摘 要
随着信息技术的迅猛发展，数据量呈指数级增长，传统集中式文件系统在存储容量、访问速度和可靠性方面面临诸多挑战。为解决这些问题，本研究旨在设计并实现一种高效可靠的分布式文件系统。该系统采用客户端-服务器架构，通过将文件切片存储于多个节点来提高存储效率与容错能力。创新性地引入一致性哈希算法优化数据分布策略，确保数据均衡分布的同时降低维护成本。同时，基于Paxos协议构建了高可用元数据管理机制，有效解决了单点故障问题。实验结果表明，在大规模数据存储场景下，所设计的分布式文件系统能够提供稳定高效的读写性能，平均吞吐量较传统方案提升30%以上，响应时间缩短25%，展现出良好的可扩展性和容错性。此外，系统支持动态节点加入与退出功能，进一步增强了灵活性。本研究不仅为海量数据存储提供了新的解决方案，也为后续相关研究奠定了理论基础和技术支持，具有重要的学术价值和广阔的应用前景。
关键词：分布式文件系统 一致性哈希算法 Paxos协议
Abstract
With the rapid development of information technology and the exponential growth of data volumes, traditional centralized file systems face numerous challenges in terms of storage capacity, access speed, and reliability. To address these issues, this study aims to design and implement an efficient and reliable distributed file system. The system adopts a client-server architecture, enhancing storage efficiency and fault tolerance by slicing files and storing them across multiple nodes. Innovatively, a consistent hashing algorithm is introduced to optimize data distribution strategies, ensuring balanced data allocation while reducing maintenance costs. Meanwhile, a high-availability me tadata management mechanism based on the Paxos protocol is established, effectively resolving single-point failure problems. Experimental results demonstrate that under large-scale data storage scenarios, the designed distributed file system provides stable and efficient read/write performance, with average throughput increasing by more than 30% and response time decreasing by 25% compared to traditional solutions, showcasing excellent scalability and fault tolerance. Additionally, the system supports dynamic node joining and leaving, further enhancing flexibility. This research not only offers a new solution for massive data storage but also lays a theoretical foundation and technical support for subsequent related studies, possessing significant academic value and broad application prospects.
Keyword:Distributed File System Consistent Hashing Algorithm Paxos Protocol
目 录
引言 1
1分布式文件系统概述 1
1.1分布式文件系统定义与特点 1
1.2发展历程与研究现状 2
1.3关键技术挑战分析 3
2系统架构设计 3
2.1架构模型选择依据 3
2.2数据存储与管理机制 4
2.3容错与一致性保障 4
3核心功能实现 5
3.1文件命名与寻址方法 5
3.2并发控制与访问调度 5
3.3性能优化策略研究 6
4实验与性能评估 6
4.1测试环境搭建说明 7
4.2功能验证与稳定性测试 7
4.3性能指标对比分析 8
结论 8
参考文献 10
致谢 10
