CDN

How can we improve Azure CDN?

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  1. Fallback to custom URL when content not found

    Would be good if MS could provide fallback to custom URLs when content is not found on CDN

    124 votes
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      under review  ·  2 comments  ·  Flag idea as inappropriate…  ·  Admin →
    • Prevent Azure CDN Bandwidth abuse

      Hello,
      I have already made a couple of posts in regards to this issue on StackOverflow: http://stackoverflow.com/questions/35488753/how-to-prevent-azure-cdn-bandwidth-abuse-by-malicious-bandwidth-vampire-requests and on MSDN CDN forum: https://social.msdn.microsoft.com/Forums/azure/en-US/9e37ca24-b38d-4193-847b-f679eab76aa5/azure-cdn-bandwidth-abuse-by-malicious-bandwidth-vampire-requests?forum=azurecdn but so far, unfortunately, no good solutions to the problem were offered. So I thought it would be a good idea to post this idea here as well, and get a little more into detail on how to solve the issue since this little fix can easily be integrated into the upcoming WAF offering with the Premium SKU.

      Problem:
      To summarize, the problem can simply be stated as follows: Any large multimedia content file such as an…

      71 votes
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        under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
      • 64 votes
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          under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
        • CDN image auto image crop and resizer functionality for images

          It would be really good, if the CDN could handle query strings and for the file format of images, handle resizing and cropping parameters automatically to resize our content needs... This done by the Azure CDN by its own.

          45 votes
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            under review  ·  5 comments  ·  Flag idea as inappropriate…  ·  Admin →
          • Support the proper use of webfonts on Azure Websites using Azure CDN

            We need an easy way of setting the http protocol "access-control-allow-origin" on webfonts used on Azure Websites and distributed via the Azure CDN. Please make the CDN service respect http-protocol settings in the web.config file on Azure Websites.

            39 votes
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              under review  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
            • wildcard ssl / domain / url support for Azure CDN

              Allow a wildcard domain like *.mydomain.com and wildcard SSL for such a domain as well. This will allow support for dynamic domain creating like multi tenant systems which might use that

              39 votes
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                under review  ·  3 comments  ·  Flag idea as inappropriate…  ·  Admin →
              • Ability to provide custom error response for HTTP errors e.g. 404's

                Ability when 404 is returned by ones origin to have the CDN respond with a preconfigured URL i.e. custom response page.

                35 votes
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                  under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                • Custom rules for WAF

                  Allow user created rules for WAF.

                  35 votes
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                    under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                  • Support WebApp deployment slots for Endpoints

                    In the Azure Portal, when configuring an Endpoint for a CDN resource, you can select WebApp. It gives you a nice list of WebApps you have access too. The problem is, if those WebApps are using Deployment Slots for staging (Dev, Test, Prod); you can't add an Endpoint for anything other than the production slot.

                    We would like to have a mirrored setup where our WebApp Dev slot is accessible through the CDN.

                    The work around is to add a custom origin, which works--but seems like the WebApp feature could be more robust.

                    Thanks!

                    34 votes
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                      under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                    • Make CDN caching optimized for Smooth Streaming

                      With Smooth Streaming, because of the latency and low bandwidth during the first access of the video (before it is cached by CDN), Smooth Streaming will choose a low bitrate stream, and the higher bitrate streams may never be cached at the CDN edge server because they are never accessed; or if we are lucky it requires at least many replays of the video before all streams are cached. This is a huge problem with videos not frequently accessed.

                      Therefore it should be possible to force a container to cache all blobs within it as soon as one of its…

                      31 votes
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                        under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                      • 17 votes
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                          under review  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                        • Allow a CDN to be a linked resource

                          We want the ability to see CDNs which are related to a particular property as well prevent accidental deletion if linked.

                          8 votes
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                            1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                          • Purging via CNAME

                            Currently purging is just supported by specifying the CDN endpoint. For case where a rewrite rules is used to direct customers to different content based on the CNAME (e.g. by selecting content to return based on host name) it is valuable to have the ability to purge content based on CNAME. Without this capability one needs to create individual CDN endpoints to use for each CNAME that has different content returned based on the CNAME.

                            8 votes
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                              under review  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                            • Dashboard with CDN Information

                              1. The current CDN portal provides the required information, but it would be good to have something in the form of an Dashboard, which can provide an complete view of the performance and utilization.

                              2. Region/Country wise cache status and the hit and miss ration is good to have to understand the traffic and to be aware of the performance from the different regions.

                              7 votes
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                                under review  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                              • Provide access control feature

                                I'm looking to use Azure CDN to replace a password-protected FTP area. The lack of access control is preventing me using the CDN.

                                7 votes
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                                  under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                                • Provide Access to CDN Storage

                                  Currently there seems to be no way to access the storage the CDN is using.

                                  I would like to use Function App with a NodeJS Blob Trigger to minify any CSS and JS files that land up on the CDN Storage.

                                  Another scenario is to jslint & css lint any js and css files that gets stored in CDN storage and send notifications if there's anything that won't lint.

                                  Yet another scenario is to use a blob trigger blobs and optimize any images that gets stored.

                                  6 votes
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                                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →

                                    There currently isn’t any way to access storage that is used by the CDN for caching purposes. Content is never permanently stored in the CDN cache. By default content is stored for a max of 7 days. Longer or shorter times for this TTL can also be specified. However, in all cases this is just a max value and content can be removed from the CDN’s cache if it isn’t being actively accessed.

                                    Long term we are investigating the ability to have the CDN automatically optimized images and reduce the size of content (e.g. minify files) before they are delivered to clients.

                                  • Alerts triggered from a URL RegEx

                                    It would be great if we could register alerts to trigger from a URL hit or number of hits / second.

                                    3 votes
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                                      under review  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                                    • 3 votes
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                                        under review  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Support HSTS and HPKP

                                        Allow HSTS and HPKP to be enabled on Azure CDN

                                        Currently these values can only be passed through from the origin, which is fine for HSTS but can cause issues for HPKP (as the CDN cert may change, and probably doesn't match the origin cert)

                                        3 votes
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                                          1 comment  ·  Flag idea as inappropriate…  ·  Admin →

                                          How do you want HSTS to be enabled on the CDN? HSTS can be enabled on Azure CDN from Verizon Premium by using the rules engine to add the “Strict-Transports-Security” response header. Support for HPKP would likely require customers to provide their own HTTPS certificates. Once support for providing your own certificates is available the rules engine could be used to enabled HPKP support.

                                        • Signed cookie in CDN

                                          Enable authenticated access to CDN without the need to change URL or headers. This is especially useful for referencing a static web page in an IFRAME.

                                          Scenario. When user signs in to example.com, we would first redirect users to a non-cached page on CDN cdn.com, which would set the signed cookies, before redirecting back to example.com.

                                          On example.com, we have an IFRAME that references a static webpage on cdn.com. The static webpage references other images, JavaScript and CSS on cdn.com. The access to the webpage and other resources are authenticated by the signed cookie.

                                          AWS implementation http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private-content-signed-cookies.html

                                          3 votes
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                                            0 comments  ·  Flag idea as inappropriate…  ·  Admin →

                                            If you are using Azure CDN from Verizon Premium, you can open a technical support case to have this capability setup for you via the rules engine. Overall you would use the token authentication capabilities in Azure CDN from Verizon Premium to accomplish this – https://docs.microsoft.com/en-us/azure/cdn/cdn-token-auth. With token authentication the signed token is sent by default in the query string for your URL’s. The capability you are looking for is the ability to instead have the token sent as a cookie in the client request to the CDN.

                                            We will look at enabling this capability long term without the need to open a support case.

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