內容傳遞網路Content Delivery Networks

本主題中的資訊可協助您了解內容傳遞網路 (Cdn) 以及如何使用 Office 365。The information in this topic will help you learn about Content Delivery Networks (CDNs) and how they are used by Office 365.

Cdn 協助保護使用者的 Office 365 快速且可靠。CDNs help keep Office 365 fast and reliable for end users. Office 365 等雲端服務會使用 Cdn 快取靜態的資產更接近要求他們的瀏覽器以加速下載項目,並減少延遲。Cloud services like Office 365 use CDNs to cache static assets closer to the browsers requesting them to speed up downloads and reduce latency. 公用 Cdn 允許加速下載的一般內容,例如 javascript 檔案、 圖示和影像,雖然私人 Cdn 可以提供快速的安全使用者內容,例如影片和 SharePoint Online 的文件庫的存取權。Public CDNs allow faster downloads of generic content such as javascript files, icons and images, while private CDNs can provide fast, secure access to user content such as videos and SharePoint Online document libraries.

Head 回到網路規劃和效能調整的 Office 365Head back toNetwork planning and performance tuning for Office 365.

什麼 CDN 究竟是?What exactly is a CDN?

大部分的企業雲端服務會使用 Cdn。CDNs are used by most enterprise cloud services. Office 365 等雲端服務有數百萬份客戶一次下載混合專屬的內容 (例如電子郵件) 和一般內容 (例如圖示)。Cloud services like Office 365 have millions of customers downloading a mix of proprietary content (such as emails) and generic content (such as icons) at one time. 它會將所有人使用的圖示,例如影像最接近使用者的電腦,盡可能更有效率。It's more efficient to put images everyone uses, like icons, as close to the user's computer as possible. 尚未,它不是實際的每個雲端服務,以建立儲存此一般內容,在每個都會] 區域中,或即使是在世界各地的每個主要網際網路 hub 讓這些 Cdn 的一些共用的 CDN 資料中心。Yet, it isn't practical for every cloud service to build CDN datacenters that store this generic content in every metropolitan area, or even in every major Internet hub around the world, so some of these CDNs are shared.

Cdn 可以是私人或公開。CDNs can be private or public. 擁有私人 Cdn 且 21vianet 運作的單一的公司,而只有該公司的應用程式與服務可以使用它。Private CDNs are owned and operated by a single company, and only that company's applications and services can use it. 租用使用狀況,多家公司的公司會執行公用 Cdn。Public CDNs are run by companies who lease usage to multiple companies. 根據您所在地,可能是最有效率的 Office 365 為您下載泛型影像,從 Office 365 擁有 CDN 和執行、 公用 CDN 或兩者的組合。Depending on where you're located, it might be most efficient for Office 365 to download generic images for you from a CDN that Office 365 owns and runs, a public CDN, or a combination of the two. 無論使用何種類型的 CDN,以擷取資料的步驟都相同。Regardless of what type of CDN is used, the steps to retrieve the data are the same.

  1. 您的用戶端要求的資料從 Office 365。Your client requests data from Office 365.

  2. Office 365 直接對您的用戶端中傳回的資料,或是會引導您以 CDN 的用戶端。Office 365 either returns the data directly to your client or directs your client to a CDN.

  3. 如果在 CDN 已快取資料,您的用戶端會直接從最接近的 CDN 位置下載資料至您在網際網路上的用戶端中。If the data is already cached at the CDN, your client downloads the data directly from the nearest CDN location to your client on the internet.

  4. 如果資料不在 CDN 快取,CDN 節點要求從 Office 365 的資料,然後快取的資料為一段時間之後您的用戶端下載資料。If the data isn't cached at the CDN, the CDN node requests the data from Office 365 and then cache's the data for a period of time after your client downloads the data.

Cdn 取出的檔案和影像從最接近的 Office 365 資料中心,並接著,您的用戶端的檔案和影像會從提取最接近的 CDN。The CDNs pull the files and images from the nearest Office 365 datacenter and in turn, your client pulls the files and images from the nearest CDN. 當使用者正在存取雲端服務,例如閱讀 Outlook Web App 中的電子郵件使用者的瀏覽器會嘗試從 Office 365 資料中心中擷取的檔案和影像。When users are accessing a cloud service, like reading email in Outlook Web App, the user's browser attempts to retrieve the files and images from the Office 365 datacenter. 而不是花時間與頻寬傳遞檔案,Office 365 會在瀏覽器重新導向至 CDN。Instead of spending the time and bandwidth delivering the files, Office 365 redirects the browser to the CDN. CDN 找出最接近的資料中心到使用者的瀏覽器,並使用重新導向,從該處下載一般的影像。The CDN figures out the closest datacenter to the user's browser and, using redirection, downloads the generic images from there. 使用此 CDN 重新導向快速,且它會儲存使用者大量下載時間。Using this CDN redirection is quick, and it saves users a lot of download time.

Cdn 如何讓服務運作得更快?How do CDNs make services work faster?

超過再次下載常見之類的圖示,可能會耗費可更妥善地用於下載重要的個人內容,例如電子郵件或文件的網路頻寬。Downloading common things like icons over and over again can take up network bandwidth that can be better used for downloading important personal content, like email or documents. 因為 Office 365 使用架構,包括 Cdn、 圖示、 指令碼,以及其他一般內容可從伺服器更接近下載至用戶端電腦,更快速地進行下載。Because Office 365 uses an architecture that includes CDNs, the icons, scripts, and other generic content can be downloaded from servers closer to client computers, making the downloads faster. 這表示您個人的內容,安全地儲存在 Office 365 資料中心的快速存取。This means faster access to your personal content, which is securely stored in Office 365 datacenters.

如何應該設定我的網路以便 Cdn 運作起來最順暢與 Office 365?How should I set up my network so that CDNs work best with Office 365?

如果您計劃對 Office 365 的網路連線,很有幫助 Cdn 的運作方式一般而言,以及管理 CDN 網路流量的方式。If you're planning Network connectivity to Office 365, it's helpful to understand how CDNs work in general, and how CDN network traffic should be managed.

當您啟用 CDN 的 Office 365 租用戶時,您首先控管 (稱為 「原點Cdn 的內容中) 的內容來源的設定原則資料分類] 或 [您想要透過 CDN 散發的檔案類型。When you enable a CDN for your Office 365 tenant, you begin by setting policies that govern the content sources (called origins in the context of CDNs), data classifications or file types you want to be distributed over the CDN. 使用者存取指定的內容將會重新導向至最接近的 CDN 中的檔案位置。Users who access the specified content will be redirected to the closest location of the file in the CDN. 因此,您應該使用管理 Office 365 端點中所述的最佳作法,以確保您的網路組態允許透過管理中心的 proxy,以避免存取 CDN 直接,而不是路由 CDN 流量的用戶端瀏覽器簡介不必要的延遲。Therefore, you should use the best practices outlined in Managing Office 365 endpoints to ensure that your network configuration permits client browsers to access the CDN directly rather than routing CDN traffic through central proxies to avoid introducing unnecessary latency.

為我的資料安全嗎?Is my data safe?

我們小心謹慎以確保我們保護執行您的業務資料。We take great care to help ensure that we protect the data that runs your business. 傳輸中和靜態加密儲存在 Cdn 的特定客戶的資料。Customer-specific data stored in CDNs is encrypted both in transit and at rest.

注意

CDN 提供者可能會有不同於所述的 Office 365 信任中心的承諾的隱私權和法規遵循標準。CDN providers may have privacy and compliance standards that differ from the commitments outlined by the Office 365 Trust Center. 透過 CDN 服務快取的資料可能不符合到 Microsoft 資料處理合約 (DPT),且可能會在 Office 365 信任中心合規性界限之外。Data cached through the CDN service may not conform to the Microsoft Data Processing Terms (DPT), and may be outside of the Office 365 Trust Center compliance boundaries.

深入資訊的隱私權和資料保護 Office 365 CDN 提供者的詳細資訊,請造訪下列各項:For in-depth information about privacy and data protection for Office 365 CDN providers, visit the following:

如何保護我的網路,具有所有這些 3rd 廠商服務?How can I secure my network with all these 3rd party services?

利用廣泛的協力廠商服務可讓 Office 365 擴充和符合可用性需求,以及使用 Office 365 時強化使用者體驗。Leveraging an extensive set of partner services allows Office 365 to scale and meet availability requirements as well as enhance the user experience when using Office 365. Office 365 採用 3rd 廠商服務包含兩個憑證撤銷清單;例如 crl.microsoft.com 或 sa.symcb.com 和 Cdn;例如 r3.res.outlook.com。The 3rd party services Office 365 leverages include both certificate revocation lists; such as crl.microsoft.com or sa.symcb.com, and CDNs; such as r3.res.outlook.com. 每個 CDN FQDN Office 365 使用是 Office 365 自訂 FQDN。Every CDN FQDN Office 365 uses is a custom FQDN for Office 365. 如果您正在傳送到 Office 365 要求的 FQDN 您可以確保 CDN 提供者控制 FQDN 並在該位置的基礎內容。If you're sent to a FQDN at the request of Office 365 you can be assured that the CDN provider controls the FQDN and the underlying content at that location.

客戶,還是要隔離目的地要求目的地為 3rd 廠商,從 Microsoft 或 Office 365 資料中心的要求我們已在管理 Office 365 端點上寫設定下列項目的指引。For customers that still want to segregate requests destined for a Microsoft or Office 365 datacenter from requests that are destined for a 3rd party, we've written up guidance on Managing Office 365 endpoints.

是否有 Office 365 使用的所有 Cdn 的清單?Is there a list of all the CDNs that Office 365 uses?

使用 Office 365 Cdn 永遠都會受到變更,並在許多情況下,有多個 CDN 合作夥伴設定事件中其中一個已無法使用。The CDNs in use by Office 365 are always subject to change and in many cases there are multiple CDN partners configured in the event one is unavailable. 主要是使用中的 Cdn:The primary CDNs in use are:

這些 CDN 解決方案有全球提升到全球多個角落的服務] 的範圍。These CDN solutions have a global reach enhancing the reach of the service to more corners of the world. 儲存於該處的內容包含一般 Office 365 指令碼、 檔案和影像。The content that is stored there includes general Office 365 scripts, files, and images. 例如,當您登入至 portal.office.com,影像會提取從最接近 CDN 以加快頁面載入時間。For example, when you logon to portal.office.com, the images are pulled from the nearest CDN to speed up the page load times. 其他範例包括 Office 365 專業增強版上以加速下載最新版的 Office 所花費的時間量 CDN 儲存安裝位元。Other examples include Office 365 ProPlus storing the installation bits on a CDN to speed up the amount of time it takes to download the latest version of Office.

另外還有一些 Cdn 例如視訊檔案儲存為 Office 365 影片的專屬內容。There is also some proprietary content that is stored on CDNs such as the video files for Office 365 Video. 一旦您上傳影片,檔案會加密,,然後儲存在與 Azure 媒體服務及其加密格式。Once you upload the videos, the files are encrypted and then stored in their encrypted format with Azure Media Services. 當 Office 365 的視訊播放程式會擷取影片它是第一次快取至最接近的 CDN 之前正在下載以加速下載視訊所花費的時間量。When the Office 365 video player retrieves the video it is first cached to the nearest CDN before being downloaded to speed up the amount of time it takes to download the video.

如需如何使用 Office 365 CDN 的詳細資訊,請參閱 <使用 SharePoint Online 的 Office 365 內容傳遞網路。For information on how to use the Office 365 CDN, see Use the Office 365 content delivery network with SharePoint Online.

是否有利用 Cdn 的所有 Fqdn 的清單?Is there a list of all the FQDNs that leverage CDNs?

清單中的 Fqdn,以及它們如何運用 Cdn 變更一段時間,請參閱我們已發佈之Office 365 Url 和 IP 位址範圍] 頁面,以取得最新利用 Cdn 的最新 Fqdn。The list of FQDNs and how they leverage CDNs change over time, refer to our published Office 365 URLs and IP address ranges page to get up to date on the latest FQDNs that leverage CDNs.

可以在我的區域網路使用我自己 CDN 及快取的內容?Can I use my own CDN and cache content on my local network?

我們不斷正在尋找新的方法來支援我們的客戶的需求,目前瀏覽使用快取 proxy 解決方案和其他在內部部署 CDN 解決方案。We're continually looking for new ways to support our customers needs and are currently exploring the use of caching proxy solutions and other on-premises CDN solutions.

我使用 Azure ExpressRoute for Office 365,不會變更事項嗎?I'm using Azure ExpressRoute for Office 365, does that change things?

Azure ExpressRoute for Office 365提供從公用的網際網路專用的連線隔離的 Office 365 基礎結構。Azure ExpressRoute for Office 365 provides a dedicated connection to Office 365 infrastructure that is segregated from the public internet. 這表示用戶端仍將需要透過非 ExpressRoute 連線以連線到 Cdn 和其他 Microsoft 基礎結構,不明確包含清單中的 ExpressRoute 所支援的服務連線。This means that clients will still need to connect over non-ExpressRoute connections to connect to CDNs and other Microsoft infrastructure that is not explicitly included in the list of services supported by ExpressRoute. 如需如何路由傳送特定的流量,例如要求目的地 Cdn 的詳細資訊,請參閱管理 Office 365 網路流量For more information about how to route specific traffic such as requests destined for CDNs, refer to Office 365 network traffic management.

您可以使用下列短連結返回這裡:https://aka.ms/o365cdnsHere's a short link you can use to come back: https://aka.ms/o365cdns

另請參閱See also

管理 Office 365 端點Managing Office 365 endpoints

Office 365 URL 與 IP 位址範圍Office 365 URLs and IP address ranges

使用 SharePoint Online 中使用 Office 365 內容傳遞網路Use the Office 365 content delivery network with SharePoint Online

Microsoft 信任中心Microsoft Trust Center