Generally described, computing devices and communication networks can be utilized to exchange information. In a common application, a computing device can request content from another computing device via the communication network. For example, a user at a personal computing device can utilize a software browser application to request a Web page from a server computing device via the Internet. In such embodiments, the user computing device can be referred to as a client computing device and the server computing device can be referred to as a content provider.
Content providers are generally motivated to provide requested content to client computing devices often with consideration of efficient transmission of the requested content to the client computing device and/or consideration of a cost associated with the transmission of the content. For larger scale implementations, a content provider may receive content requests from a high volume of client computing devices which can place a strain on the content provider's computing resources. Additionally, the content requested by the client computing devices may have a number of components, which can further place additional strain on the content provider's computing resources.
With reference to an illustrative example, a requested Web page, or original content, may be associated with a number of additional resources, such as images or videos, that are to be displayed with the Web page. In one specific embodiment, the additional resources of the Web page are identified by a number of embedded resource identifiers, such as uniform resource locators (“URLs”). In turn, software on the client computing devices typically processes embedded resource identifiers to generate requests for the content. Often, the resource identifiers associated with the embedded resources reference a computing device associated with the content provider such that the client computing device would transmit the request for the additional resources to the referenced content provider computing device. Accordingly, in order to satisfy a content request, the content provider would provide client computing devices data associated with the Web page as well as the data associated with the embedded resources.
Some content providers attempt to facilitate the delivery of requested content, such as Web pages and/or resources identified in Web pages, through the utilization of a content delivery network (“CDN”) service provider. A CDN service provider typically maintains a number of computing devices in a communication network that can maintain content from various content providers. In turn, content providers can instruct, or otherwise suggest to, client computing devices to request some, or all, of the content provider's content from the CDN service provider's computing devices.
With reference to the previous illustrative example, the content provider can leverage a CDN service provider with the modification or substitution of resource identifiers associated with the embedded resources. Specifically, the resource identifiers can reference a computing device associated with the CDN service provider such that the client computing device would transmit the request for the additional resources to the referenced CDN service provider computing device. Typically, the content provider facilitates the utilization of a CDN service provider by including CDN-provider specific resource identifiers in requested content (e.g., Web pages). This approach generally corresponds to an “offline” process implemented by the content provider in advance of receipt of a request for the original content from the client computing devices. Accordingly, modifications to resource identifiers, such as to provide alternative resource identifiers for the same CDN service provider, to provide additional information utilized by CDN service providers in processing the request for content and/or to identify alternative CDN service providers, can become inefficient as they typically require implementation of the offline process of the content provider.
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
Generally described, the present disclosure is directed to the management of resource identifiers utilized by a client computing device to request content from a network resource, such as content delivery network (“CDN”) service providers. Specifically, aspects of the disclosure will be described with regard to the processing, by a client computing device, of original resource identifiers associated with embedded resources with translation information provided by a CDN service provider. Although various aspects of the disclosure will be described with regard to illustrative examples and embodiments, one skilled in the art will appreciate that the disclosed embodiments and examples should not be construed as limiting.
Additionally, the client computing devices 102 may also include necessary hardware and software components to execute, or otherwise process, translation information as will be described in greater detail below. One skilled in the relevant art will appreciate the additional hardware/software components for processing the translation information that may be included with the execution of a multi-purpose software application, such as a browser software application. Alternatively, some or all of the additional hardware/software components may be embodied in stand alone or specialized components configured for the processing of the translation information.
The content delivery environment 100 can also include a content provider 104 in communication with the one or more client computing devices 102 via the communication network 108. The content provider 104 illustrated in
With continued reference to
In an illustrative embodiment, the DNS component 118, 124, 130 and resource cache component 120, 126, 132 are considered to be logically grouped, regardless of whether the components, or portions of the components, are physically separate. Additionally, although the POPs 116, 122, 128 are illustrated in
Although not illustrated in
With reference now to
With reference to
One skilled in the relevant art will appreciate that upon identification of appropriate origin servers 112, the content provider 104 can begin to direct requests for content from client computing devices 102 to the CDN service provider 106. Specifically, in accordance with DNS routing principles, a client computing device request corresponding to a resource identifier would eventually be directed toward a POP 116, 122, 128 associated with the CDN service provider 106. In the event that the resource cache component 120, 126, 132 of a selected POP does not have a copy of a resource requested by a client computing device 102, the resource cache component will request the resource from the origin server 112 previously registered by the content provider 104.
With continued reference to
The CDN service provider 106 returns the translation request code to the content provider 104 along with any additional information. In turn, the content provider 104 can then store for the translation request code for embedding in requested content or otherwise embed (or associate) the translation request code with requested content (such as Web page markup language). In an illustrative embodiment, the translation request code can be applicable to multiple content providers 104. Alternatively, the translation request code can be unique to each particular content provider 104. Still further, the CDN service provider 106 may provide additional logic to the content providers 104 that controls the circumstances and/or methodologies for embedding the translation request code into content. For example, the translation request code can include instructions (or executable code) that defines that the type of content (e.g., specific Web pages) for which the translation request code will apply.
With reference now to
Generally, the identification of the resources provided by the content provider 104 will be in the form of a resource identifier that can be processed by the client computing device 102, such as through a browser software application. In an illustrative embodiment, the resource identifiers can be in the form of a uniform resource locator (“URL”). Because the resource identifiers are included in the requested content directed to the content provided, the resource identifiers can be referred to generally as the “original URL.” For purposes of an illustrative example, the original URL can identify a domain of the content provider 104 (e.g., contentprovider.com), a name of the resource to be requested (e.g., “resource.xxx”) and a path where the resource will be found (e.g., “path”). In this illustrative example, the original URL has the form of:
With reference now to
As illustrated in
Upon receipt of the translation information request, the CDN service provider 106, such as through POP 116, generates translation information that will be used to process the original URLs associated with the embedded objects. In an illustrative embodiment, translation information corresponds to information that will be used to modify the URL for subsequent processing by the CDN service provider 106. Such information will include the identification of one or more domain names associated with the CDN service provider 106 that will cause the request for content to be resolved to the CDN service provider 106 and not the content provider 104. The translation information can also include additional processing information that allows the CDN service provider 106 to select which POP, resource cache component or specific cache server computing device will provide requested content. For example, the translation information can include information identifying the specific content provider, a particular regional coverage plan associated with the content provider 104, service level plans associated with the content provider 104, a geographic location/region associated with the client computing device 102, and the like.
In another embodiment, the translation information can include the identification of specific network addresses of the cache server components that will process the resource request from the client computing device 102. In such an embodiment, any subsequent URL processing can be omitted altogether and the resource may be immediately be requested by the client computing device 102.
In both the embodiment in which a URL is modified or replaced by an IP address of a cache server component, the translation information can include rules or other information that specifies the applicability of the various identified domains/IP addresses to the original URLs, the manner in which an original URL is to be modified, expiration timeframes for the translation information and the like. The translation information is then returned to the requesting client computing device 102.
With reference now to
As described above, the processing of the translation information results in the modification, or replacement, of the original URL, referred to generally as the translated identifier. In one embodiment, the translation process results in the identification of an IP address of a cache server component that will process the request for the associated resource. In this embodiment, the no additional translation or URL processing steps are required.
In another embodiment, the processing of the translation information results in the generation of a URL that may require additional processing. Specifically, in this embodiment, the translated identifier is a translated URL modified such that requests for the resources associated with the translated URLs resolve to a POP associated with the CDN service provider 106. In one embodiment, the translated URL identifies the domain of the CDN service provider 106 (e.g., “cdnprovider.com”), the same name of the resource to be requested (e.g., “resource.xxx”) and the same path where the resource will be found (e.g., “path”). Additionally, the translated URL can include additional processing information (e.g., “additional information”). The translated URL would have the form of:
In another embodiment, the information associated with the CDN service provider 106 is included the modified URL, such as through prepending or other techniques, such that the translated URL can maintain all of the information associated with the original URL. In this embodiment, the translated URL would have the form of:
As previously described, the translation information can include rules, or other processing information, that can specify which original URLs should be modified and/or the translation information that can be used to modify specific original URLs. Still further, in another embodiment, the processing of the requested content from the content provider 104 may result in the request of the embedded original URLs prior to the receipt of the translation information from the CDN service provider 106. In one approach, the client computing device 102 may issue one or more resource requests according to the information in the original URL until the translation information is received and any remaining original URLs can be translated. In another approach, the original URLs can correspond to non-functional resource identifiers that can only be processed upon completion of the translation process. In still a further approach, the original URLs can correspond to intermediary resource identifiers that can be partially processed by the client computing device 102 upon the initial processing of the requested content but that can only be finalized after completion of the translation process. One skilled in the relevant art will appreciate that the particular technique for translation and the management of URL translation in advance of the issuance of resource requests may vary according to the type of software application generating the resource requests, the specific capabilities of the networking protocol, the specific rules associated with the processing of the markup language (or other information) of the requested content, and the combination thereof.
With continued reference to
In accordance with an illustrative embodiment related to a translated URL and with reference to the illustrative example of the translated URL “http://additional_information.contentprovider.com/path/resource.xxx”, the request for an embedded resource associated with a URL by the client computing device 102 corresponds to a first DNS query for the translated URL that results in the identification of a DNS server authoritative to the “.” and the “com” portions of the translated URL. After resolving the “.” and “com” portions of the embedded URL, the client computing device 102 then issues a subsequent DNS query for the translated URL that results in the identification of a DNS server authoritative to the “.cdnprovider” portion of the embedded URL.
In a manner similarly describe above, in an illustrative embodiment, the successful resolution of the “cdnprovider” portion of the translated URL identifies the IP address of a DNS server, or server, associated with CDN service provider 116. In a manner similarly described above, in one embodiment, the resolution of this portion of the translated URL can result in the identification a specific network address, such as a specific IP address, of a DNS server component of a POP. In another embodiment, the resolution of this portion of the translated URL can result in the identification of a network address shared by one or more POPs. In this embodiment, a further DNS request to the shared IP address utilizes a one-to-many network routing schema, such as anycast, such a specific POP will receive the request as a function of network topology.
In either of the above identified embodiments, a specific DNS server in the DNS component 118 of a POP 116 receives a DNS query. Once one of the DNS servers receives the request, the DNS server 118 identifies a cache server component that can provide the requested resource, such as cache component 120. Although in the illustrative example, the DNS component 118 selects the local cache component 120, one skilled in the relevant art will appreciate that the DNS server 118 may implement any manner of additional processing techniques for selecting a specific cache component of other POPs or a specific caching server computing device within any one of the POPs associated with the CDN service provider 106. Upon identification of a cache server, the DNS server provides an IP address of the cache server to the requesting client computing device 102. The client computer can then utilize communication protocols to acquire the resources from a cache server identified by the IP address. The requested resources are then processed by the browser application as appropriate.
With reference now to
Upon receipt of the content request, the content provider again identifies the appropriate responsive content. As described above, the requested content can correspond to a Web page that is displayed on the client computing device 102 via the processing of information. The requested content can also include a number of embedded resource identifiers that corresponds to resource objects that should be obtained by the client computing device 102 as part of the processing of the requested content. Additionally, the requested content will also include the embedded translation execution code previously provided by the CDN service provider 106. The responsive content is returned to the client computing device 102.
With reference now to
With reference now to
At block 806, the client computing device 102 transmits the request for translation information to the CDN service provider 106 identified in the translation execution code. As previously described, the request for translation information can include information that may be used by the CDN service provider 106 to generate, or select, the translation information. The additional information may be specifically included in the request for translation or inferred from aspects of the request (e.g., IP address of the client computing device 102). At block 808, the client computing device 102 obtains translation information from the CDN service provider 106.
At block 810, the client computing device 102 processes the embedded resource identifiers with the translation information. As previously described, the translation information can include data utilized to another software application to process the embedded, original URLs (such as a stand alone software application). Alternatively, the translation information can include instructions (such as script-based instructions) that call a software application (such as a browser application) to process the remaining portions of the translation information. As also previously described, the processing of the original, embedded URLs can correspond to the modification (including replacement) of the URLs such that a request for the resource associated with the embedded resource resolves to a POP associated with the CDN service provider 106. In still a further embodiment, the original URLs may be directly translated into an IP address of a cache server component such that further DNS resolution is not necessary. Any one of a variety of techniques or combination of techniques, some of which were previously illustrated, could be utilized to modify the original URLs.
At block 812, the client computing device 102 transmits requests for the resources associated with the translated URLs. In an illustrative embodiment, the request for the resources associated with the translated URLs can be facilitated through various networking protocols. At block 814, the routine 800 terminates. Additionally, the routine 800 can be implemented again to process resource identifiers received in subsequent content requests. In this application, however, blocks 806 and 808 may be omitted with the utilization of cached translation information obtained from a previous iteration of routine 800.
While illustrative embodiments have been disclosed and discussed, one skilled in the relevant art will appreciate that additional or alternative embodiments may be implemented within the spirit and scope of the present invention. Additionally, although many embodiments have been indicated as illustrative, one skilled in the relevant art will appreciate that the illustrative embodiments do not need to be combined or implemented together. As such, some illustrative embodiments do not need to be utilized or implemented in accordance with scope of variations to the present disclosure.
Conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements and/or steps. Thus, such conditional language is not generally intended to imply that features, elements and/or steps are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without user input or prompting, whether these features, elements and/or steps are included or are to be performed in any particular embodiment.
Any process descriptions, elements, or blocks in the flow diagrams described herein and/or depicted in the attached figures should be understood as potentially representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process. Alternate implementations are included within the scope of the embodiments described herein in which elements or functions may be deleted, executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those skilled in the art. It will further be appreciated that the data and/or components described above may be stored on a computer-readable medium and loaded into memory of the computing device using a drive mechanism associated with a computer readable storing the computer executable components such as a CD-ROM, DVD-ROM, or network interface further, the component and/or data can be included in a single device or distributed in any manner. Accordingly, general purpose computing devices may be configured to implement the processes, algorithms and methodology of the present disclosure with the processing and/or execution of the various data and/or components described above.
It should be emphasized that many variations and modifications may be made to the above-described embodiments, the elements of which are to be understood as being among other acceptable examples. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims.
This application is a divisional of U.S. patent application Ser. No. 14/548,221, entitled “NETWORK RESOURCE IDENTIFICATION” and filed on Nov. 19, 2014, which in turn is a divisional of U.S. patent application Ser. No. 14/066,516, now U.S. Pat. No. 8,930,544, entitled “NETWORK RESOURCE IDENTIFICATION” and filed on Oct. 29, 2013, which in turn is a divisional application of U.S. patent application Ser. No. 12/060,013, now U.S. Pat. No. 8,601,090, entitled “NETWORK RESOURCE IDENTIFICATION” and filed Mar. 31, 2008, the disclosures of which are incorporated herein by reference.
Number | Date | Country | |
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Parent | 14548221 | Nov 2014 | US |
Child | 15402131 | US | |
Parent | 14066516 | Oct 2013 | US |
Child | 14548221 | US | |
Parent | 12060013 | Mar 2008 | US |
Child | 14066516 | US |