Patent Publication Number: US-11665146-B2

Title: Migrating authenticated content towards content consumer

Description:
RELATED APPLICATIONS 
     This application is a Continuation of and claims benefit from U.S. patent application Ser. No. 15/290,927 that was filed on Oct. 11, 2016, which is a Continuation of U.S. patent application Ser. No. 14/477,765 (U.S. Pat. No. 9,509,666), filed Sep. 4, 2014, which is a continuation of U.S. patent application Ser. No. 13/307,017 (U.S. Pat. No. 8,843,758), filed Nov. 30, 2011 (issued Sep. 23, 2014), each of which is incorporated herein by reference in its entirety. 
    
    
     BACKGROUND 
     The quantity of digital data available via networks is immense. Information may be obtained over networks ranging from peer-to-peer networks and local area networks, to global networks such as the Internet. Various types of information may be obtained, including data that is intended to be available to any user, as well as more personalized data such as electronic mail (email), backup data, etc. In many cases, users need to submit credentials to demonstrate that they are authorized to view and/or access certain content. For example, a user may be required to log on to a website to view or download information, log on to a mail server to receive email, etc. 
     With the ubiquity of accessible digital information, people have come to expect uninterrupted service and seemingly instantaneous access speeds. In addition to technology advances contributing to increased communication speeds, anticipatory techniques may also play a significant role in advancing network communication speeds. For instance, pre-fetching and other anticipatory techniques can make rational assumptions as to what a user might request next. Such decisions may be made on various factors, such as what content the user is currently consuming, known user preferences, past user behavior and/or any number of other factors. 
     These and other techniques are often possible because the particular user involved in the communication of the information is known. For example, email messages and message list pages could be pre-fetched where the particular user requesting his/her email is known to the mail server or other mail transfer agent. A particular user&#39;s typical past behavior could prompt certain information to be transmitted to a holding storage for quick user access, based on a probability that the user will indeed soon request that information. Such techniques can make data and other information requests appear to be nearly instantaneous, even though back end and/or transmission delays are in fact taking place without the user&#39;s knowledge. 
     However, these and other techniques may be based on information that is associated with, or in some cases unique to, the user. Where the user&#39;s identity is not yet known, a session has not been established, etc., such techniques may not be available. For example, while a user is logging onto a web-based service, no session has yet been established, and the identity and/or attributes associated with the user are not yet known to the service. While authentication or other initial activities are occurring, the user can only endure the delay and wait until the procedure completes. Authentication requests and other initial communications may involve multiple exchanges of information. The number of hops and round trip times for such exchanges can result in an undesirable “time to glass” (TTG) experience for the user. 
     SUMMARY 
     Techniques involving migrating authenticated content on a network towards the consumer of the content. One representative technique includes a network node receiving an encrypted seed having at least a location of the user data at a network service that stores the user data, and a cryptographic key to access the user data. The seed is received in response to a user login attempt to the network service. The user data is requested from the location using at least the received cryptographic key. The method further includes receiving and storing the user data at the network node, where the network node is physically closer to a location of the user than is the location of the network service. If the user is successfully authenticated, user access is provided to the stored user data at the network node rather than from the network service. 
     In another particular implementation of such a technique, a system is provided that includes a first storage at a first location configured to store authentication-based content. A second storage at a second location is provided, where the second location is in closer physical proximity to a requestor of the authentication-based content than the first location. A processor at the second location is configured to securely request at least a portion of the authentication-based content from the first storage for storing in the second storage while the requestor attempts to log onto a service hosted at the first location. The processor is further configured to facilitate secure access to the authentication-based content from the second storage, such as by the requestor. 
     Another representative implementation involves a method, or computer-readable media having stored instructions that are executable by a processor to perform functions. The method involves receiving a user access request at a web-based email service, and in response, generating an encrypted seed including a user identifier, a storage location of the user&#39;s email data at the email service, and a cryptographic key to access the user&#39;s email data. The user is redirected to an authentication module which presents a login page and an image tag within the login page, where the image tag includes the encrypted seed and an address of an edge server of a content distribution network. A request is received from the edge server for a first portion of the user&#39;s email data identified by at least the cryptographic key. The requested first portion of the user&#39;s email data is directed to the edge server, and the first portion of the user&#39;s email data is allowed to be provided to the user from the edge server rather than from the email service. 
     This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1 A  is a representative networking environment illustrating a representative manner in which the techniques described herein may be implemented; 
         FIG.  1 B  depicts a more particular example of interactions that may be used to make user-specific information available nearer to a user to reduce delays and improve time-to-glass; 
         FIG.  2    illustrates a representative system-level example for reducing delays associated with obtaining user-specific information; 
         FIG.  3    illustrates a representative example for reducing delays associated with a login process of a web-based email program; 
         FIG.  4    is a flow diagram illustrating a representative method in which a network node can serve as a caching element to decrease latencies experienced by users during initial access to a network service; 
         FIG.  5    is a block diagram of a system for retrieving user data while the user is logging on to a service that provides the user data, and for caching the user data at a location from which the user can more quickly obtain it; 
         FIG.  6    is a flow diagram of one representative example of a manner of moving at least a portion of a user&#39;s email data to an edge server of a CDN that is geographically closer to the user than the email system is; and 
         FIG.  7    depicts a representative computing system in which principles described herein may be implemented. 
     
    
    
     DETAILED DESCRIPTION 
     In the following description, reference is made to the accompanying drawings that depict representative implementation examples. It is to be understood that other embodiments and implementations may be utilized, as structural and/or operational changes may be made without departing from the scope of the disclosure. 
     As noted above, network access delays can often be reduced by using pre-fetching or other anticipatory techniques. Such techniques involve reasonable assumptions as to what the user might request, and actions can be initiated to obtain the information that is likely to be requested by a user. However, such techniques are ineffective where the user&#39;s identity is not yet known, a session has not yet been established, or in connection with some other initial activity. For example, until a user has “logged on” or otherwise been authenticated in connection with an application or service, no authenticated content can be presented to the user, as the user has not yet been authorized to view it. Thus, while such authentication or other initial processes are taking place, the user may experience an undesirable delay until relevant content is presented. 
     The disclosure is generally directed to making authentication-based content at least temporarily available to the content consumer, or “user,” at a location physically closer to the user than where the content is normally stored. A network application/service can generate an encrypted token in response to a user&#39;s request to access the service. The token can be provided to the user directly, via a redirected authentication module, etc. Using the token, the user can make a request to a network node in closer proximity than the network service, where the request causes the closer network node to obtain at least the first presentable portion of the authentication-based content from the more distant network service. This transaction of requesting and providing the authentication-based content to the nearer network node may be done while the user is logging into the network service, thereby enabling transmission delays to occur at a time when the user would not otherwise expect to be presented with the content. When the user is ultimately authenticated, the first presentable portion of the authentication-based content that has been cached at the nearer network node can quickly be provided to the user. TTG is improved at least due to the parallel acquisition of the user data, and the closer proximity of the data when the user is eventually authenticated. 
     Referring now to  FIG.  1 A , a representative networking environment is described that illustrates a representative manner in which the techniques described herein may be implemented. In the illustrated example, a network-based application, service, or other network entity may have data distributed at various points on the network as depicted by data centers  100 A,  100 B,  100   n , etc. For purposes of example, these data centers  100 A,  100 B,  100   n  may include data storage entities associated with the network-based services. Other network entities such as data source node-A  102 A, data source node-B  102 B, data source node-n  102   n  may be associated with the same or different network than the data centers  100 A,  100 B,  100   n . In one example, the data source nodes  102 A,  102 B,  102   n  represent content storage entities that provide digital content by way of, for example, a content distribution network (CDN). In another example, at least the data source node-A  102 A is a third-party network node relative to the data centers  100 A,  100 B,  100   n , where data security measures taken at the data centers  100 A- 100   n  are not generally carried over to the data source nodes  102 A- 102   n.    
     A user  104  may interact with any one or more of the illustrated network entities. A representative technique described herein reduces the delay confronting the user  104  upon initial interaction with one or more of the network entities. For example, the initial interaction may be a login process, where the user enters user-specific credentials in order to gain access to network services, data, etc. 
     In a more particular example, it is assumed that the user  104  has initiated a login process as depicted by interaction line  106 . Embodiments described herein set forth manners in which the time-to-glass (TTG) from the user&#39;s login initiation is reduced by caching or otherwise storing user-related information at a network entity closer to the user than its original storage location. For example, when the user  104  initiates the login depicted on line  106 , the user  104  might enter an email address and/or user identifier (user ID), password, etc. Once submitted by the user  104 , the user typically waits until the credentials have been authenticated, and the application/service is ultimately presented to the user  104 . In accordance with the techniques described herein, the user&#39;s wait time is reduced by storing a first page(s) of the application/service being accessed in a node physically closer to the user  104 , so that it is more quickly presented to the user  104  when the login process has been completed. 
     Thus, content or data that is typically private to the user can be retrieved from a storage area while the user is logging in or otherwise occupied in an initial interaction. During these parallel actions, the content may be moved to a location geographically closer to the user, in anticipation of the login process culminating in the user&#39;s successful authentication. It should be noted that unless otherwise noted, references to events occurring “in parallel,” “contemporaneously,” or the like do not suggest that such events overlap in time precisely, but rather than they overlap to at least some degree. 
     In the example of  FIG.  1 A , a user data caching operation is initiated when the user  104  has initiated the login process as depicted by interaction line  106 . The user data caching operation is depicted by the dashed line  108 , where user-identifying information is securely provided to the data center-B  100 B in this example. The user-identifying information is used to identify user-specific information stored at the data center-B  100 B, such as initial web content that may be presented to the user  104  when the login procedure is complete. Such user-specific information may be provided from the more distant data center-B  100 B to a data source node-A  102 A or other node accessible to the data center-B  100 B. When the user  104  has completed the login as depicted by interaction line  110 , the user-specific information can be more quickly provided to the user  104 , at least in part to its closer proximity at data source node-A  102 A. 
       FIG.  1 B  depicts a more particular example of interactions that might be used to make user-specific information available nearer to a user to reduce delays and improve TTG. This example involves items referenced in  FIG.  1 A , and thus uses like reference numbers where appropriate. In this example, it is assumed that the user  104  accesses a website or other network node to interact with the data center-A  100 A, as shown by line A. In manners described in more particular embodiments below, a browser (not shown) associated with the user  104  ultimately provides secure information to a node nearer to the user  104  than the data center-B  100 B where user-specific information is stored. The data source node-A  102 A represents such a “nearer node” relative to the user  104 , and dashed line B represents the transfer of the secure information. 
     Using this secure information depicted by dashed line B, the node-A  102 A makes a request for the user-specific information stored at the data center-B  100 B, as depicted by dashed line C. The user-specific information is provided from data center-B  100 B to the data source node-A  102 A to be at least temporarily stored. If the user&#39;s login is ultimately successful, the data center-A  100 A (which may include or be associated with an authentication node) can generate a page(s) for the user  104  as depicted by line E, thereby causing the user&#39;s  104  browser to access the temporarily stored information at data source node-A  102 A, as depicted by lines F and G. 
     Thus, among other things, the techniques described herein enable authenticated content specific to at least one user to be pushed towards the edge of the network from a more distant data center. For example, authentication or “login” procedures may be accelerated by pushing the authenticated data closer to the user. In one embodiment, the data is pushed to servers that do not normally store data that involves authentication in order to obtain it. For example, the authenticated content may represent content that would not otherwise be distributed to any general requestor, such as the first page of web content that would be presented to the user when the user&#39;s credentials have been authenticated. In a more particular example, the authenticated content may be the first page of a user&#39;s home page, web-based email inbox, etc. In one embodiment, the authenticated content is acquired and at least temporarily stored at a secondary server(s), such as an edge server or other intermediary server, that is closer to the client device than it would otherwise be stored. The authenticated content may be obtained for caching/storing at the nearer server while the user is presented with a manner of entering authentication credentials. In this manner, the overlap in time between caching the authenticated content and entering the user&#39;s credentials is time saved in the overall login process. More particularly, when the user has completed entering his/her credentials, the authenticated content need not be obtained from a distant node, but rather will be readily available at a node nearer to the user, such as a CDN edge server. 
       FIG.  2    illustrates another representative example for reducing delays associated with obtaining user-specific information. In the example of  FIG.  2   , the service provided via the network is assumed to be an Internet-based electronic mail (email) service, where the TTG is reduced when the user logs on to access his/her email. 
     In the example of  FIG.  2   , a number of representative apparatuses or devices  202  are depicted that a user might use to access email and/or other network services. The devices  202  are illustrated for purposes of example, and does not represent an exhaustive list. The techniques described herein are applicable to any device that may communicate with or otherwise access services and/or data via one or more networks. The devices  202  may be stand-alone computing devices, portable computing and/or communication devices, devices embedded into other products such as appliances or automobiles, etc. The representative devices  202  include a desktop computer  202 - 1 , portable computer (e.g. laptop)  202 - 2 , mobile phone  202 - 3 , personal digital assistant  202 - 4 , or other  202 - 5  device capable of communicating via a network(s). Where at least one network service utilized by the device  202  is email, the device  202  may include software such as a browser  204  to access web-based mail, a local email client  206 , etc. 
     The representative embodiment of  FIG.  2    includes one or more data centers  208 ,  210 ,  212  that are available via the network  214 . The data centers  208 ,  210 ,  212  may be geographically distributed around serviced portions of the globe. In one embodiment, data centers include clusters, such as the clusters  216  shown at data center  208 . Email and/or other data for the user of the device  202  may be stored at a particular cluster  216  and data center  208 . Thus, when a user accesses a uniform resource locator (URL) or other address to reach a web-based email application  215 , the user may be interacting with that particular data center  208 . 
     When the user is directed to the email application  215 , the user&#39;s browser  204  is, in one embodiment, redirected to an authentication module  217  that may be associated with the data center  208  or separate therefrom. The authentication module  217  facilitates user entry of user credentials, such as an email address and/or username, password, etc. When that information is verified by the authentication module  217 , the browser  204  may be redirected back to the email application  215 . In accordance with techniques described herein, web content, such as a screen showing the user&#39;s email inbox that will be presented to the device  202 , is cached at a network entity geographically closer to the device  202  than the data center  208  from which the web content/data is served. The content can be obtained and moved to the closer network entity, such as the edge server  218 , when the user&#39;s credentials are being entered and/or verified. 
     For example, the network  214  may include a content distribution network (CDN) that includes one or more edge servers  218 ,  220 , and in some cases one or more additional intermediate servers  222 ,  224 ,  226  that may be associated with any part of the email system, CDN and/or other system. The user of the device  202  may point the browser  204  to the service provided by the email application  215 , and begin the login process. During this time, user-specific data may be moved from the appropriate cluster  216  at the data center  208  to a network node closer to the device  202 , such as the CDN edge server  218 . While the CDN edge server  218  may generally be used to store content not requiring authentication such as general images, javascript code, cascading style sheets (CSS), etc., techniques described herein exploit the proximity of the edge server  218  to securely cache authentication-based, user-specific data. By utilizing appropriate security measures, the user-specific data may be cached at the edge server  218  with protection against unauthorized access. 
     In one embodiment, the user-specific data includes the first page of the email service that will be presented to the user, such as the user&#39;s personal email inbox. A first page to be presented on a user&#39;s device  202  will differ from user to user, as the email inbox or other content will generally be unique to each user. When the user&#39;s credentials have been verified, the browser  204  can obtain, or be instructed to obtain, the cached user-specific content from the physically proximate edge server  218 . The email content may be presented via the browser  204 , managed by a mail server  230  and presented via a local email client  206 , etc. By caching the user-specific content physically closer to the device  202 , the time expended to present the first page of the requested content can be reduced. Manners of securing the user-specific data to enable a faster TTG while maintaining user privacy are described below. 
       FIG.  3    illustrates a representative example for reducing delays associated with a login process of a web-based email program. In the illustrated embodiment, it is assumed that an email system  300  is distributed among one or more data centers  302 . While various implementations are possible in connection with the techniques described herein, the illustrated embodiment involves a plurality of clusters  304 ,  306  through  308 , each of which hosts multiple users, and in many cases a large number of users. Each cluster, such as cluster  308 , may represent a self-contained set of servers including one or more backend servers  310 ,  312  and one or more frontend servers  314 ,  316 . The frontend servers  314 ,  316  interface to the external devices such as client device  350 , and may perform functions such as formatting pages, checking for viruses, etc. The frontend servers  314 ,  316  may include front door (FD) servers  318 ,  320  that can engage in the first contact with client devices  350  that utilize the email system  300 . The FD servers  318 ,  320  can make requests to the backend servers  310 ,  312  on behalf of the client devices  350 . 
     Among other things, the backend servers  310 ,  312  may provide databases and/or other storage  322  to store user data, including users&#39; email  324  and other user-specific content. In one embodiment, the user-specific content stored in storage  322  at any of the one or more data centers  302  includes one or more web pages that will be presented to the user upon successful login, such as a home page of the email service, an inbox of the email service, etc. It should be noted that the particular distribution of duties between the representative frontend servers  318 ,  320  and backend servers  310 ,  312  is described for purposes of illustration only, as the techniques described herein are applicable regardless of the distribution of duties between a plurality of servers, or whether there are multiple servers at all. 
     As noted above, the example of  FIG.  3    is described in the context of an email system  300 . In this embodiment, it is assumed that the client device  350  as previously communicated with the email system  300 , and at least one cookie  352  is stored at the client device  350 . The cookie  352  may be, for example, data identifying the user, and suggesting where the users data resides. For example, the location cookie  352  may be stored at the client device  350  that includes data identifying which cluster  304 ,  306 ,  308 , etc. and perhaps which data center  302  the user&#39;s email data resides. 
     As described in greater detail below, such a location cookie  352  can provide information sufficiently identifying the user such that an encrypted token or “seed” can be generated for that user. A location cookie  352  is not required in connection with the techniques described herein, as other identifying information may be used. For example, an email address may sufficiently identify the user to initiate retrieval and nearer caching of user-specific content. However, the use of a cookie  352  or other stored information may enable the creation of the seed and ultimate caching of the user-specific content sooner than if a user first submits an email address or other identifying information. It should also be noted that in one embodiment, the use of a location cookie  352  that stores at least a location (e.g. cluster  304 ,  306 ,  308 , etc.) of the user&#39;s email data assumes the user&#39;s data remains in the same cluster, or at least has not changed since the last email access. In this manner, the location cookie  352  can quickly provide the location in which the user&#39;s email data is known to be stored. 
     In other embodiments, other information identifying a user can then be used to identify the location of the user&#39;s data, which in some cases may involve an extra step of locating the user&#39;s personal email data. Various embodiments involve various levels of detail of user identification information and/or user data location information, any of which is feasible in connection with the description herein, although in some cases the exact location of the user data may be located with the assistance of other identifying information rather by way of direct location information (e.g. a cluster address). Thus, while the embodiment of  FIG.  3    is described in connection with a location cookie  352  that identifies the user as well as a location of the user&#39;s stored email data and other user-specific content, other identifying information may alternatively be used without departing from the techniques described herein. 
     In one embodiment, the seed  358 A generated at the data center  302  in response to the location cookie  352 , or other user identification information, represents a preauthorization bundle in the form of an encrypted token. This encrypted token or “seed” may include information such as a value that uniquely identifies the respective user to the email system  300  and authentication module  356 , which may be referred to herein as a client identifier (CID). As previously noted, the seed may also include the location of the user&#39;s email and related data, such as the user&#39;s email cluster name, address or other cluster identifier. In one embodiment, a cryptographically safe random number is also provided as part of the seed, which may be referred to herein as a preauthorization key, or seed-GUID (globally unique identifier). The seed-GUID may be used as a key to access the appropriate data for the user identified by the CID at the identified cluster, such as the user&#39;s email inbox. 
     More particularly, the client device  350  may provide a location cookie  352  or other user-identifying information to the email system  300 . In one embodiment, the location cookie  352  is in the form of a user identification cookie (UIC) that includes at least an identification of the user and a location of the user&#39;s data cluster. The location cookie  352  may be encrypted. A front door server  320  receives the location cookie  352 , and in one embodiment responds with a redirect message  354  to an authentication module  356 , as well as the seed  358 A generated from the user information in the location cookie  352 . In this example, the seed  358 A represents the encrypted structure including at least the cluster, seed-GUID, and CID, which are referred to herein as a triplet. 
     The client device&#39;s  350  browser follows the redirect message  354  link to the authentication module  356  which in response provides a login page  360 . The seed  358 B may be provided to the authentication module  356  for subsequent use. In accordance with one embodiment, the login page  360  includes, among other things, a content tag such as an image tag. The content tag is provided as part of the custom content rendered for the email system  300  by the authentication module  356  on the login page  360 . An example of such an image tag is shown below:
         &lt;img src=https://CDN.emailname.com/clear.gif?s=&lt;encrypted&gt;”/&gt;       

     Example 1 
     where “CDN” in this example represents a content distribution network edge server  390 , CDN.emailname.com thus represents a CDN edge server  390  that collaborates with the mail system (emailname.com)  300 . 
     As a result, during the time that the user of the client device  350  may be typing in his/her credentials, the client device&#39;s  350  browser may make a content request  362  to this URL of the edge server  390  in parallel. The content request  362  points to edge server  390 , which triggers the call to start caching the user-specific data. It should be noted that the edge server  390  may be any network node physically closer to the client device  350  that can collaborate with the email system  300 . In the illustrated embodiment, this network node is represented by a CDN edge server  390 , although it need not be. In one embodiment, however, the network node to which user-specific content is cached is a network node that might not otherwise involve authentication requirements to receive content. 
     Using the URL of Example 1 above, the client device&#39;s  350  browser would make a content request  362  for an image tag at CDN.emailname.com with the encrypted seed. As is described in greater detail below, the content request  362  serves as a manner of providing the encrypted seed to the edge server  390 , so that it can in turn obtain and cache the user-specific content (e.g. first web page of email service). 
     It should be noted that the login page  360  may include scripting language or other programming, rather than an image or other content tag, to trigger a request to the edge server  390 . The use of image tags and other content tags represents one manner of assisting with the storing of the content on an edge server  390  or other intermediary node. However, analogous results may be obtained using other tags, or script, etc. For example, the use of a content tag could be replaced with an AJAX call (Asynchronous JAVASCRIPT™ and XML). In one embodiment such a call may also allow a larger quantity of authentication information to be posted if desired, as some image URLs may be implemented with request methods that are character-limited. User content  368 B may, therefore, be pre-cached or otherwise stored on an edge server  390  by passing the encrypted seed and other related information using, for example, an IMG, IFRAME, SCRIPT or other similar HTML tags or other programming tags, or by using script with a device such as the XML HTTP request, etc. These and other analogous manners of passing the information may be used, and those described herein are provided for purposes of illustration. 
     It should be noted that the actual image, content or other data allegedly requested by the content request is not relevant. In one embodiment, the request for content is a guise to facilitate a client-initiated request by the edge server  390  to the appropriate cluster  308  to obtain the user-specific information, such as the user&#39;s first web page presented by the email system  300 . In a more particular example assuming an image request, an imperceivable image may be obtained in response to the request, such as a one pixel by one pixel image that is transparent and/or too small to see. Alternatively, the image or other content request may return a perceivable image, sound, etc. However, in one embodiment, the image request is not actually seeking the resulting image, but rather using the image tag as a vehicle for providing the encrypted seed to the edge server  390  that will collaborate with the email system  300  to cache at least some of the user&#39;s authenticated information. This information caching occurs while the user is entering login credentials, thereby enabling faster presentation of the first page of the email service since it is cached physically closer to the client device  350 . 
     To facilitate decryption of the seed and/or other information involving encrypted information, a digital certificate for the domain created for the edge server  390 , such as CDN.emailname.com, is shared with the edge server  390  and/or the CDN to which the edge server  390  is associated. Additionally, the email system  300 , authentication module  356  and CDN edge server  390  share a key referred to herein as the seed-key that is used to encrypt at least the seed. The seed-key may be, for example, a symmetric key. Alternatively, the seed-key may be a private key corresponding to the digital certificate. Other manners of encrypting the seed may be utilized. 
     When the edge server  390  receives the content request  362 , it may decrypt the encrypted seed at the decryption module  392  using the seed-key that was previously shared with it. The edge server  390  will therefore have access to the cluster, seed-GUID and CID, and may post the seed-GUID  366  to the cluster provided in the decrypted seed (e.g. https://clustername.emailname.com/). The front end server  316  of the email system  300  provides the seed-GUID  366  to the backend server  312  to obtain the user-specific content from the storage  322 . For example, the stored information may be the inbox page or other “home” content per user preference for the user&#39;s email. The email system  300  releases or otherwise provides this user-specific content  368 A to the edge server  390  where it is at least temporarily stored until the user has successfully logged onto the email system  300  by way of the authentication module  356 . 
     In one embodiment, the user content  368 B stored at the edge server  390  has an expiration time. In response to receiving the content request  362 , or in response to receiving the user content  368 B, or any time therebetween, the edge server  390  can provide a response  370  to the original content request  362 . As noted above, the response may be a small, substantially imperceivable image or other content that is not itself made use of at the client device  350 . In one embodiment, the response  370  may be a small image sent asynchronously in parallel during the time the seed is decrypted at the decryption module  392  and during receipt of the user content  368 B. At this point, the user content  368 B is cached at the edge server  390 , awaiting a successful login by the user, at which time the user content  368 B may be provided to the client device  350 . 
     At some point, the user finishes typing in his/her credentials via the login page  360  presented on the client device  350 . The authentication module  356  provides an authentication comparison module  372  to compare the user&#39;s login credentials to stored login information. Upon successful authentication, the decryption module  374  decrypts the seed to get the user&#39;s cluster, seed-GUID and CID. The user comparison module  376  compares the decrypted CID to the credentialed user. If there is a match, the authentication module  356  generates a page  378 . The page  378  may include scripting language (e.g. JAVASCRIPT™) or other code that causes the browser at the client device  350  to post the seed-GUID  372  to the location of the cached user content  368 B at the nearer edge server  390 . 
     In response to the request from the user device  350  associated with providing the seed-GUID  372 , the edge server  390  serves the user content  368 B that it cached earlier, as depicted by the user content  368 C being provided to the client device  350 . If the content is not found or has expired, the edge server  390  can simply pass through the post to the email system  300  for default processing. 
     In this manner, the user can receive user content  368 C more quickly upon successfully logging into the email system  300  (or other network-based service). The user content represents user-specific content that, in one embodiment, is distributed only in response to the transfer of the preauthorization bundle or “seed” to enable the various entities to manage the caching of the user content. 
     The techniques described herein may be extended to multiple users of the client device  350  by making the seed be a list of triplets rather than a single item. For example, for two users, the seed may be a list of two triplets, each including the cluster, seed-GUID, and CID of the respective user of the client device  350 . In such case, the logic where the user-specific information is cached (e.g. edge server  390 ) may perform the decrypting of the content request  362  and caching of the user content  368 B for each of the triplets inside the seed. Further, the authentication module  356  can select the triplet from the decrypted seed that matches the CID value of the currently authenticating user. 
     The particular embodiment of  FIG.  3    is presented for purposes of illustration, as the techniques described herein may be utilized in a variety of other contexts. For example, the techniques may be provided in connection with any network application/service, and any collaborative network node that may serve as an intermediary node between the user device and the network service.  FIG.  4    is a flow diagram illustrating a representative method in which a network node can serve as a caching element to decrease latencies experienced by users during initial access to a network service. At block  400 , a network node receives an encrypted seed that includes a location of the user data at the network service that stores the user data, as well as a cryptographic key that enables access to the user data. In one embodiment, the network node receives at least the encrypted seed in response to the user&#39;s login attempt to the network service. 
     As shown at block  402 , the network node may request user&#39;s data location provided in the encrypted seed using at least the received cryptographic key. In response, block  404  shows that the network node can receive and store the user data that is normally stored at the network service, where this network node is located physically closer to the user than is the location of the network service. At block  406 , user access is enabled to the stored user data at the network node rather than from the network service, in response to successful authentication of the user resulting from the user login attempt. 
     Similarly,  FIG.  5    is a block diagram of a system for retrieving user data while the user is logging on to a service that provides the user data, and for caching the user data at a location from which the user can more quickly obtain it. This embodiment illustrates a first storage  502  at a first location  500 . The first location  500  may host, for example, an email service or other web-based service  504 . The first storage  502  is configured to store authentication-based content  510 A, such as a user email inbox or other user sensitive data. The first location  500  may include a processor(s) and/or other circuitry to perform the processing for the service  504 , authentication  508  and/or other processes carried out of the first location  500 . 
     A second storage  522  at a second location  520  is provided that is an closer physical proximity to a requestor  530  of the authentication-based content  510 A than is the first location  500 . The second location  520  may represent a node accessible on the network  540  that is capable of communicating with both the first location  500  and the requestor  530 . In one embodiment, the processor  524  at the second location  520  is configured to securely request at least a portion of the authentication-based content  510 A from the first storage  502  for storing in the second storage  522  while the requestor  530  attempts to log into the service  504  hosted at the first location  500 . The login process may be performed by the processor  506  and/or the authentication module  508 , which may or may not be located at the first location  500 . The processor  524  is also configured to facilitate secure access to the authentication-based content  510 B from the second storage  522 . 
       FIG.  6    is a flow diagram of one representative example of a manner of moving at least a portion of a user&#39;s email data to an edge server of a CDN that is geographically closer to the user than the email system is. In the illustrated example, the user enters a URL or other address of the email system  600 . For example, the user could enter “emailname.com” into the address bar of his/her browser. In one embodiment, the email system front door reads a cookie, referred to herein as a user identification cookie (UIC), as shown at block  602 . The UIC includes at least an identification of the user and where the users data is stored. Additionally, the email system issues a redirect to a login server, also depicted at block  602 . An example of such a redirect is depicted in Example 2 below:
         loginserver.com?wreply=https://CDN.emailname.com/ . . . &amp;s=&lt;encrypted&gt;       

     Example 2 
     In Example 2, the “s” stands for “seed” and is the encrypted structure containing at least the data cluster name, seed-GUID and CID. As shown at block  604 , the user&#39;s browser follows the redirect to a login page. By way of this login page, the user can enter his/her credentials as shown at block  606 . Such credentials may include, for example, email address and/or username, password, etc. while the user is entering such credentials, other actions are taken into obtain a portion of the user&#39;s data and cache that data at a CDN edge server closer to the user. In one embodiment, this is initiated from the login page that includes an image tag as shown at block  608 . In one example, the image tag may have a source as part of the custom content currently rendered for the email system by the authentication module on the login page. Such an example was shown in Example 1 above. As a result, while the user is typing his/her credentials at block  606 , the browser makes the request to the URL of Example 1 in parallel. 
     As shown at block  610 , the CDN receives the image request, and decrypts the seed using the seed-key. Block  612  shows that the CDN posts the seed-GUID to the particular cluster identified in the seed, such as that shown in example 3 below:
         https://cluster.emailname.com/       

     Example 3 
     At block  614 , the email system response to the CDN with the first page of the user&#39;s inbox, home content, or other first page by default, user preference, etc. Further, block  614  shows that the CDN stores this content at a CDN edge server or other server closer to the user than the email system is. The CDN does not yet forward the content to the user, as the user is still authenticating. In one embodiment, the content may have an expiration time, such as one minute, five minutes, etc., although other embodiments do not include such an expiration time. 
     As noted at block  610 , the CDN received an image request which served as a vehicle for the user to reach the CDN and provide the seed. At block  616 , the CDN may return an image as a response to this image request. In one embodiment, the image is not actually sought, and thus the requested image is a “dummy” image that is not used by the browser when the image is returned to it. This is shown at block  616 . For example, the requested image may be a very small and/or transparent image that will have little or no impact on the user&#39;s browser display. 
     At some point, the user finishes entering his/her credentials, and submits them as depicted at block  618 . As shown at block  620 , the login module authenticates the user, and decrypts the seed to get the user&#39;s cluster, seed-GUID, and CID. If the CID does not match the credentialed user is determined at block  622 , the user is not authorized as shown at block  624 . On the other hand, if the CID matches the credentialed user as determined at block  622 , block  626  shows that the login module can generate a page with, for example, script language that causes the browser to post the seed-GUID to the CDN edge server (at, for example, https://CDN.emailname.com/). The CDN receives that post from the user to serve the content (e.g. inbox, home page, etc.) that the CDN had cached earlier, as shown at block  628 . If the content has expired or is not found, the CDN may pass the post through to the email system for normal handling. 
     In one embodiment, the security of the scheme involves serving the email data over secure sockets layer (SSL) so that the seed-GUID never travels in the clear. Further, the scheme can be extended to multiple users by making the seed into a list of triplets (cluster, seed-GUID, CID) rather than a single triplet. 
       FIG.  7    depicts a representative computing device/system  700  in which principles described herein may be implemented. The representative computing system  700  can represent any of the computing/communication devices described herein, such as, for example, an email server, authentication server, edge server or other intermediary network node, user device, etc., with representative differences noted below. The computing environment described in connection with  FIG.  7    is described for purposes of example, as the structural and operational disclosure for migrating user-specific content towards the content consumer is applicable in any environment in which user content may be communicated. It should also be noted that the computing arrangement of  FIG.  7    may, in some embodiments, be distributed across multiple devices. 
     For both client devices and servers, the representative computing system  700  may include a processor  702  coupled to numerous modules via a system bus  704 . The depicted system bus  704  represents any type of bus structure(s) that may be directly or indirectly coupled to the various components and modules of the computing environment. A read only memory (ROM)  706  may be provided to store firmware used by the processor  702 . The ROM  706  represents any type of read-only memory, such as programmable ROM (PROM), erasable PROM (EPROM), or the like. 
     The host or system bus  704  may be coupled to a memory controller  714 , which in turn is coupled to the memory  712  via a memory bus  716 . The operational modules associated with the principles described herein may be stored in and/or utilize any storage, including volatile storage such as memory  712 , as well as non-volatile storage devices.  FIG.  7    illustrates various other representative storage devices in which applications, modules, data and other information may be temporarily or permanently stored. For example, the system bus may be coupled to an internal storage interface  730 , which can be coupled to a drive(s)  732  such as a hard drive. Storage  734  is associated with or otherwise operable with the drives. Examples of such storage include hard disks and other magnetic or optical media, flash memory and other solid-state devices, etc. The internal storage interface  730  may utilize any type of volatile or non-volatile storage. 
     Similarly, an interface  736  for removable media may also be coupled to the bus  704 . Drives  738  may be coupled to the removable storage interface  736  to accept and act on removable storage  740  such as, for example, floppy disks, optical disks, memory cards, flash memory, external hard disks, etc. In some cases, a host adaptor  742  may be provided to access external storage  744 . For example, the host adaptor  742  may interface with external storage devices via small computer system interface (SCSI), Fibre Channel, serial advanced technology attachment (SATA) or eSATA, and/or other analogous interfaces capable of connecting to external storage  744 . By way of a network interface  746 , still other remote storage may be accessible to the computing system  700 . For example, wired and wireless transceivers associated with the network interface  746  enable communications with storage devices  748  through one or more networks  750 . Storage devices  748  may represent discrete storage devices, or storage associated with another computing system, server, etc. Communications with remote storage devices and systems may be accomplished via wired local area networks (LANs), wireless LANs, and/or larger networks including global area networks (GANs) such as the Internet. 
     User devices, network services, authentication servers, edge servers and other intermediary network nodes can communicate information as described herein. Communications between user devices and server devices can be effected by direct wiring, peer-to-peer networks, local infrastructure-based networks (e.g., wired and/or wireless local area networks), off-site networks such as metropolitan area networks and other wide area networks, global area networks, etc. A transmitter  752  and receiver  754  are shown in  FIG.  7    to depict the representative computing system&#39;s structural ability to transmit and/or receive data in any of these or other communication methodologies. The transmitter  752  and/or receiver  754  devices may be stand-alone components, may be integrated as a transceiver(s), may be integrated into or already-existing part of other communication devices such as the network interface  746 , etc. 
     As computing system  700  can be implemented at a user device, email server, authentication server, edge server, etc., block  756  represents the other devices/servers that communicate with the communicating system  700  when it represents one of the devices/servers. In addition to operating systems and other software/firmware that may be implemented in each of the user devices, email servers, authentication servers, edge servers, etc., each may include software modules operable by the processor  702  executing instructions. Some representative modules for each of a number of representative devices/servers are described below. 
     When the computing system  700  represents a user or client device, the client device storage/memory  760  represents what may be stored in memory  712 , storage  734 ,  740 ,  744 ,  748 , and/or other data retention devices of a client device such as a computer, smartphone, laptop computer, etc. The representative client device storage/memory  760  may include an operating system (not shown), and processor-implemented functions represented by functional modules. For example, a browser  762  and/or email client  764  may be provided. Data  766  may also be stored, such as the UIC  768 , seed-key  770 , etc. 
     Where the representative computing system  700  represents an edge server or other intermediary server as described herein, the memory  712  and/or storage  734 ,  740 ,  744 ,  748  may be used to store programs and data used in connection with the server&#39;s functional operations previously described. The server storage/memory  772  represents what may be stored in memory  712 , storage  734 ,  740 ,  744 ,  748 , databases, and/or other data retention devices. The representative server storage/memory  772  may include an operating system (not shown), a decryption module  774 , data  776  such as the cached user content  778  and seed-key  780 , etc. 
     Where the representative computing system  700  represents an email server or other network service as described herein, the memory  712  and/or storage  734 ,  740 ,  744 ,  748  may be used to store programs and data used in connection with the server&#39;s functional operations previously described. The server storage/memory  782  represents what may be stored in memory  712 , storage  734 ,  740 ,  744 ,  748 , databases, and/or other data retention devices. The representative server storage/memory  782  may include, for example, an operating system (not shown), an email application  784 , seed generation module  786 , as well as data  787  such as the stored user content  788 , seed-key  789 , etc. 
     Where the representative computing system  700  represents an authentication server as described herein, the memory  712  and/or storage  734 ,  740 ,  744 ,  748  may be used to store programs and data used in connection with the server&#39;s functional operations previously described. The server storage/memory  782  represents what may be stored in memory  712 , storage  734 ,  740 ,  744 ,  748 , databases, and/or other data retention devices. The representative server storage/memory  790  may include, for example, an operating system (not shown), and modules described in connection with  FIG.  3    such as an authentication comparison module  792 , user comparison module  794 , decryption module  796 , data  798 , etc. 
     As previously noted, the representative computing system  700  in  FIG.  7    is provided for purposes of example, as any computing device having processing and communication capabilities can carry out the functions described herein using the teachings described herein. It should also be noted that the sequence of various functions in the flow diagrams or other diagrams depicted herein need not be in the representative order that is depicted unless otherwise noted. 
     As demonstrated in the foregoing examples, methods are described that can be executed on a computing device, such as by providing software modules that are executable via a processor (which includes a physical processor and/or logical processor, controller, etc.). The methods may also be stored on computer-readable media or other storage that can be accessed and read by the processor and/or circuitry that prepares the information for processing via the processor. For example, the computer-readable media may include any digital storage technology, including memory  712 , storage  734 ,  740 ,  744 ,  748 , any other volatile or non-volatile digital storage, etc. Having instructions stored on a computer-readable media as described herein is distinguishable from having instructions propagated or transmitted, as the propagation transfers the instructions, versus stores the instructions such as can occur with a computer-readable medium having instructions stored thereon. Therefore, unless otherwise noted, references to computer-readable media/medium having instructions stored thereon, in this or an analogous form, references tangible media on which data may be stored or retained. 
     Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as representative forms of implementing the claims.