{"id":4279,"date":"2019-05-14T14:01:00","date_gmt":"2019-05-14T12:01:00","guid":{"rendered":"https:\/\/wolf-of-seo.de\/?post_type=glossary&p=4279"},"modified":"2023-04-24T15:01:53","modified_gmt":"2023-04-24T13:01:53","slug":"cdn-content-delivery-network","status":"publish","type":"glossary","link":"https:\/\/wolf-of-seo.de\/en\/what-is\/cdn-content-delivery-network","title":{"rendered":"CDN (Content Delivery Network)"},"content":{"rendered":"

\"What<\/p>\n

What is <\/strong>a CDN (Content Delivery Network<\/strong>) ?<\/h2>\n

A CDN, also called a Content Delivery Network, is a group of geographically distributed and interconnected servers that deliver cached Internet content from a network location near a user to speed up its delivery. The main goal of a CDN is to improve web performance by reducing the time required to transfer content and Rich Media<\/span> to the user's devices connected to the Internet is shortened.<\/p>\n

Die Architektur des „Content-Bereitstellungsnetzwerks“ ist auch darauf ausgelegt, die Netzwerklatenz zu reduzieren, die oft durch den Transport von Daten über lange Strecken und über mehrere Netzwerke verursacht wird. Die Eliminierung von Latenzzeiten gewinnt zunehmend an Bedeutung, da immer mehr dynamische Inhalte, Videos und Software as a Service an eine wachsende Anzahl mobiler Geräte geliefert werden.<\/p>\n

CDN providers host cached content either in their own network points of presence (POP) or in third-party data centers. When a user requests content from a website and that content is cached in a content delivery network, the CDN forwards the request to the server closest to that user and delivers the cached content from its location at the edge of the network. This process is usually invisible to the user.<\/p>\n

For which needs is a CDN suitable?<\/strong><\/h2>\n

A variety of businesses and organizations are using CDNs to cache their website content to meet the performance and security needs of their organizations. The need for CDN services is increasing as websites stream more video, E-commerce<\/span>-applications and Cloud<\/span>-based applications where high performance is paramount. Few CDNs have POPs in every country, which means that many companies use multiple CDN providers to ensure they can meet the needs of their business or residential customers regardless of location.<\/p>\n

Besides content Caching<\/span> und schneller Datenlieferung nutzen CDN-Anbieter ihre Präsenz am Rande des Netzwerks, indem sie Dienste anbieten, die ihre Kernfunktionalitäten ergänzen. Dazu gehören Sicherheitsdienstleistungen, die Distributed Denial-of-Service (DDoS)-Schutz, Web Application Firewalls (WAFs) und Bot-Minderung, Web- und Anwendungs-Performance und -Beschleunigungsdienste, Streaming-Video- und Broadcast-Medienoptimierung und sogar Digital Rights Management für Video umfassen. Einige CDN-Anbieter stellen ihre APIs auch Entwicklern zur Verfügung, die die CDN-Plattform an ihre Geschäftsanforderungen anpassen möchten, insbesondere wenn Webseiten dynamischer und komplexer werden.<\/p>\n

How does a CDN work?<\/strong><\/h2>\n

The process of accessing content cached at a CDN network edge location is almost always transparent to the user. The CDN management software dynamically calculates which server is closest to the requesting user and delivers content based on those calculations. The CDN server at the edge of the network communicates with the content origin server to ensure that any content that was not previously cached is also delivered to the user. This eliminates not only the distance that content travels, but also the number of hops that a data packet must make. The result is less packet loss, optimized bandwidth and faster performance, which minimizes timeouts, latency and jitter and improves the overall user experience. In the event of an Internet attack or outage, content hosted on a CDN server remains available to at least some users.<\/p>\n

Companies buy services from CDN providers to make their content available to their users from the nearest location. CDN providers either host content themselves or pay network operators and Internet Service Provider<\/span> (ISPs) to host CDN servers. CDN providers not only use servers at the edge of the network, but also load-balance and solid-state disks to get data to users faster. They also work to reduce file size through compression and special algorithms, and they use machine learning and AI to enable faster load and transfer times.<\/p>\n

Content Delivery Netwoks Provider:<\/strong><\/h2>\n
    \n
  1. Akamai:<\/strong> Akamai is one of the largest providers of CDN services. It offers a wide range of solutions, including content delivery, Cloud<\/span>-security, web performance and online video streaming. It has a worldwide network of more than 200,000 servers in over 130 countries.<\/li>\n
  2. Cloudflare:<\/strong> Cloudflare is another major provider of CDN services, offering a wide range of solutions for content delivery, web performance, security and DDoS protection. It has a worldwide network of over 200 data centers.<\/li>\n
  3. Amazon CloudFront:<\/strong> Amazon CloudFront is a CDN service from Amazon Web Services (AWS). It provides content delivery, web performance, and security features. It leverages AWS's global network to deliver content quickly and reliably.<\/li>\n
  4. Fastly:<\/strong> Fastly is a CDN services provider that specializes in delivering fast and reliable content delivery and web performance optimization. It has a worldwide network of data centers and edge locations.<\/li>\n
  5. StackPath:<\/strong> StackPath is a CDN services provider offering a wide range of solutions for content delivery, web performance, security and Cloud<\/span>-computing. It has a global network of over 30 data centers and edge sites.<\/li>\n<\/ol>\n

    Sample setup from Cloudflare<\/strong><\/h2>\n

    Connecting your website to the Cloudflare CDN usually requires the following steps:<\/p>\n

      \n
    1. Create an account with Cloudflare:<\/strong> Go to the Cloudflare website and register for a free account.<\/li>\n
    2. Adding your website:<\/strong> Enter the URL<\/span> Ihrer Website in das Suchfeld auf der Cloudflare-Startseite ein und klicken Sie auf „Scan DNS Records“. Cloudflare scannt dann Ihre DNS-Einträge und zeigt Ihnen eine Liste der gefundenen Einträge an.<\/li>\n
    3. Choose a plan:<\/strong> Cloudflare offers several plans. Choose the plan that best fits your needs.<\/li>\n
    4. Change your DNS records:<\/strong> Cloudflare will prompt you to change your DNS records in order to prevent the Traffic<\/span> from your website through Cloudflare. You need to make these changes with your domain registrar.<\/li>\n
    5. Activate the services:<\/strong> After you change your DNS records, you can enable Cloudflare's services. These can include content delivery, web performance, security, and DDoS protection, among others.<\/li>\n
    6. Configure your settings:<\/strong> Cloudflare offers many settings that you can configure to optimize and protect your website. These include among others Caching<\/span>-settings, security settings and the configuration of SSL\/TLS.<\/li>\n
    7. Monitor your website:<\/strong> Use Cloudflare reports and tools to monitor your website's performance and troubleshoot errors.<\/li>\n<\/ol>\n

      It is important to note that the exact steps may vary depending on your current setup and website requirements. If you have any problems or uncertainties, I recommend reading Cloudflare's official documentation or contacting support.<\/p>\n

      History of CDNs<\/strong><\/h2>\n

      So-called first-generation CDNs, which are based on E-commerce<\/span>-transactions, software downloads, and audio and video streaming. As Cloud<\/span> and mobile computing gained prominence, second-generation CDN services evolved to enable efficient delivery of more complex multimedia and Web content to a broader user community across a wider mix of devices. As Internet usage grew, the number of CDN providers multiplied, as did the services offered by CDN companies.<\/p>\n

      New CDN business models also include a variety of pricing methods, ranging from per-use and per-volume content fees to flat rates or free basic services, with add-on fees for additional performance and optimization services. A variety of companies are using CDN services to accelerate static and dynamic content, online games and mobile content, streaming video, and a range of other applications.<\/p>\n

      What are the main advantages of using a CDN?<\/strong><\/h2>\n

      The main advantages of traditional CDN services include the following:<\/p>\n

        \n
      • Improved loading times<\/strong> of the web pages to prevent users from viewing a slow-loading website or E-commerce<\/span>-application, where purchases remain in the shopping cart;<\/em><\/li>\n
      • Improved security<\/strong> through a growing number of services that include DDoS mitigation, WAFs and bot mitigation;<\/em><\/li>\n
      • Increased content availability,<\/strong> as CDNs can handle more traffic and avoid network outages better than the original server, which may be located several networks away from the end user; and a diverse mix of performance and web content optimization services that complement cached page content.<\/em><\/li>\n
      • Scalability:<\/strong> A CDN allows you to align capacity with requests, it allows you to flexibly adapt to actual requirements, and it facilitates load balancing and scalability of content, which means you don't have to rely on the limitations of a single server.<\/li>\n
      • Reduction of latency:<\/strong> A CDN can help reduce latency (the time it takes to send data from a server to a user) by delivering content from a server near the user.<\/li>\n
      • Cost savings:<\/strong> A CDN can help reduce the cost of deploying and operating a website by reducing the load on the origin server, thereby minimizing the resources required.<\/li>\n
      • Increase in performance:<\/strong> A CDN increases the performance of the website by caching the content of the website (such as images, videos, HTML, CSS) and thereby reducing the loading times on the client side.<\/li>\n<\/ul>\n

        Disadvantages:<\/h2>\n
          \n
        1. Cost:<\/strong> A CDN can incur additional costs, as there is usually a monthly fee for the service, and the cost can increase depending on the number of retrievals and bandwidth requirements.<\/li>\n
        2. Configuration Effort:<\/strong> A CDN requires proper configuration to ensure that content is properly replicated across servers. This can take time and expertise.<\/li>\n
        3. Time delay for updates:<\/strong> If the content is replicated to multiple servers, it may take some time for the updates to be available on all servers.<\/li>\n
        4. Dependence on third-party vendors:<\/strong> A CDN is a service provided by a third-party provider and there is always some dependency on that third-party provider in terms of availability, service level and cost.<\/li>\n
        5. Limited Control:<\/strong> Depending on the type of CDN service you use, you may have limited control over the configuration and management options of the network.<\/li>\n
        6. Problem with Cookies<\/span> and sessions:<\/strong> If your website has many Cookies<\/span> or sessions, there may be difficulties because a CDN usually has no way to replicate this information to multiple servers.<\/li>\n<\/ol>\n

          It is important to emphasize that although these disadvantages exist, CDNs are generally considered a useful tool to increase the performance, availability and security of websites. Therefore, it is always advisable to evaluate the advantages and disadvantages of CDNs and check whether a CDN is suitable for the specific needs of the website.<\/p>\n

          Usage:<\/h2>\n

          CDNs (Content Delivery Networks) are suitable for many types of websites, as they help to reduce the loading time of web pages and increase the Traffic<\/span> distribute more efficiently. Here are some examples of types of websites that can benefit from using a CDN:<\/p>\n

            \n
          1. Media and entertainment websites:<\/strong> Websites that host videos, music, or other large media files especially benefit from a CDN. By using a CDN, these files can be delivered to users faster, reducing buffering times and improving the user experience.<\/li>\n
          2. E-commerce<\/span>-Websites:<\/strong> For online stores, fast load times are critical to retaining potential customers and increasing conversion rates. CDNs can help reduce load times and ensure that images and other resources load quickly, especially during periods of high Traffic<\/span>, such as sales promotions or holidays.<\/li>\n
          3. News and blog sites:<\/strong> Websites with a lot of content, such as news portals or blogs, can also benefit from a CDN. By delivering content faster, users can access the desired articles more quickly and reduce bounce rates.<\/li>\n
          4. International websites:<\/strong> Websites that target a global audience can benefit greatly from a CDN. CDNs distribute content to servers around the world, giving users around the world faster load times and a better user experience.<\/li>\n
          5. Websites with high Traffic<\/span>:<\/strong> Websites that regularly generate a high Traffic<\/span> can benefit from the load balancing that CDNs offer. By distributing traffic across different servers, bottlenecks are avoided and the likelihood of downtime is reduced.<\/li>\n<\/ol>\n

            In summary, it can be said that almost any type of website can benefit from using a CDN. The advantages of faster loading times, better load balancing and an improved user experience make CDNs an important technology for many websites. Webmaster<\/span> and website operators.<\/p>\n

            Conclusion:<\/strong><\/h2>\n

            A content delivery network (CDN) is a distributed network that delivers content to end users quickly and reliably. It offers many benefits, including improved performance and usability, but it can also be expensive and difficult to implement. CDNs are commonly used by enterprises and web developers to deliver content to end users faster and more efficiently.<\/p>","protected":false},"excerpt":{"rendered":"

            What is a CDN (Content Delivery Network)<\/span><\/span> ? A CDN, also called a Content Delivery Network, is a group of geographically distributed and interconnected servers that deliver cached Internet content from a network location near a user to speed up its delivery. The main goal of a CDN is to improve web performance by reducing the time, [...]<\/p>","protected":false},"author":3,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-4279","glossary","type-glossary","status-publish","hentry"],"acf":{"show_faq":true,"faq_q_1":"Was ist ein cdn-Netzwerk?","faq_antwort_1":"Ein cdn-Netzwerk (Content Delivery Network) ist ein verteiltes Netzwerk von Servern, die Daten wie Bilder, Videos, Audio und andere Online-Inhalte schneller und stabiler liefern. Es verringert die Last auf einem einzelnen Server und erh\u00f6ht die Ladegeschwindigkeit und den Verbindungsnachweis f\u00fcr Endbenutzer.","faq_q_2":"Warum sollte ich ein cdn-Netzwerk verwenden?","faq_antwort_2":"cdn-Netzwerke k\u00f6nnen dazu beitragen, die Ladezeiten f\u00fcr Webseiten und mobile Anwendungen zu verk\u00fcrzen, da sie Inhalte an Benutzer aus dem n\u00e4chstgelegenen Server liefern, was zu einer verbesserten Benutzerfreundlichkeit und einer h\u00f6heren Konversionsrate f\u00fchrt. Sie sorgen auch f\u00fcr eine h\u00f6here Verf\u00fcgbarkeit, da sie die Last auf mehrere Server verteilen.","faq_q_3":"Wo finde ich ein cdn-Netzwerk?","faq_antwort_3":"Es gibt viele verschiedene cdn-Dienste, die auf dem Markt verf\u00fcgbar sind. Einige der beliebtesten Anbieter sind Akamai, Cloudflare, Fastly, Amazon CloudFront und Microsoft Azure CDN.","faq_q_4":"Was kann ein cdn-Netzwerk leisten?","faq_antwort_4":"ein cdn-Netzwerk kann die Ladezeiten f\u00fcr Webseiten und mobile Anwendungen verbessern und gleichzeitig die Verf\u00fcgbarkeit erh\u00f6hen. Es kann auch verhindern, dass eine Website oder Anwendung \u00fcberlastet wird, indem es die Last auf mehrere Server verteilt.","faq_q_5":"Welche Arten von Inhalten k\u00f6nnen \u00fcber ein cdn-Netzwerk ausgeliefert werden?","faq_antwort_5":"Ein cdn-Netzwerk kann viele Arten von Inhalten ausliefern, einschlie\u00dflich Bilder, Videos, Audios und andere Dateien. Es kann auch dynamische Inhalte wie Webseiten, mobile Anwendungen und APIs bedienen.","faq_q_6":"Wie funktioniert ein cdn-Netzwerk?","faq_antwort_6":"Ein cdn-Netzwerk besteht aus vielen Servern, die in verschiedenen Regionen auf der ganzen Welt verteilt sind. Wenn ein Benutzer eine Anfrage abschickt, wird der n\u00e4chste Server gefunden, der die Datei am schnellsten liefern kann. Der Server liefert dann die Datei an den Benutzer und die Anfrage wird beendet.","faq_q_7":"Welche Vorteile bietet mir ein cdn-Netzwerk?","faq_antwort_7":"Ein cdn-Netzwerk kann dazu beitragen, Webseiten und mobile Anwendungen schneller zu laden, was zu einer h\u00f6heren Benutzerfreundlichkeit und einer h\u00f6heren Konversionsrate f\u00fchrt. Es kann auch dabei helfen, die Verf\u00fcgbarkeit zu erh\u00f6hen, da es die Last auf mehrere Server verteilt.","faq_q_8":"Was sind die Nachteile eines cdn-Netzwerks?","faq_antwort_8":"Ein cdn-Netzwerk kann kostspielig sein, insbesondere f\u00fcr kleinere Unternehmen. Es ist auch m\u00f6glicherweise schwierig, einzurichten und zu verwalten, und es kann zu Verz\u00f6gerungen kommen, da die Dateien \u00fcber mehrere Server gesendet werden m\u00fcssen.","faq_q_9":"Wie verwalte ich ein cdn-Netzwerk?","faq_antwort_9":"Viele cdn-Anbieter bieten einfache Verwaltungstools, mit denen Sie die Konfiguration und den Betrieb des Netzwerks verwalten k\u00f6nnen. In manchen F\u00e4llen k\u00f6nnen Sie das Netzwerk auch selbst einrichten, aber es ist empfehlenswert, dass Sie sich an einen erfahrenen Dienstanbieter wenden, um zu vermeiden, dass etwas schiefgeht.","faq_q_10":"Wie kann ich ein cdn-Netzwerk sichern?","faq_antwort_10":"cdn-Netzwerke verwenden normalerweise verschiedene Sicherheitsma\u00dfnahmen, um einen sicheren Betrieb zu gew\u00e4hrleisten. Einige Ma\u00dfnahmen, die Sie ergreifen k\u00f6nnen, um die Sicherheit Ihres cdn-Netzwerks zu verbessern, sind das Aktualisieren Ihrer Server-Software, die Verwendung von Verschl\u00fcsselung und die Einrichtung einer Firewall."},"yoast_head":"\nWas ist ein CDN (Content Delivery Network)? | WOLF OF SEO<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wolf-of-seo.de\/en\/what-is\/cdn-content-delivery-network\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CDN (Content Delivery Network)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wolf-of-seo.de\/en\/what-is\/cdn-content-delivery-network\/\" \/>\n<meta property=\"og:site_name\" content=\"WOLF OF SEO\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/wolf.of.seo.ns\" \/>\n<meta property=\"article:modified_time\" content=\"2023-04-24T13:01:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/wolf-of-seo.de\/wp-content\/uploads\/2019\/06\/Was-ist-40.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@wolf_of_seo\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/wolf-of-seo.de\/was-ist\/cdn-content-delivery-network\/\",\"url\":\"https:\/\/wolf-of-seo.de\/was-ist\/cdn-content-delivery-network\/\",\"name\":\"Was ist ein CDN (Content Delivery Network)? 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