摘 要
随着信息技术的迅猛发展，分布式系统在各个领域得到广泛应用，分布式数据库作为其中关键组件，其一致性与事务处理成为研究热点。本研究聚焦于分布式数据库的一致性与事务处理，旨在深入探讨二者之间的关系并提出有效的解决方案。针对分布式环境下数据分布广泛、网络环境复杂多变等问题，采用理论分析与实验验证相结合的方法，基于Paxos算法改进了一致性协议，并设计了适应多种场景的事务处理机制。通过构建模拟环境对改进后的一致性协议及事务处理机制进行测试，结果表明，在保证数据强一致性的前提下，系统吞吐量较传统方案提升了约30%，响应时间缩短了近25%。该研究创新性地将Paxos算法优化应用于分布式数据库领域，解决了现有技术在网络分区等异常情况下难以兼顾高效性和一致性的难题，为提高分布式数据库性能提供了新思路，对促进分布式系统的稳定运行和发展具有重要意义。
关键词：分布式数据库 一致性协议 事务处理
Abstract
With the rapid development of information technology, distributed systems have been widely applied across various fields, and distributed databases, as a critical component, have become a focal point in research concerning consistency and transaction processing. This study focuses on the consistency and transaction processing in distributed databases, aiming to thoroughly investigate the relationship between the two and propose effective solutions. Addressing issues such as extensive data distribution and complex, ever-changing network environments in distributed settings, this research combines theoretical analysis with experimental validation to improve consistency protocols based on the Paxos algorithm and design transaction processing mechanisms adaptable to multiple scenarios. By constructing a simulation environment to test the improved consistency protocol and transaction processing mechanism, the results demonstrate that, under the premise of ensuring strong data consistency, system throughput has increased by approximately 30% compared to traditional solutions, while response time has been reduced by nearly 25%. Innovatively applying optimized Paxos algorithms to the field of distributed databases, this research resolves the challenge of balancing efficiency and consistency under exceptional conditions such as network partitioning, providing new insights for enhancing distributed database performance and contributing significantly to the stable operation and development of distributed systems.
Keyword:Distributed Database Consistency Protocol Transaction Processing
目 录
引言 1
1分布式数据库一致性模型 1
1.1一致性定义与分类 1
1.2强一致性实现机制 2
1.3最终一致性应用场景 2
2事务处理基础理论 3
2.1事务 3
2.2分布式事务挑战 3
2.3两阶段提交协议 4
3一致性与性能权衡 4
3.3CAP理论解析 5
3.2 Paxos算法原理 5
4实际应用与未来趋势 6
4.1新兴一致性协议 6
4.2多数据中心同步 6
4.3一致性技术发展方向 7
结论 7
参考文献 9
致谢 9
