公开(公告)号：US20150074187A1

公开(公告)日：2015-03-12

申请号：US14542866

申请日：2014-11-17

申请人： Akamai Technologies, Inc.

发明人： Gregory Fletcher ,  Andrew F. Champagne ,  Daniel Stodolsky ,  Michael M. Afergan

IPC分类号： H04L29/08 ,  H04L29/06 ,  H04L29/12

CPC分类号： H04L67/10 ,  H04J3/1617 ,  H04L12/4633 ,  H04L29/12066 ,  H04L29/12509 ,  H04L41/5009 ,  H04L41/5077 ,  H04L41/5096 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/16 ,  H04L61/1511 ,  H04L61/2007 ,  H04L61/2567 ,  H04L61/6068 ,  H04L67/42

摘要： The present invention leverages an existing content delivery network infrastructure to provide a system that enhances performance for any application that uses the Internet Protocol (IP) as its underlying transport mechanism. An overlay network comprises a set of edge nodes, intermediate nodes, and gateway nodes. This network provides optimized routing of IP packets. Internet application users can use the overlay to obtain improved performance during normal network conditions, to obtain or maintain good performance where normal default BGP routing would otherwise force the user over congested or poorly performing paths, or to enable the user to maintain communications to a target server application even during network outages.

摘要翻译： 本发明利用现有的内容递送网络基础设施来提供一种系统，其增强使用因特网协议（IP）作为其底层传输机制的任何应用的性能。 覆盖网络包括一组边缘节点，中间节点和网关节点。 该网络提供IP分组的优化路由。 互联网应用用户可以使用覆盖层在正常网络条件下获得改进的性能，以获得或保持良好的性能，其中正常的默认BGP路由将强制用户过度拥挤或性能差的路径，或使用户能够保持与目标的通信 服务器应用程序甚至在网络中断期间。

公开(公告)号：US20130304892A1

公开(公告)日：2013-11-14

申请号：US13941859

申请日：2013-07-15

申请人： Akamai Technologies, Inc.

发明人： Michael M. Afergan ,  Andrew F. Champagne ,  Gregory Fletcher ,  Daniel Stodolsky

IPC分类号： H04L12/24

CPC分类号： H04L69/161 ,  H04L12/66 ,  H04L41/00 ,  H04L67/141 ,  H04L67/42 ,  H04L69/16

摘要： Applications that run on an overlay network-based managed service achieve high performance gains using a set of TCP optimizations. In a first optimization, a typical single TCP connection between a client and an origin server is broken into preferably three (3) separate TCP connections. These connections are: an edge-to-client connection, an edge-to-edge connection, and edge-to-origin connection. A second optimization replicates TCP state along the connection to increase fault tolerance. In this approach, preferably a given TCP connection is maintained on two servers. When a packet is received by one server, called the primary, its state is updated and then passed to a second server, called the backup. Only when the backup sends an acknowledgement back to the primary can it then send a TCP acknowledgement back to the host that originally sent the packet. Another optimization reduces connection establishment latency.

摘要翻译： 在基于覆盖网络的托管服务上运行的应用程序使用一组TCP优化实现高性能增益。 在第一优化中，客户端和源服务器之间的典型单个TCP连接最好分成三（3）个单独的TCP连接。 这些连接是：边缘到客户端连接，边缘到边缘连接以及边缘到源连接。 第二个优化是沿连接复制TCP状态以增加容错能力。 在这种方法中，优选地，在两个服务器上保持给定的TCP连接。 当一个服务器接收到一个数据包（称为主服务器）时，它的状态将被更新，然后传递给称为备份的第二个服务器。 只有当备份将确认发送回主节点时，才能将TCP确认发送回原始发送数据包的主机。 另一个优化减少了连接建立延迟。