Scaling Internet Services by Dynamic Allocation of Connections
نویسندگان
چکیده
Network Dispatcher (ND) is a software tool that \routes" TCP connections to multiple TCP servers that share their workload. It exports a set of virtual IP addresses that are concealed and shared by the servers. It implements a novel dynamic load-sharing algorithm for allocation of TCP connections among servers according to their real-time load and responsiveness. ND forwards packets to the servers without performing any TCP/IP header translations, consequently outgoing server-to-client packets are not handled, and can follow a separate network route to the clients. Its allocation method was proven to be e cient in live tests, supporting Internet sites that served millions of TCP connections per hour. This paper describes the load management features of ND.
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تاریخ انتشار 1999