HANet: a framework toward ultimately reliable network services

The benefit of HANet is that a network-failed server will not lose any requests which are being processed. And, it is efficient since no synchronization overhead or replaying process is required. Moreover, it is totally transparent to server applications and clients. To demonstrate the feasibility of HANet, we implemented it in the Linux kernel. According to the performance results, using a private Fast Ethernet interface for data communication leads to only 1% overhead in user-perceived latency when the public Fast Ethernet interface of the server has failed. This indicates that HANet is efficient, and hence is feasible for commercial network services.