdn.com".

The IP of the first DNS is "1.1.1.1".

When the domain name is registered in the registry, the authoritative DNS has authorized the first DNS to resolve the domain name through the NS record, and the first DNS is the DNS of the first CDN service provider. Therefore, the authoritative DNS receives the domain name resolution request, and queries the NS record according to the target domain name to obtain the IP address of the first DNS. The specific method for obtaining the first DNS by the authoritative DNS may be: the authoritative DNS queries the NS record according to the domain name resolution request, and obtains the host name of the first DNS according to the NS record, the host name and the The IP address of the first DNS has a mapping relationship, and the authoritative DNS obtains the IP address of the first DNS according to the host name and the mapping relationship.

Step 203: The authoritative DNS sends an IP address of the first DNS to the LDNS according to the NS record.

The authoritative DNS obtains the IP address of the first DNS having the resolution authority for the target domain name by querying the NS record, and the authoritative DNS feeds back the IP address of the first DNS to the LDNS.

Step 204: The LDNS sends a domain name resolution request to the first DNS according to the IP address of the first DNS, where the domain name resolution request includes a target domain name.

The first DNS queries the domain name resolution record according to the domain name resolution request, and obtains the IP address of the first web server corresponding to the target domain name in the target area (Beijing area). The target domain name has a mapping relationship with the IP address of the web server.

Step 205: The first DNS sends an IP address of the first web server to the LDNS. So that the client can directly access the web server through the IP address of the web server to obtain data.

For example, the first DNS resolution record includes, see the following table 1:

Table 1

目标域名Target domain	目标区域target area	web服务器的IP地址Web server IP address
www.a.comWww.a.com	beijingBeijinging	101.101.101.101101.101.101.101
www.a.comWww.a.com	shanghaiShanghai	202.202.202.202202.202.202.202
www.a.comWww.a.com	guangdongGuangdong	303.303.303.303303.303.303.303

In the embodiment of the present invention, when registering in the registry, the authoritative DNS authorizes the resolution right of the target domain name to the first DNS of the CDN service provider through the NS record, thereby realizing the direct introduction of the CDN service without setting the cname. The DNS of the first CDN service provider determines the target according to the domain name resolution request The domain name is parsed to obtain the IP address of the web server in the target area, which effectively reduces the recursive resolution time of the traditional method, and at least simultaneously increases the efficiency of domain name resolution and reduces the waiting time of the netizen while introducing the CDN service. .

In the embodiment of the present invention, since there is no cross-domain cname, 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. For example, if the target domain name is www.a.com, in the traditional method, cname is "www.a.nn.com", and in www.a.nn.com, "nn" is the name of the CDN service provider. It is easy to know in cname, which customers are served by CDN service providers, and it is easy to disclose business information. In the embodiment of the present invention, the CDN service is not introduced by means of cname, but the CDN service is directly authorized to the CDN service provider through the NS record through the NS record, so that the information of the CDN service provider can be effectively protected. .

Optionally, if the first DNS is faulty, the processing method of the CDN service provided by the embodiment of the present invention may also perform real-time switching. On the basis of the embodiment corresponding to FIG. 2, when the first DNS fails, the method further includes:

When the first DNS fails, the authoritative DNS of the registry changes the NS record, and the changed NS record is used to indicate a second DNS having resolution rights to the target domain name, and the second DNS belongs to the second CDN service provider.

It can be understood that when the authoritative DNS determines that the first DNS fails, the authoritative DNS changes the NS record in real time, and the second DNS performs the domain name resolution function, and the second DNS resolution record includes the mapping between the target domain name and the IP address of the web server. relationship. The steps performed by the first DNS in the embodiment corresponding to FIG. 2 are performed by the second DNS instead of the first DNS.

Specifically, as shown in FIG. 3, another embodiment of a method for processing a CDN service is provided in the embodiment of the present invention, including:

Step 301: When the first DNS fails, the authoritative DNS of the registry changes an NS record, and the changed NS record is used to indicate a second DNS that has a resolution right to the target domain name, and the second DNS Belongs to the second CDN service provider.

Please refer to FIG. 4 for understanding. FIG. 4 shows that in a possible implementation manner, the primary domain name resolution server and the standby domain name resolution server are pre-configured in the NS record. Among them, the first DNS is the main domain name resolution service The server and the second DNS are standby domain name resolution servers. When the first DNS fails, the authoritative DNS of the registry switches the primary domain name resolution server to the standby domain name resolution server, that is, switches from the first DNS to the second DNS to achieve real-time switching.

In a possible implementation manner, when the first DNS fails, the authoritative DNS of the registry receives an externally input instruction; the authoritative DNS changes the NS record according to the instruction, and the changed NS record is used to indicate A second DNS having resolution rights to the target domain name, the second DNS belongs to a second CDN service provider.

In another possible implementation manner, when the first DNS fails, the authoritative DNS switches the authority of domain name resolution from the first DNS by using an NS record according to the priority from high to low. To the target DNS, the target DNS is a DNS with the highest priority among the plurality of DNS except the first DNS. For example, the NS records 4 DNSs, and the 4 DNSs may belong to different service providers, and the 4 DNSs are specifically the first DNS, the second DNS, the third DNS, and the fourth DNS. The priority of the four DNSs is shown in Table 2 below:

Table 2

DNSDNS	优先级priority	服务商Service provider
第一DNSFirst DNS	11	第一服务商First service provider
第二DNSSecond DNS	22	第二服务商Second service provider
第三DNSThird DNS	33	第三服务商Third service provider
第四DNSFourth DNS	44	第四服务商Fourth service provider

If the first DNS fails, the authoritative DNS grants the right of domain name resolution to the second DNS through the NS according to the priority from high to low.

It can be understood in conjunction with FIG. 4, which is a schematic diagram of DNS switching when the first DNS fails. If the first DNS (corresponding to dns1 in FIG. 4) of the first CDN service provider (corresponding to dns1 in FIG. 4) fails, the authoritative DNS of the registry authorizes the second DNS through the NS record (corresponding to dns2 in FIG. 4) The second DNS belongs to the second CDN service provider (corresponding to cdnB in FIG. 4).

The changed NS record is: For example, the NS record is "a.com.cn.dns2.cdnB.com".

The host name is "dns2.cdn.com".

The IP of the second DNS is "3.3.3.3".

Step 302: The LDNS sends a domain name resolution request to the authoritative DNS, where the domain name resolution request includes the target domain name.

This step is understood in conjunction with step 201 in the embodiment corresponding to FIG. 2, and details are not described herein.

Step 303: The authoritative DNS queries the NS record according to the domain name resolution request, and obtains an IP address of the second DNS.

This step is understood in conjunction with step 202 in the embodiment corresponding to FIG. 2, and details are not described herein.

Please understand in conjunction with Figure 4, the IP address of the second DNS is "3.3.3.3".

Step 304: The authoritative DNS sends an IP address of the second DNS to the LDNS according to the NS record.

This step is understood in conjunction with step 203 in the embodiment corresponding to FIG. 2, and details are not described herein.

Step 305: The LDNS sends a domain name resolution request to the second DNS according to the IP address of the second DNS, where the domain name resolution request includes the target domain name.

This step is understood in conjunction with step 204 in the embodiment corresponding to FIG. 2, and details are not described herein.

Step 306: The second DNS sends the IP address of the second web server to the LDNS. So that the client can directly access the second web server through the IP address of the web server to acquire data. The second web server belongs to the second service provider.

This step is understood in conjunction with step 205 in the embodiment corresponding to FIG. 2, and details are not described herein.

As shown in Figure 4. For example, the IP address of the second web server in the Beijing area is: "111.111.111.111".

In the embodiment of the present invention, when the first DNS fails, the first DNS is the currently working DNS, and the authoritative DNS can switch the DNS in real time through the NS record, which saves the traditional method. If the DNS fails, it needs to wait for survival. Time To Live (TTL: TTL), NS records can be updated in real time, greatly improving the efficiency of failover.

Referring to FIG. 5, an embodiment of the present invention further provides an embodiment of a domain name resolution server 500, including:

a receiving module, configured to receive a domain name resolution request of a local domain name resolution server LDNS of the target area, where the domain name resolution request includes a target domain name, and the domain name resolution request is sent by the LDNS according to an IP address of the domain name resolution server. The IP address is obtained by the registrar's authoritative DNS query NS record and sent to the LDNS, and the NS record is used to indicate the target domain. The first DNS having the resolution authority, the first DNS belongs to the first content distribution network CDN service provider.

The querying module is configured to query the domain name resolution record according to the target domain name received by the receiving module to obtain an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider.

And a sending module, configured to send, to the LDNS, an IP address of the first web server that is queried by the query module.

Referring to FIG. 6, an embodiment of the present invention further provides an authoritative domain name resolution server 600.

The receiving module is configured to receive a domain name resolution request sent by the LDNS of the target area, where the domain name resolution request includes the target domain name.

The query module is also specifically used to:

Obtaining an NS record according to the domain name resolution request; obtaining, according to the NS record, a host name of the first DNS, where the host name has a mapping relationship with an IP address of the first DNS; according to the host name and the The mapping relationship obtains the IP address of the first DNS.

On the basis of the corresponding embodiment of FIG. 6, referring to FIG. 7, an embodiment of the present invention further provides an authoritative domain name resolution server 700.

On the basis of the corresponding embodiment of FIG. 6, please refer to FIG. 8, an embodiment of the present invention further provides an authoritative domain name resolution server 800.

The recording module is further configured to: change the NS record according to the instruction, where the changed NS record is used to indicate a second DNS that has the resolution right to the target domain name, and the second DNS belongs to the second CDN service provider;

Optionally, the NS record includes multiple DNSs, and the multiple DNSs belong to different CDN service providers, and each of the multiple DNS addresses has different priorities.

The recording module is further configured to: when the first DNS fails, switch the domain name resolution permission from the first DNS to the target DNS by using an NS record according to the priority from highest to lowest, the The target DNS is the highest priority DNS among the plurality of DNS except the first DNS.

The sending module is further configured to send the IP address of the target DNS to the LDNS according to the NS record.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place, or It can also be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the 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 standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents of the technical solutions of the embodiments of the present invention.

Industrial applicability

In the present invention, the authoritative domain name resolution server DNS introduces the domain name resolution authorization to the DNS of the first CDN service provider through the name NS of the server to introduce the CDN service. The DNS of the first CDN service provider resolves the target domain name according to the domain name resolution request, and obtains the IP address of the web server in the target area, which effectively reduces the recursive resolution time of the traditional method at least twice, and is effective at the same time of introducing the CDN service. Improve the efficiency of domain name resolution and reduce the waiting time of netizens.

Claims

A method for processing a CDN service, characterized in that the method comprises:

The first domain name resolution server DNS receives the domain name resolution request of the local domain name resolution server LDNS of the target area, the domain name resolution request includes a target domain name, and the domain name resolution request is sent by the LDNS according to the IP address of the first DNS. The IP address of the first DNS is obtained by the registrar's authoritative DNS query NS record, and is sent to the LDNS, where the NS record is used to indicate the first DNS having the resolution right to the target domain name. The first DNS belongs to the first content distribution network CDN service provider;

The first DNS queries the domain name resolution record according to the target domain name, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider;

The first DNS sends an IP address of the first web server to the LDNS.
The method for processing a CDN service according to claim 1, wherein the NS record comprises a host name of the first DNS, and the host name has a mapping relationship with an IP address of the first DNS.
A method for processing a CDN service, characterized in that the method comprises:

The authoritative DNS of the registry receives the domain name resolution request sent by the LDNS of the target area, where the domain name resolution request includes the target domain name;

The authoritative DNS of the registry is configured to query the NS record according to the domain name resolution request, and obtain an IP address of the first DNS, where the NS record is used to indicate a first DNS having resolution rights to the target domain name, where the One DNS belongs to the first CDN service provider;

The authoritative DNS of the registry sends an IP address of the first DNS to the LDNS according to the NS record, and the IP address of the first DNS is used by the LDNS to send a domain name resolution request to the first DNS, so that The first DNS queries the domain name resolution record according to the domain name resolution request, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider, and the first DNS server The LDNS sends the IP address of the first web server.
The method for processing a CDN service according to claim 3, wherein the method further comprises:

When the first DNS fails, the authoritative DNS of the registry changes the NS record, and the changed NS record is used to indicate a second DNS having resolution rights to the target domain name, the second DNS Belongs to the second CDN service provider;

The authoritative DNS of the registry sends the IP address of the second DNS to the LDNS according to the NS record.
The method for processing a CDN service according to claim 4, wherein the authoritative DNS of the registry changes the NS record, including:

The authoritative DNS of the registry receives an externally input instruction;

The authoritative DNS of the registry changes the NS record according to the instructions.
The method for processing a CDN service according to claim 4, wherein the NS record comprises a plurality of DNS, the plurality of DNS belong to different CDN service providers, and each of the plurality of DNS has different DNS Priority; the registry's authoritative DNS changes NS records, including:

The authoritative DNS switches the authority of the domain name resolution from the first DNS to the second DNS through the NS record according to the priority from the highest to the lowest, wherein the second DNS is the The highest priority DNS outside the first DNS.
A domain name resolution server, comprising:

a receiving module, configured to receive a domain name resolution request of a local domain name resolution server LDNS of the target area, where the domain name resolution request includes a target domain name, and the domain name resolution request is sent by the LDNS according to an IP address of the domain name resolution server. The IP address is obtained by the registrar's authoritative DNS query NS record, and is sent to the LDNS, the NS record is used to indicate the first DNS having the resolution right to the target domain name, and the first DNS belongs to First content distribution network CDN service provider;

a querying module, configured to query a domain name resolution record according to the target domain name received by the receiving module, to obtain an IP address of a first web server in the target area, where the first web server belongs to a first CDN service provider;

And a sending module, configured to send, to the LDNS, an IP address of the first web server that is queried by the query module.
An authoritative domain name resolution server, comprising:

a receiving module, configured to receive a domain name resolution request sent by an LDNS of the target area, where the domain name resolution request includes a target domain name;

a querying module, configured to query an NS record according to the domain name resolution request received by the receiving module, to obtain an IP address of the first DNS, where the NS record is used to indicate that the target domain name is parsed a first DNS of the rights, the first DNS belongs to the first CDN service provider;

a sending module, configured to send, according to the NS record, an IP address of the first DNS that is queried by the query module to the LDNS, where an IP address of the first DNS is used by the LDNS to send to the first DNS a domain name resolution request, so that the first DNS queries the domain name resolution record according to the domain name resolution request, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider. The first DNS sends the IP address of the first web server to the LDNS.
The authoritative domain name resolution server according to claim 8, further comprising: a recording module;

a recording module, configured to change an NS record when the first DNS fails, the changed NS record is used to indicate a second DNS having a resolution right to the target domain name, and the second DNS belongs to a second CDN service Business

The sending module is further configured to send the IP address of the second DNS to the LDNS according to the NS record.
A communication system, characterized in that: a first domain name resolution server DNS, an authoritative DNS of a registry, a local domain name resolution server LDNS, and the first DNS belongs to a first CDN service provider;

The authoritative DNS receives the domain name resolution request sent by the LDNS of the target area, where the domain name resolution request includes the target domain name;

And the NS record is used to indicate the first DNS of the first DNS,

The authoritative DNS of the registry sends an IP address of the first DNS to the LDNS according to the NS record;

The LDNS sends a domain name resolution request to the first DNS according to the IP address of the first DNS, where the domain name resolution request includes a target domain name;

The first DNS queries the domain name resolution record according to the domain name resolution request, and obtains an IP address of the first web server in the target area, where the first web server belongs to the first CDN service provider;

The first DNS sends an IP address of the first web server to the LDNS.