akamai工作原理

Akamai is one of the world’s leading Content Delivery Network (CDN) providers. Through the Akamai Intelligent Platform many products are offered to aid performance, availability, security, and insight generation.

Akamai是全球领先的内容交付网络(CDN)提供商之一。 通过Akamai智能平台 ，提供了许多产品来帮助提高性能，可用性，安全性和洞察力。

Other CDNs include Cloudflare, Fastly, MaxCDN, Incapsula, and Rackspace.

其他CDN包括Cloudflare，Fastly，MaxCDN，Incapsula和Rackspace。

Here we will look at what a CDN is, then some specifics around Akamai’s implementation, including:

在这里，我们将了解什么是CDN，然后介绍有关Akamai实施的一些细节，包括：

• The Akamai Intelligent Platform and Edge Servers
  Akamai智能平台和边缘服务器
• The Akamai Interface and Property Manager
  Akamai界面和资产管理器
• Routing Performance
  路由性能
• Caching
  快取

什么是CDN？ (What is a CDN?)

A user request for content on the public Internet may appear simple, connecting to the server holding the content (the ‘content origin’) and returning this to the user, but it is in fact very complex.

用户在公共Internet上对内容的请求可能看起来很简单，它连接到保存内容的服务器(“内容来源”)并将其返回给用户，但实际上非常复杂。

The connection may need to go through many Internet Service Providers (ISPs), peering points, and data centres, across competing networks, and suffer from no consistently available routes.

讯享网

该连接可能需要跨竞争网络通过许多Internet服务提供商(ISP)，对等点和数据中心，并且没有一致可用的路由。

Many different device types and bandwidths may be used, from different global locations, with different content types requested.

可以从不同的全球位置使用许多不同的设备类型和带宽，并请求不同的内容类型。

This can lead to fluctuating speed and availability, security challenges, and little visibility of what is happening between the user and the content origin.

这可能会导致速度和可用性的波动，安全性挑战以及用户与内容来源之间正在发生的情况的很少可见性。

A CDN places more control in the hands of the content provider, and helps improve the end user experience.

CDN将更多控制权交给内容提供商，并有助于改善最终用户体验。

It does this by acting as a parallel high-performance network, maintaining its own network of highly-distributed servers. By being dispersed over many physical and network locations, but optimized as one network, more control and reliability exists for user requests.

它通过充当并行高性能网络来实现此目的，并维护其自己的高度分布式服务器网络。 通过分散在许多物理和网络位置，但作为一个网络进行了优化，可以为用户请求提供更多的控制和可靠性。

As a business grows, scaling to meet higher demands on the content origin also has challenges. We will also look at how CDN tools can be used to reduce load on the origin, helping not just improve performance, but also reduce cost by reducing how high the origin must be scaled.

随着业务的增长，扩展以满足对内容来源的更高要求也面临挑战。 我们还将研究如何使用CDN工具来减少原点上的负载，不仅有助于提高性能，还可以通过减少必须缩放原点的高度来降低成本。

Akamai智能平台 (Akamai Intelligent Platform)

Akamai maintains a global network of more than 240,000 ‘edge servers’. These are positioned at the ‘edge’ of the Internet, as close to end users as possible. To achieve this many edge servers are even located directly in ISPs, or in mobile data towers, to even greater reduce the latency between connecting to a user’s ISP before moving into the Akamai network.

Akamai维护着由24万多台“边缘服务器”组成的全球网络。 它们位于互联网的“边缘”，并尽可能靠近最终用户。 为了实现这一目标，