Description
TL;DR: A proactive-recovery design that migrates service replicas across hosts so a long-running Byzantine-fault-tolerant system can narrow its vulnerability window.
About This Document
Wenbing Zhao proposes service migration as an alternative to periodically rebooting fixed replicas. The design coordinates replica movement, state transfer, membership changes, and client interaction while keeping enough correct replicas available. It also considers workload and host selection so recovery can respond to changing conditions rather than following one rigid rotation.
Why Bitcoin People May Care
This predates Bitcoin and is not Nakamoto consensus. It studies a permissioned replicated service with bounded Byzantine faults, whereas Bitcoin uses an open network, proof of work, and economic incentives. The paper remains useful background for thinking about long-lived adversaries, compromised machines, state refresh, and the difference between tolerating faults and recovering from them.
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Document Details
- Title: Proactive Service Migration for Long-Running Byzantine-Fault-Tolerant Systems
- Author / organization: Wenbing Zhao
- Year: 2008
- Language: English
- Document type: Distributed-systems research paper
- Pages: 11
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