WO2013075502A1 - Procédé et dispositif de traitement de métadonnées et système d'intercommunication par cdn - Google Patents

Procédé et dispositif de traitement de métadonnées et système d'intercommunication par cdn Download PDF

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Publication number
WO2013075502A1
WO2013075502A1 PCT/CN2012/078143 CN2012078143W WO2013075502A1 WO 2013075502 A1 WO2013075502 A1 WO 2013075502A1 CN 2012078143 W CN2012078143 W CN 2012078143W WO 2013075502 A1 WO2013075502 A1 WO 2013075502A1
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WIPO (PCT)
Prior art keywords
metadata
distribution network
content distribution
content
parameter
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PCT/CN2012/078143
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English (en)
Chinese (zh)
Inventor
和晓艳
李金成
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华为技术有限公司
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Publication of WO2013075502A1 publication Critical patent/WO2013075502A1/fr

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    • 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
    • H04L67/2866—Architectures; Arrangements
    • H04L67/289—Intermediate processing functionally located close to the data consumer application, e.g. in same machine, in same home or in same sub-network
    • 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
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/564—Enhancement of application control based on intercepted application data

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a metadata processing method and apparatus, and a CDN interworking system.
  • the Content Delivery Network distributes the content of the website to the network closest to the user by superimposing a new network architecture on the existing network (IP, Internet Protocol) transmission network.
  • IP Internet Protocol
  • "Edge” allows users to get the content they need to solve the current network congestion and improve the response speed of users accessing the network.
  • the problem of slow response of users accessing the network due to small network bandwidth, large user access, and uneven distribution of network points is solved.
  • the Content Provider uses the services provided by the CDN to speed up the distribution of content, enabling users of CP to enjoy high quality of service.
  • the content provider uses CDN to complete content acceleration, it can decide to completely place the content on the CDN's central storage server according to the needs of its own business or to still reside on its own content source server.
  • the CDN is used.
  • the content storage and cache acceleration capabilities provided, and the latter uses the content cache acceleration capability provided by the CDN.
  • the content provider defines the corresponding metadata in order to explain the content that needs the CDN cache acceleration and control the final delivery of the content, for example, the CP restricted content is only allowed to be viewed in certain specific areas, or the CP is restricted. The content is only allowed to be viewed in a certain period of time.
  • the CP needs to deliver the part of the metadata defined by the CP to the CDN, so that the CDN can deliver the content according to the metadata in the subsequent business process. Control, etc.
  • This technology only considers the scene of a CDN directly contracted with the CP, but the coverage area of any single CDN is limited, and the users are scattered in different areas, so the separate CDNs need to communicate with each other to each other.
  • the CDN that ultimately delivers the delivery content to the user may not be the CDN directly contracted with the CP, whereas the prior art for the CDN mutual
  • the scenario is not covered, and it is not involved in which metadata needs to be transmitted and how metadata is used in this scenario.
  • the embodiment of the present invention provides a method and a device for processing metadata, and a CDN interworking system, which is used to implement processing of metadata in a scenario of interworking of CDNs.
  • a method for processing metadata according to an embodiment of the present invention includes:
  • the first content distribution network CDN obtains first metadata transmitted by the content provider CP; the first content distribution network generates second metadata based on the first metadata and a policy of the first content distribution network,
  • the second metadata includes a distribution parameter of the first metadata and the second metadata, the distribution parameter of the second metadata includes a distribution mode parameter, and the distribution mode parameter is used to indicate the distribution of the second metadata the way;
  • the first content distribution network distributes the second metadata to a second content distribution network according to a distribution manner indicated by the distribution mode parameter.
  • another method for processing metadata includes: receiving, by the second content distribution network, a second element sent by the first content distribution network according to a distribution manner indicated by a distribution mode parameter of the second metadata Data, the second metadata includes a first metadata and a distribution parameter of the second metadata, the distribution parameter of the second metadata includes a distribution mode parameter, and the distribution mode parameter is used to indicate the second a method of distributing metadata, the first metadata being sent by the content provider CP to the first content distribution network;
  • the second content distribution network controls content sent to the user device based on the second metadata.
  • a content distribution network CDN is provided in the embodiment of the present invention, where the CDN is a content distribution network that is contracted with a content provider CP, and the CDN includes:
  • An obtaining unit configured to obtain first metadata sent by the CP
  • a generating unit configured to generate second metadata based on the first metadata and a policy of the first content distribution network, where the second metadata includes distribution parameters of the first metadata and the second metadata,
  • the distribution parameter of the second metadata includes a distribution mode parameter, where the distribution mode parameter is used to indicate a distribution manner of the second metadata;
  • a distribution unit configured to distribute the second metadata to the second content distribution network according to a distribution manner indicated by the distribution mode parameter.
  • another content distribution network CDN provided by the embodiment of the present invention includes:
  • An acquiring unit configured to receive second metadata sent by the first content distribution network according to a distribution manner indicated by a distribution mode parameter of the second metadata, where the second metadata includes the first metadata and the second metadata a distribution parameter, the distribution parameter of the second metadata includes a distribution mode parameter, the distribution mode parameter is used to indicate a distribution manner of the second metadata, and the first metadata is sent by the content provider CP to the First content distribution network;
  • a content control unit configured to control content sent to the user equipment according to the second metadata.
  • a CDN interworking system includes: a content provider CP, a content distribution network that is contracted with the CP, a content distribution network that is not contracted with the CP, and a user equipment, where The user equipment is configured to send service request information to a content distribution network that is contracted with the CP.
  • the embodiments of the present invention have the following advantages:
  • the first content distribution network generates the second metadata based on the first metadata and the policy of the first content distribution network, where the second metadata includes the first metadata and the distribution parameters of the second metadata.
  • the distribution parameter of the second metadata includes a distribution mode parameter, and the first content distribution network distributes the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter, so that the second content distribution network according to the received
  • the second metadata controls the content sent to the user device.
  • FIG. 1 is a schematic diagram of another embodiment of a method for processing metadata according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another embodiment of a method for processing metadata according to an embodiment of the present invention
  • Figure 4 is a schematic diagram of another embodiment of a content distribution network according to an embodiment of the present invention
  • Figure 5 is a schematic diagram of an embodiment of a CDN interworking system according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another embodiment of a CDN interworking system according to an embodiment of the present invention.
  • the embodiment of the present invention provides a method and a device for processing metadata, and a CDN interworking system, which is used to implement processing of metadata in a scenario of interworking of CDNs.
  • the embodiment of the present invention provides a method for processing metadata, as shown in FIG. 1 , which may include:
  • the first content distribution network obtains first metadata sent by the content provider CP.
  • the CDN that is directly contracted with the CP is referred to as an Up Content Delivery Network (UpCD), which is the first content distribution network described in the embodiment of the present invention, and the first content distribution.
  • the network interworking CDN is called the Down Content Delivery Network (Down Content Delivery Network), which is the second content distribution network described in the embodiment of the present invention.
  • the second content distribution network and the first content distribution network can sign each other.
  • the second content distribution network Using the network resources of the other party, in the CDN interworking system, the second content distribution network finally processes the user request and delivers the content for the user.
  • the second level content distribution network of the first level is contracted with the first content distribution network, and the subsequent second content distribution network is respectively contracted with the second content distribution network of the previous level, and directly by the second content distribution network of the last level. User delivers content.
  • the CP signs the contract with the first content distribution network, and the CP can use the first content.
  • the central storage capacity and the cache acceleration capability of the distribution network help to implement the content delivery service for the user equipment.
  • the CP defines the content or controls the content delivery of the subsequent CDN, and the CP defines the corresponding metadata, in the embodiment of the present invention.
  • the metadata defined by the CP is referred to as the first metadata, and the CP uploads the first metadata to the directory negotiated in advance with the first content distribution network, and the first content distribution network can receive the first metadata sent by the CP. And feedback to the CP is successful.
  • the first metadata may specifically include: data that the CP describes the content or data that controls the delivery of the content.
  • the data that controls the delivery of content is used within a certain time; for example, the CP does not allow users other than the Beijing area to use the content, and the CP does not allow the user to use the content after 22:00 every day.
  • the first content distribution network generates second metadata based on the first metadata and a policy of the first content distribution network, where the second metadata includes first metadata and distribution parameters of the second metadata, where the distribution parameters include distribution Mode parameter.
  • the first content distribution network may generate second metadata based on the first metadata and the policy of the first content distribution network, where the generated
  • the binary data includes first metadata and distribution parameters of the second metadata
  • the distribution parameter refers to parameters of how the second metadata is distributed to the second content distribution network
  • the distribution parameters include distribution mode parameters
  • the distribution mode parameters are used for Indicates how the second metadata is distributed.
  • the first content distribution network may determine the distribution mode parameter according to a pre-defined policy of the CDN service provider or the administrator.
  • the distribution mode parameter may specifically include three types: a static pre-distribution method, a dynamic acquisition mode, and a hybrid distribution mode, where
  • the pre-distribution mode refers to that the second content distribution network distributes the metadata to the second content distribution network by the first content distribution network before receiving the user equipment to initiate the service request information, and the second content distribution network is configured according to the second metadata pair.
  • the content sent to the user equipment is controlled;
  • the dynamic acquisition mode refers to that after the second content distribution network receives the user equipment initiation service request information, the second content distribution network requests the metadata from the first content distribution network, and then a content distribution network transmits metadata to the second content distribution network, and the second content distribution network controls content sent to the user equipment according to the second metadata;
  • the hybrid distribution method refers to the second metadata Part of the metadata is sent to the second content by static pre-distribution Network, the remaining part of the metadata for the second metadata transmitted to the second embodiment acquires dynamic content delivery network, i.e., a mixed mode distribution
  • the second metadata is divided into two parts, and a part of the metadata is sent to the second content distribution network in a static pre-distribution manner, and the remaining part of the metadata is sent to the second content distribution network in a dynamic acquisition manner.
  • a specific scenario determines which parts of the second metadata are sent by the static pre-distribution method, and which parts are sent by the dynamic acquisition mode, which is not limited herein, wherein the static pre-distribution mode is used.
  • the part of the sent metadata includes at least the storage address of the second metadata in the first content distribution network, and the last level second content distribution network may directly request the first content distribution network to obtain the remaining part of the metadata according to the storage address. .
  • the policy of the first content distribution network may be pre-defined by the CDN service provider or the administrator. In actual applications, there may be multiple policies, which are exemplified and not limited.
  • the cache acceleration capability of the content distribution network, the content injection method is static pre-injection, the content injection method is dynamic acquisition mode, or the first content distribution network and the second content distribution network communicate, the first content distribution network and the second
  • the reason for the content distribution network intercommunication may specifically include traffic offloading, extended coverage area, and the like.
  • the second content distribution network generates the second metadata based on the first metadata and the policy of the first content distribution network in the step 102.
  • the achievable manner may include:
  • the first content distribution network determines the distribution mode as a static pre-distribution mode according to the policy; A2.
  • the first content distribution network generates the second metadata according to the first metadata and the static pre-distribution mode.
  • the distribution mode parameter is indicated as a static pre-distribution mode, and the distribution parameter in the second metadata further includes a distribution depth parameter, where the distribution depth parameter is a depth at which the second metadata is allowed to be distributed in the CDN interworking system.
  • the distribution parameter may further include multiple parameters, such as: timeout time parameter, timing verification validity time interval parameter, user authentication parameter, etc., which will be respectively described in subsequent embodiments. .
  • the first content distribution network may determine different distribution methods according to different policies, and then detailed description will be made:
  • the first content distribution network may determine the distribution mode parameter as a static pre-distribution mode according to the policy;
  • the first content distribution network may determine the distribution mode parameter as a static pre-distribution mode according to the policy; when the first content distribution network and the second content The reason for the distribution network intercommunication is that when the traffic is uninstalled, the first content distribution network can determine the distribution mode parameter as a static pre-distribution mode according to the policy, and of course, the first content distribution may be according to a combination of one or more of the foregoing conditions. According to the policy, the network can determine the distribution mode parameter as a static pre-distribution mode.
  • the distribution parameter of the second metadata may further include a distribution depth parameter, and the distribution depth parameter is the second metadata in the CDN interworking system.
  • the first content distribution network may set the distribution depth parameter to be 4, indicating that the second metadata may be sent in series to the third-level CDN in addition to the first content distribution network.
  • the third-level CDN is specifically a second content distribution network, a second content distribution network 1, and a second content distribution network 2.
  • the distribution path of the second metadata may be: a first content distribution network -> a second content distribution network -> The second content distribution network 1 -> the second content distribution network 2. At this time, even if the second content distribution network 2 and the second content distribution network 3 are intercommunicated, since the distribution depth parameter takes a value of 4, the second metadata cannot be distributed to the second content distribution network 3 according to the distribution depth parameter being zero. .
  • the second content distribution network generates the second metadata based on the first metadata and the policy of the first content distribution network in the step 102.
  • the first content distribution network determines the distribution mode as a dynamic acquisition mode according to the policy.
  • the first content distribution network generates the second metadata according to the first metadata and the dynamic acquisition manner, and the distribution manner indicated by the distribution mode parameter in the distribution parameter of the second metadata is a dynamic acquisition manner.
  • the first content distribution network can determine different distribution methods according to different policies, and then detailed description is made as follows:
  • the first content distribution network may determine the distribution mode as the dynamic acquisition mode according to the policy; and the method for injecting the content in the first metadata delivered by the CP is In the dynamic acquisition mode, the first content distribution network can be based on the policy. Determining the distribution mode as the dynamic acquisition mode; when the reason for the first content distribution network and the second content distribution network to communicate is the extended coverage area, the first content distribution network may determine the distribution mode as the dynamic acquisition mode according to the policy, and of course According to the combination of one or more of the foregoing conditions, it should be noted that, in an actual application, for the step 102, the first content distribution network generates the first based on the first metadata and the policy of the first content distribution network. Binary data, another way to achieve this is, specifically:
  • the first content distribution network determines the distribution manner as a hybrid distribution manner according to the policy.
  • A6. The first content distribution network generates the second metadata according to the first metadata and the hybrid distribution manner.
  • the distribution mode indicated by the distribution mode parameter in the distribution parameter of the second metadata is a hybrid distribution mode.
  • the first content distribution network may determine different distribution methods according to different policies, and then detailed description will be made:
  • the second content distribution network When the policy of the first content distribution network is to cause the second content distribution network to request the second metadata directly from the first content distribution network, the second content distribution network directly delivers the content to the user equipment, and the first content distribution network is
  • This policy can determine the distribution method as a hybrid distribution method.
  • the first content distribution network is contracted with the CP, and the second content distribution network is provided in the system, and the second content distribution network that delivers the content directly to the user equipment directly from the first A content distribution network requests acquisition of the second metadata, and the first content distribution network may determine the distribution manner as a hybrid distribution manner according to the policy.
  • the first metadata received by the first content distribution network from the CP in step 101 and the second metadata generated by the first content distribution network in step 102 are respectively two.
  • Different metadata which is named as the first metadata in step 101 is only to be distinguished from the second metadata appearing in the subsequent step 102, and the "first" and “second” do not have timing or Any relationship in logic, when the first metadata appears, the second metadata does not necessarily appear.
  • the first metadata does not necessarily appear when the second metadata appears, only to indicate that they are two different elements. Data only.
  • the first content distribution network distributes the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter.
  • the second metadata is distributed to the second content distribution network according to the distribution manner indicated by the distribution mode parameter.
  • the distributing, by the first content distribution network, the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter may include: the first content distribution network adopts a static pre-distribution distribution manner to the second content.
  • the distribution network distributes the second metadata. If the distribution mode is the static pre-distribution mode, the first content distribution network may distribute the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter.
  • the first content distribution network sends a notification message to the second content distribution network, where the notification message includes a storage address of the second metadata, so that the second content distribution network sends a metadata request message to the storage address of the second metadata;
  • the first content distribution network receives a metadata request message sent by the second content distribution network.
  • the first content distribution network transmits the second metadata to the second content distribution network according to the metadata request message.
  • the first content distribution network actively sends a notification message to the second content distribution network to enable the second content distribution network to acquire the second metadata before the request of the user equipment comes.
  • the notification message includes a storage address of the second metadata, and the notification message may further include an acquisition manner. It should be noted that, in the embodiment of the present invention, if the first content distribution network and the second content distribution network have been pre-agreed What kind of acquisition method is used to implement the transmission of the second metadata, and the notification message does not need to include the acquisition method, and if the first content distribution network language second content distribution network does not pre-agreed between what acquisition methods are used , the notification message needs to include the acquisition method.
  • the storage address is a Uniform Resource Locator of the second metadata in the first content distribution network, and the example is http: ⁇ sina.www.cdn.com/metadata/sina .xml
  • the acquisition method is obtained by Hypertext Transfer Protocol (HTTP).
  • HTTP Hypertext Transfer Protocol
  • FTP File Transfer Protocol
  • the acquisition method is the FTP file download method.
  • step B2 after the second content distribution network receives the notification message, the second content is divided into The sending network receives the notification message from the first content distribution network to receive the response, and then the second content distribution network sends a metadata request message to the storage address to obtain the second metadata, that is, request the second metadata to the first content distribution network.
  • the first content distribution network transmits the second metadata to the second content distribution network according to the metadata request message, for example, the first content distribution network transmits the second metadata to the second content distribution network according to the HTTP method, or The first content distribution network transmits the second metadata to the second content distribution network according to the FTP file download mode.
  • the method may further include the following steps:
  • the first content distribution network receives the service request message sent by the user equipment, and the first content distribution network forwards the service request message to the second content distribution network, so that the second content distribution network performs content delivery control on the user equipment according to the second metadata.
  • the first content distribution network is a CDN directly contracted with the CP, and after the user equipment clicks on the connection of a certain content on the website, the corresponding service request message is first routed to the first content distribution network directly contracted with the CP,
  • a content distribution network checks, according to information in the service request message, such as an Internet Protocol (IP) address, that the user equipment is currently located in an area not covered by the first content distribution network, and the first content distribution The network further checks the area covered by the interworking CDN, and checks that the network of the second content distribution network covers the area, and the user equipment can be served through the second content distribution network, so that the service request message of the user is finally routed to the second content. Distribution network.
  • IP Internet Protocol
  • the distributing, by the first content distribution network, the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter may include: distributing the first content distribution network to the second content by using a dynamic acquisition manner The network distributes the second metadata. If the distribution mode is the dynamic acquisition mode, the first content distribution network may distribute the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter, which may include the following steps:
  • the first content distribution network receives a service request message sent by the user equipment.
  • the first content distribution network sends a service request message to the second content distribution network, where the service request message carries the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs.
  • the first content distribution network receives a metadata request message sent by the second content distribution network, where the metadata request message is an identifier of the content requested by the second content distribution network according to the user equipment or the user equipment request The content of the CP to which the content belongs is generated;
  • the first content distribution network transmits the second binary data to the second content distribution network according to the metadata request message.
  • step B4 since the first content distribution network is a CDN directly contracted with the CP, after the user equipment clicks on the connection of a certain content on the website, the corresponding service request message is first routed to the first content distribution network directly contracted with the CP. .
  • the first content distribution network checks, according to the information in the service request message, such as an IP (Internet Protocol) address interconnected between the networks, that the user equipment is currently located in an area not covered by the first content distribution network network.
  • the first content distribution network further checks the area covered by the intercommunicated CDN, and checks that the network of the second content distribution network covers the area, and the user equipment can be served through the second content distribution network, so the user's service request message is finally Route to the second content distribution network.
  • IP Internet Protocol
  • the service request message carries the identifier of the content requested by the UE or the identifier of the CP to which the content requested by the UE belongs, and the second content distribution network sends a metadata request message to the first content distribution network, where the metadata request message carries the requirement.
  • the identifier of the requested metadata may be a specific metadata file label, the port sina.www.cdn.com/metadata/sina.xml, or the content label, indicating that the metadata associated with the content is requested.
  • ⁇ mouth www.cpl.com/video/avantar.rm
  • the first content distribution network verifies the identity of the second content distribution network and returns the requested metadata. For example, the first content distribution network transmits the second metadata to the second content distribution network according to the HTTP method, or the first content distribution network transmits the second metadata to the second content distribution network according to the FTP file download mode.
  • the first content distribution network may distribute the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter, which may include the following steps:
  • the method for sending the storage address of the second metadata to the second content distribution network by using the static pre-distribution method may include the following steps: B8.
  • the first content distribution network sends a notification message to the second content distribution network, where the notification message includes a storage address of the partial metadata, so that the second content distribution network sends a metadata request message to the storage address of the partial metadata.
  • the first content distribution network receives the metadata request message sent by the second content distribution network. B10. The first content distribution network transmits the storage address to the second content distribution network according to the metadata request message.
  • the first content distribution network receives a service request message sent by the user equipment.
  • the first content distribution network sends a service request message to the second content distribution network, where the service request message carries the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs.
  • the first content distribution network receives a metadata request message sent by the second content distribution network, where the metadata request message is an identifier of the content requested by the second content distribution network according to the user equipment or the user equipment.
  • the identifier of the CP to which the requested content belongs is generated;
  • the first content distribution network transmits the remaining metadata to the second content distribution network according to the metadata request message.
  • the method may further include the following steps:
  • the first content distribution network receives the metadata request message sent by the second content distribution network, and the first content distribution network sends the second content to the second content.
  • the distribution network sends the updated second metadata.
  • the timeout time parameter refers to setting a specific timeout point for the second metadata, for example, setting the timeout point to 02:00:00 on November 04, 2011, if the second content distribution network receives the second element. After the data, the time attribute of the second metadata is viewed. If the timeout point is exceeded, indicating that all the contents of the second metadata are invalid, the second content distribution network sends the element to the first content distribution network because the second metadata has expired. A data request message to obtain updated second metadata.
  • the method may further include the following steps: When the distribution parameter further includes a timing verification validity time interval parameter, the first content distribution network receives the verification request message periodically sent by the second content distribution network according to the timing verification validity time interval parameter, and if the second metadata is valid, The second content distribution network sends a verification success message, and if the second metadata has expired, sends the updated second metadata to the second content distribution network.
  • the distribution parameter further includes a timing verification validity time interval parameter
  • the first content distribution network receives the verification request message periodically sent by the second content distribution network according to the timing verification validity time interval parameter, and if the second metadata is valid, The second content distribution network sends a verification success message, and if the second metadata has expired, sends the updated second metadata to the second content distribution network.
  • the timing verification validity interval parameter refers to setting a time interval indicating that the second content distribution network timing is required to verify the validity of the second metadata to the first content distribution network, for example, the time interval may be set. For 24 hours, the second content distribution network will verify the validity of the second metadata to the first content distribution network every 24 hours to ensure that the second content distribution network can obtain the updated second metadata.
  • the first content distribution network may distribute the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter, where the first content distribution network may be the second metadata. Storing in a file, the first content distribution network distributes the second metadata to the second content distribution network in a file transfer manner; or, the first content distribution network carries the second metadata in the message body, the first content distribution network The second metadata is distributed to the second content distribution network in a manner of message signaling transmission.
  • the first content distribution network may store the second metadata in a file and transmit the file to the second content distribution network, and the first content distribution network may also carry the second metadata in a message body such as an extensible markup language. (XML, Extensible Markup Language), transmitted to the second content distribution network by message signaling.
  • XML Extensible Markup Language
  • the first content distribution network generates the second metadata based on the first metadata and the policy of the first content distribution network, where the second metadata includes the distribution parameters of the first metadata and the second metadata. And transmitting, by the first content distribution network, the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter, so that the second content distribution network controls the content sent to the user equipment according to the second metadata.
  • the above embodiment describes a method for processing metadata implemented by the first content distribution network in the embodiment of the present invention.
  • a method for processing metadata implemented by the second content distribution network in the embodiment of the present invention is described. As shown, including the steps:
  • the second content distribution network receives the second metadata sent by the first content distribution network according to the distribution manner indicated by the distribution mode parameter of the second metadata.
  • the second metadata includes a first metadata and a distribution parameter of the second metadata
  • the distribution parameter of the second metadata includes a distribution mode parameter
  • the distribution mode parameter is used to indicate a distribution manner of the second metadata
  • the first The metadata is sent by the content provider CP to the first content distribution network.
  • the CDN that communicates with the first content distribution network is referred to as a downstream content distribution network, that is, the second content distribution network in the embodiment of the present invention, the second content distribution network, and the first content distribution.
  • the distribution network processes the user request and delivers the content for the user.
  • the second content distribution network is in turn contracted with the second content distribution network of the previous level, and the content is directly delivered to the user by the second content distribution network of the last level.
  • the first content distribution network may generate the second metadata based on the first metadata and the policy of the first content distribution network, where the generated second metadata includes the first metadata and the distribution mode parameter,
  • the second content distribution network acquires the second metadata from the first content distribution network.
  • the distribution mode refers to how to distribute the metadata in the CDN interworking system.
  • the first content distribution network may determine the distribution mode according to a predefined policy of the CDN service provider or the administrator.
  • the distribution manner may specifically include three types. The static pre-distribution mode, the dynamic acquisition mode, and the hybrid distribution mode. For details of the three distribution modes, refer to the related description in the first embodiment, and details are not described herein again.
  • the second content distribution network receives the second metadata sent by the first content distribution network according to the distribution manner indicated by the distribution mode parameter of the second metadata, and an achievable manner is, including :
  • the distribution parameter of the second metadata further includes a distribution depth parameter
  • the second content distribution network receives the notification message sent by the first content distribution network, and the notification message includes the storage of the second metadata. address.
  • the second content distribution network sends a metadata request message to the first content distribution network according to the storage address.
  • the second content distribution network receives the second metadata transmitted by the first content distribution network.
  • the first content distribution network actively sends a notification message to the second content distribution network to make the second content before the request of the user equipment comes.
  • the distribution network is configured to obtain the second metadata, where the notification message includes the storage address of the second metadata, and the notification message may further include an acquisition manner.
  • the notification message does not need to include the acquisition mode, if the first content distribution network language is between the second content distribution network If the acquisition method is not pre-agreed, the notification message needs to include the acquisition method.
  • the second content distribution network receives the notification message sent by the first content distribution network, and the storage address is a URL of the second metadata in the first content distribution network, for example, http://sina.www.cdn.com/metadata/sina.
  • the xml is obtained by using the HTTP method.
  • the storage address is the FTP address of the first content distribution network.
  • the acquisition method is the FTP file download mode, and the second content distribution network receives the ftp file. After the notification message, it can be known which storage address to which the second metadata is obtained.
  • the distribution depth parameter is a depth at which the second metadata is allowed to be distributed in the CDN interworking system.
  • the first content distribution network may set the distribution depth parameter to be 4, indicating the second metadata.
  • the third-level CDN may be delivered in series, and the third-level CDN is specifically the second content distribution network, the second content distribution network 1, the second content distribution network 2, and the second metadata distribution.
  • the path may be: a first content distribution network -> a second content distribution network -> a second content distribution network 1 -> a second content distribution network 2. At this time, even if the second content distribution network 2 and the second content distribution network 3 are intercommunicated, since the distribution depth parameter takes a value of 4, the second metadata cannot be further distributed to the second content distribution network 3 according to the distribution depth parameter element.
  • step C2 after the second content distribution network receives the notification message, the second content distribution network returns a notification message to the first content distribution network to receive the response, and then the second content distribution network sends the notification message to the storage address according to the acquisition mode and the storage address.
  • the metadata request message acquires the second metadata, that is, requests the metadata to the first content distribution network.
  • the first content distribution network transmits the second metadata to the second content distribution network according to the obtaining manner, for example, the first content distribution network transmits the second metadata to the second content distribution network according to the HTTP method, or The content distribution network transmits the second metadata to the second content distribution network according to the FTP file downloading manner, and the second content distribution network receives the second metadata transmitted by the first content distribution network.
  • the second content distribution network receives the transmission of the first content distribution network.
  • the second metadata may further include the following steps: the second content distribution network decrements the distribution depth parameter by 1, and the second content distribution network determines whether the distribution depth parameter is zero, and if the distribution depth parameter is not zero, then the second element is The data distributes the second metadata to the second content distribution network of the next level, so that the second content distribution network of the next level controls the content transmitted to the user equipment according to the second metadata.
  • the first content distribution network may set the value of the distribution depth parameter.
  • the second metadata may be sent to the third-level CDN in series in addition to the first content distribution network, and the third-level CDN is specifically the second content distribution network, the second content distribution network, and the second content distribution.
  • Network 2 the distribution path of the second metadata may be: a first content distribution network -> a second content distribution network -> a second content distribution network 1 -> a second content distribution network 2, the first content distribution network receives the first The binary data is then decremented by one, and then the second metadata is sent to the second content distribution network. After receiving the second metadata, the second content distribution network determines that the distribution depth parameter is 3, and reduces the distribution depth parameter.
  • the second content distribution network 1 After being sent to the second content distribution network 1, the second content distribution network 1 decrements the distribution depth parameter by 1 after receiving the second metadata, determines that the distribution depth parameter is 2, and sends the distribution depth parameter to the second content distribution network. 2, after receiving the second metadata, the second content distribution network 2 decrements the distribution depth parameter by 1 and finds that the distribution depth parameter is 0 at this time, even if the second content is divided.
  • the transmission network 2 and the second content distribution network 3 are interworking, but since the distribution depth parameter takes a value of 4, the second metadata cannot be distributed to the second content distribution network 3 according to the distribution depth parameter being zero.
  • the second content distribution network receives the second metadata sent by the first content distribution network according to the distribution manner indicated by the distribution mode parameter of the second metadata, and another achievable manner is: Includes:
  • the second content distribution network receives the service request message forwarded by the first content distribution network, and the second content distribution network locally stores the first content distribution network that needs to be contacted for the service request message.
  • the address, the service request message carries the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs.
  • the second content distribution network sends a metadata request message to the first content distribution network according to the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs.
  • the second content distribution network receives the second metadata transmitted by the first content distribution network.
  • the first content distribution network is a CDN directly contracted with the CP
  • the first content distribution network checks, according to the information in the service request message, such as the IP address, that the user equipment is currently located in an area that is not covered by the first content distribution network, and the first content distribution network further checks.
  • the area covered by the interworking CDN checks that the network of the second content distribution network covers the area, and the user equipment can be served through the second content distribution network, so that the service request message of the user is finally routed to the second content distribution network.
  • the service request message carries the identifier of the content requested by the UE or the identifier of the CP to which the content requested by the UE belongs.
  • the second content distribution network sends a metadata request message to the first content distribution network according to the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs, and the metadata request message carries the metadata that needs to be requested.
  • the logo can be a specific metadata file only, ⁇ port sina.www.cdn.com/metadata/sina.xml, or it can be a content tag, indicating that the requested metadata is associated with the content, port www. Cpl.com/video/avantar.rm, which can also be CP i or a name, indicating that all metadata of the CP is requested, such as www.cpl.com; the first content distribution network.
  • the first content distribution network verifies the identity of the second content distribution network and returns the requested metadata. For example, the first content distribution network transmits the second metadata to the second content distribution network according to the HTTP method, or the first content distribution network transmits the second metadata to the second content distribution network according to the FTP file download mode.
  • the second content distribution network receives the second metadata sent by the first content distribution network according to the distribution manner indicated by the distribution mode parameter of the second metadata, and another achievable manner is: Includes:
  • the distribution mode is the hybrid distribution mode
  • the second content distribution network is acquired from the first content distribution network according to the static pre-distribution mode.
  • the second content distribution network is acquired from the first content distribution network according to the dynamic acquisition manner.
  • step C7 the following steps may be specifically included:
  • the distribution parameter of the second metadata further includes a distribution depth parameter
  • the second content distribution network receives the notification message sent by the first content distribution network, and the notification message includes the storage of the second metadata. address.
  • the second content distribution network sends a metadata request message to the first content distribution network according to the storage address.
  • the second content distribution network receives the storage address transmitted by the first content distribution network.
  • step C8 the following steps may be specifically included:
  • the second content distribution network receives the service request message forwarded by the first content distribution network, where the service request message carries the identifier of the content requested by the user equipment or the content of the CP requested by the user equipment. logo.
  • the second content distribution network sends a metadata request message to the first content distribution network according to the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs.
  • the second content distribution network receives the remaining metadata transmitted by the first content distribution network.
  • the method may further include the following steps:
  • the distribution parameter further includes a timeout time parameter
  • the second content distribution network sends a metadata request message to the first content distribution network, and the second content distribution network receives the first content distribution.
  • the updated second metadata sent by the network is not limited to a timeout time parameter
  • the timeout time parameter refers to setting a specific timeout point for the second metadata, for example, setting the timeout point to 02:00:00 on November 04, 2011, if the second content distribution network receives the second element. After the data, the time attribute of the second metadata is viewed. If the timeout point is exceeded, indicating that all the contents of the second metadata are invalid, the second content distribution network sends the element to the first content distribution network because the second metadata has expired. The data request message is to obtain the updated second metadata.
  • the method may further include the following steps:
  • the second content distribution network sends an authentication request message to the first content distribution network according to the timing verification validity time interval parameter timing, and if the second metadata has expired, the second content The distribution network receives the updated second metadata transmitted by the first content distribution network.
  • the timing verification validity interval parameter refers to setting a time interval to require the second content distribution network timing to verify the validity of the second metadata to the first content distribution network. For example, the time interval may be set to 24 hours. Then, the second content distribution network verifies the validity of the second metadata to the first content distribution network every 24 hours to ensure that the second content distribution network can obtain the updated second metadata. It should be noted that, in the embodiment of the present invention, the second content distribution network may receive the second content distribution that is sent by the first content distribution network according to the distribution mode indicated by the distribution mode parameter of the second metadata.
  • the network acquires the second metadata from the first content distribution network in a file transmission manner, where the second metadata is saved in the file; or the second content distribution network acquires the second content from the first content distribution network by way of signaling transmission Metadata, where the second metadata is stored in the message body.
  • the first content distribution network may store the second metadata in a file and transmit the file to the second content distribution network, and the first content distribution network may also save the second metadata in a message body such as XML.
  • the message signaling is transmitted to the second content distribution network.
  • the second content distribution network controls content sent to the user equipment according to the second metadata.
  • the second content distribution network controls the content sent to the user equipment according to the second metadata.
  • the first metadata may specifically include: data that the CP describes the content or data that controls the delivery of the content.
  • the data for controlling the delivery of the content may specifically include: restricting the content to be used only in the preset area and/or restricting the content to be used only within the preset time; for example, the CP does not allow the user other than the Beijing area to use the Content, CP does not allow the content to be used after 22:00 every day.
  • the controlling, by the second content distribution network, the content that is sent to the user equipment according to the second metadata may include:
  • the second content distribution network checks whether the location of the user equipment is in an area designated by the CP that is not allowed to be distributed, and if so, rejects the service request of the user equipment. And/or, the second content distribution network checks whether the time attribute of the content in the binary data is within the time specified by the CP, and if not, rejects the service request of the user equipment.
  • the second content distribution network controls the content sent to the user equipment according to the second metadata, and further includes the following steps:
  • the second content distribution network sends the user identity information to the CP, and the second content distribution network receives the identity verification result fed back by the CP, and only after the identity verification result is passed, can the user device be Deliver content.
  • the user authentication parameter refers to the user that needs to verify the user equipment that initiates the service request. If the second metadata distribution network includes the user authentication parameter, the second content distribution network sends the user identity information to the CP after receiving the metadata, and after the CP receives the user identity information, the CP verifies the user identity of the user device. Information, the CP feeds back the authentication result to the second content distribution network.
  • the second content distribution network controls the content sent to the user equipment according to the second metadata, and may further include the following steps:
  • the second content distribution network determines whether the second metadata expires according to the timeout parameter in the second metadata, and if so, rejects the service request of the user equipment.
  • the second content distribution network acquires the second metadata from the first content distribution network, where the second metadata includes the first metadata and the distribution parameters of the second metadata, and the second content distribution network is configured according to the second content distribution network.
  • the second metadata controls the content sent to the user equipment, and implements processing of the metadata in the CDN interworking scenario.
  • a CDN 300 is a first content distribution network.
  • the first content distribution network is a content distribution network contracted with a CP, and is respectively connected to a CP and a second content distribution network, and the first content distribution is performed.
  • Network 300 includes:
  • the obtaining unit 301 is configured to acquire first metadata sent by the CP.
  • the generating unit 302 is configured to generate second metadata based on the first metadata and the policy of the first content distribution network 300, where the second metadata includes the first metadata and the distribution parameter of the second metadata, where The distribution parameter of the second metadata includes a distribution mode parameter, and the distribution mode parameter is used to indicate a distribution manner of the second metadata.
  • the distribution unit 303 is configured to distribute the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter.
  • the policy includes: central storage capability and cache acceleration capability of the second content distribution network, and content injection.
  • the reason that the static pre-injection, the first content distribution network, and the second content distribution network communicate with each other is the traffic offloading, and the generating unit 302 includes:
  • the first determining module is configured to determine, according to the policy, a distribution manner as a static pre-distribution mode.
  • a first generating module configured to generate second metadata according to the first metadata and the static pre-distribution mode, where the distribution mode indication is distributed in a static pre-distribution mode, and the distribution in the second metadata distribution parameter
  • the parameters also include a distribution depth parameter, which is the depth at which the second metadata is allowed to be distributed in the CDN interworking system.
  • the distribution unit 303 includes:
  • a first sending module configured to send a notification message to the second content distribution network, where the notification message includes a storage address of the second metadata, so that the second content distribution network sends the metadata to the storage address of the second metadata Request message.
  • the first receiving module is configured to receive a metadata request message sent by the second content distribution network.
  • the first sending module is further configured to transmit the second metadata to the second content distribution network according to the metadata request message.
  • the obtaining unit 301 is further configured to receive a service request message sent by the UE through the CP.
  • the content distribution network 300 further includes: a sending unit, configured to forward the service request message to the second content distribution network, so that the second content distribution network performs content delivery control on the user equipment according to the second metadata.
  • the policy needs to use the cache acceleration capability of the second content distribution network, and the content injection method is dynamic.
  • the reason for the acquisition mode, the first content distribution network, and the second content distribution network to communicate is to expand the coverage area.
  • the generating unit 302 includes:
  • the second determining module is configured to determine, according to the policy, a distribution manner as a dynamic acquisition manner.
  • the second generation module is configured to generate the second metadata according to the first metadata and the dynamic acquisition manner, where the second distribution mode parameter is a dynamic acquisition mode.
  • the distribution unit 303 includes:
  • the second receiving module is configured to receive a service request message sent by the user equipment by using the CP.
  • the second sending module is configured to send the service request message to the second content distribution network, where the service request message carries the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs.
  • the second receiving module is further configured to receive, according to the content requested by the user equipment, the second content distribution network A metadata request message sent by the identifier of the CP to which the content requested by the user equipment belongs.
  • the second sending module is further configured to transmit the second metadata to the second content distribution network according to the metadata request message.
  • the policy includes requesting to acquire the second metadata directly from the first content distribution network in order to enable the second content distribution network that directly delivers the content to the user equipment.
  • the generating unit 302 includes:
  • a third determining module configured to determine, according to the policy, a distribution manner as a hybrid distribution manner.
  • a third generation module configured to generate second metadata according to the first metadata and the hybrid distribution manner, where the distribution mode indicates that the distribution mode is a hybrid distribution mode, and the hybrid distribution mode is a static pre-distribution for the storage address of the second metadata
  • the distribution mode of the mode is sent to the second content distribution network, and the remaining metadata other than the storage address of the second metadata is sent to the second content distribution network through the dynamic acquisition mode.
  • the distribution unit 303 includes:
  • a third sending module configured to send, by using a static pre-distribution manner, a storage address of the second metadata to the second content distribution network, and send the second element to the second content distribution network by using a dynamic acquisition manner The remaining metadata outside the storage address of the data.
  • the obtaining unit 301 and the distributing unit 303 another implementation manner is that when the distribution parameter further includes a timeout time parameter, the obtaining unit 301 is further configured to receive the second content distribution network.
  • the binary data determines, according to the timeout time parameter, a metadata request message that has been timed out and sent; the distribution unit 303 is further configured to send the updated second metadata to the second content distribution network.
  • the distribution unit 303 is further configured to use the second metadata. Effectively, the verification success message is sent to the second content distribution network, and if the second metadata has expired, the updated second metadata is sent to the second content distribution network.
  • the distribution unit 303 is specifically configured to save the second metadata in the file, and divide the second content into a file by way of file transmission.
  • the sending network sends a file; or, the distributing unit 303 is specifically configured to save the second metadata in the message body, and send the message to the second content distribution network in a manner of message signaling transmission.
  • the first content distribution network generates the second metadata based on the first metadata and the policy of the first content distribution network, where the second metadata includes the first metadata and the distribution parameters of the second metadata. And transmitting, by the first content distribution network, the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter, so that the second content distribution network controls the content sent to the user equipment according to the received second metadata. .
  • the second content distribution network 400 includes:
  • the obtaining unit 401 is configured to receive second metadata that is sent by the first content distribution network according to the distribution manner indicated by the distribution mode parameter of the second metadata, where the second metadata includes the first metadata and the second metadata.
  • a distribution parameter the distribution parameter of the second metadata includes a distribution mode parameter, the distribution mode parameter is used to indicate a distribution manner of the second metadata, and the first metadata is sent by the content provider CP to the The first content distribution network.
  • the content control unit 402 is configured to control content sent to the user equipment according to the second metadata.
  • the distribution parameter of the second metadata further includes a distribution depth parameter.
  • the distribution depth parameter is a depth at which the second metadata is allowed to be distributed in the CDN interworking system, and the obtaining unit 401 includes:
  • the first receiving module is configured to receive a notification message sent by the first content distribution network, where the notification message includes a storage address of the second metadata.
  • a first sending module configured to send a metadata request to the first content distribution network according to the storage address
  • the first receiving module is further configured to receive second metadata transmitted by the first content distribution network.
  • the second content distribution network 400 also includes (not shown in Figure 4):
  • a distribution unit configured to decrement the distribution depth parameter by 1 to determine whether the distribution depth parameter is zero; when the distribution depth parameter is not zero, distribute the second element to the second content distribution network of the next level to the second level
  • the data is such that the second content distribution network of the next level controls the content transmitted to the user equipment according to the second metadata.
  • the obtaining unit 401 includes:
  • a second receiving module configured to receive a service request message that is forwarded by the first content distribution network, where the service request message is sent by the user equipment to the first content distribution network, where the service request message carries the user equipment request The identifier of the content or the identifier of the CP to which the content requested by the user equipment belongs.
  • a second sending module configured to send a metadata request message to the first content distribution network according to the identifier of the content requested by the user equipment or the identifier of the CP to which the content requested by the user equipment belongs;
  • the second receiving module is further configured to receive second metadata transmitted by the first content distribution network.
  • the obtaining unit 401 includes:
  • the first obtaining module is configured to obtain, from the first content distribution network, a static pre-distribution manner for the storage address of the second metadata.
  • a second obtaining module configured to acquire, from the first content distribution network, the remaining metadata other than the storage address of the second metadata according to the dynamic acquisition manner.
  • the second content distribution network 400 further includes: when the second metadata further includes a timeout parameter, the second content distribution network 400 further includes:
  • the first sending unit is configured to send a metadata request message to the first content distribution network according to the timeout time parameter, if the second metadata has expired.
  • the first receiving unit is configured to receive the updated second metadata sent by the first content distribution network. It should be noted that, for the second content distribution network 400, another achievable manner is that when the second metadata further includes a timing verification validity time interval parameter, the second content distribution network 400 further includes: And a second sending unit, configured to send an authentication request message to the first content distribution network according to the timing verification validity time interval parameter timing.
  • a second receiving unit configured to receive the updated second metadata sent by the first content distribution network when the second metadata has expired.
  • the content control unit 402 further includes:
  • a third sending module configured to send user identity information to a source server of the CP
  • the third receiving module is configured to receive an authentication result fed back by the source server of the CP.
  • the first metadata includes: data that the CP describes the content or data that controls the delivery of the content, and controls the delivery of the content.
  • the data includes: Restricted content is only allowed to be used within the preset area and/or the restricted content is only allowed to be used within the preset time.
  • the content control unit 402 is specifically configured to check whether the location where the user equipment is located is in an area designated by the CP that is not allowed to be distributed, and if yes, reject the service request of the user equipment. And/or, the content control unit 402 is specifically configured to check whether the time attribute of the content in the second metadata is within a time specified by the CP, and if not, reject the service request of the user equipment.
  • the content control unit 402 is specifically configured to use the timeout period in the second metadata.
  • the parameter determines whether the time attribute of the content of the second metadata expires, and if so, rejects the service request of the user equipment.
  • the second content distribution network acquires the second metadata from the first content distribution network, where the second metadata includes the first metadata and the distribution parameters of the second metadata, and the second content distribution network is configured according to The second metadata controls the content sent to the user equipment, and implements processing of the metadata in the CDN interworking scenario.
  • a CDN interworking system 500 includes: a CP 501, a first content distribution network 502, a second content distribution network 503, and a UE 504, where
  • the CP 501 is configured to provide the first content distribution network 502 with the first content distribution network to provide the first metadata.
  • the first content distribution network 502 can be a first content distribution network as shown in FIG. 3, and details are not described herein again.
  • the second content distribution network 503 may be a second content distribution network as shown in FIG. 4, and details are not described herein again.
  • the UE 504 is configured to send service request information to the first content distribution network.
  • the second content distribution network 503 in FIG. 5 may be used, if there are multiple seconds in the CDN interworking system 500.
  • the content distribution network in this case, the second content distribution network 503 in FIG. 5 may specifically include: a first level second content distribution network 5031 in FIG. 6, an intermediate level second content distribution network 5032, and a second level. Content distribution network 5033. It should be noted that if there are two second content distribution networks in the CDN interworking system 500, there is no intermediate level second content distribution network 5032 at this time, and the second content distribution network 503 includes only the first level second content distribution network. 5031. The last level second content distribution network 5033.
  • the second content distribution network 503 includes a first level second content distribution network 5031, an intermediate level second content distribution network 5032, and a last level second content distribution network 5033. . If there are more than three second content distribution networks in the CDN interworking system 500, the second content distribution network 503 includes only the first level second content distribution network 5031, the intermediate level second content distribution network 5032, and the last level second. Content distribution network 5033, but the intermediate level second content distribution network 5032 refers to all second content in the second content distribution network 503 except the first level second content distribution network 5031 and the last level second content distribution network 5033 Distribution network.
  • first-level second content distribution network 5031 the intermediate-level second content distribution network 5032, and the last-level second content distribution network 5033 included in the second content distribution network 503 will be described in detail.
  • a first level second content distribution network 5031 configured to obtain a second element from the first content distribution network According to, and sent to the intermediate level second content distribution network.
  • the intermediate level second content distribution network 5032 is configured to receive the second binary data from the first level second content distribution network and forward the data to the last level second content distribution network.
  • the last level second content distribution network 5033 is configured to receive the second metadata; and control the content sent to the user equipment according to the second metadata.
  • Another implementation is when the distribution method is dynamic acquisition mode.
  • the last level second content distribution network 5033 is configured to request the second metadata from the intermediate level second content distribution network 5032.
  • the intermediate level second content distribution network 5032 is configured to request second metadata from the first level second content distribution network 5031.
  • the first level second content distribution network 5031 is configured to obtain the second metadata from the first content distribution network and send the second metadata to the last level second content distribution network 5033.
  • the last level second content distribution network 5033 is configured to receive the second metadata from the first level second content distribution network 5031; and control the content sent to the user equipment according to the second metadata.
  • the first level second content distribution network 5031 is configured to obtain a storage address of the second metadata from the first content distribution network, and send the same to the intermediate level second content distribution network 5032.
  • the intermediate level second content distribution network 5032 is configured to receive the storage address of the second binary data from the first level second content distribution network, and forward 5033 to the last level second content distribution network.
  • the last level second content distribution network 5033 is configured to receive a storage address of the second metadata.
  • the last level second content distribution network 5033 is configured to request, directly from the first level second content distribution network 5031, the remaining metadata other than the storage address of the second metadata according to the storage address.
  • the last level second content distribution network 5033 is configured to acquire, from the first content distribution network, remaining metadata other than the storage address of the second binary data; and control the content sent to the user equipment according to the second metadata.
  • part of the metadata delivered by the static pre-distribution method includes at least the storage address of the remaining metadata in the first content distribution network, and the last-level second content distribution network may be based on the remaining The storage address of the residual metadata in the first content distribution network directly requests the first content distribution network to acquire the remaining metadata.
  • the first content distribution network generates the second metadata based on the first metadata and the policy of the first content distribution network, and the second content distribution network obtains the second metadata from the first content distribution network, where
  • the second metadata includes a first metadata and a distribution parameter of the second metadata, the distribution parameter includes a distribution mode parameter, and the first content distribution network distributes the second metadata to the second content distribution network according to the distribution manner indicated by the distribution mode parameter,
  • the second content distribution network controls the content sent to the user equipment according to the received second metadata, and implements processing of the metadata in the CDN interworking scenario.
  • the medium can be a read only memory, a magnetic disk or a compact disk or the like.

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Abstract

L'invention concerne un procédé et dispositif de traitement de métadonnées et un système d'intercommunication par réseau de distribution de contenu (CDN) appliqués au traitement de métadonnées dans un cas d'intercommunication par CDN. Le procédé selon le mode de réalisation de la présente invention comprend : un premier CDN obtenant les premières métadonnées envoyées par un fournisseur de contenu (CP) ; le premier CDN générant les secondes métadonnées basées sur les premières métadonnées et une politique du premier CDN, les secondes métadonnées comprenant les paramètres de distribution des premières métadonnées et des secondes métadonnées, le paramètre de distribution des secondes métadonnées comprenant un paramètre de mode de distribution et le paramètre de mode de distribution étant utilisé pour indiquer un mode de distribution des secondes métadonnées ; et le premier CDN fournissant les secondes métadonnées à un second CDN selon le mode de distribution indiqué par le paramètre de mode de distribution.
PCT/CN2012/078143 2011-11-23 2012-07-04 Procédé et dispositif de traitement de métadonnées et système d'intercommunication par cdn WO2013075502A1 (fr)

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