{"title":"HydraNet-FT:提供可靠服务的网络支持","authors":"Gurudatt Shenoy, Suresh Satapati, R. Bettati","doi":"10.1109/ICDCS.2000.840987","DOIUrl":null,"url":null,"abstract":"With the Internet increasingly being used as the access medium for a variety of critical services, there is a growing need to provide fault-tolerant (FT) services over internetworks, in a completely client-transparent fashion. We present HydraNet-FT, an infrastructure to dynamically replicate services across an internetwork and have the replicas provide a single fault-tolerant service access point to clients. HydraNet-FT uses the TCP communication protocol with a few modifications on the server side to allow one-to-many message delivery from a client to service replicas and many-to-one message delivery from the replicas to the client. A communication channel between the replicas provides atomicity and message ordering. A low-latency failure estimator is used to detect failures of servers in the system and to initiate fail-over mechanisms. An implementation and measurements on a local testbed show that the overhead of our scheme is reasonably small.","PeriodicalId":284992,"journal":{"name":"Proceedings 20th IEEE International Conference on Distributed Computing Systems","volume":"28 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"40","resultStr":"{\"title\":\"HydraNet-FT: network support for dependable services\",\"authors\":\"Gurudatt Shenoy, Suresh Satapati, R. Bettati\",\"doi\":\"10.1109/ICDCS.2000.840987\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"With the Internet increasingly being used as the access medium for a variety of critical services, there is a growing need to provide fault-tolerant (FT) services over internetworks, in a completely client-transparent fashion. We present HydraNet-FT, an infrastructure to dynamically replicate services across an internetwork and have the replicas provide a single fault-tolerant service access point to clients. HydraNet-FT uses the TCP communication protocol with a few modifications on the server side to allow one-to-many message delivery from a client to service replicas and many-to-one message delivery from the replicas to the client. A communication channel between the replicas provides atomicity and message ordering. A low-latency failure estimator is used to detect failures of servers in the system and to initiate fail-over mechanisms. An implementation and measurements on a local testbed show that the overhead of our scheme is reasonably small.\",\"PeriodicalId\":284992,\"journal\":{\"name\":\"Proceedings 20th IEEE International Conference on Distributed Computing Systems\",\"volume\":\"28 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2000-04-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"40\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings 20th IEEE International Conference on Distributed Computing Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICDCS.2000.840987\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings 20th IEEE International Conference on Distributed Computing Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICDCS.2000.840987","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
HydraNet-FT: network support for dependable services
With the Internet increasingly being used as the access medium for a variety of critical services, there is a growing need to provide fault-tolerant (FT) services over internetworks, in a completely client-transparent fashion. We present HydraNet-FT, an infrastructure to dynamically replicate services across an internetwork and have the replicas provide a single fault-tolerant service access point to clients. HydraNet-FT uses the TCP communication protocol with a few modifications on the server side to allow one-to-many message delivery from a client to service replicas and many-to-one message delivery from the replicas to the client. A communication channel between the replicas provides atomicity and message ordering. A low-latency failure estimator is used to detect failures of servers in the system and to initiate fail-over mechanisms. An implementation and measurements on a local testbed show that the overhead of our scheme is reasonably small.