CSR: Small: Data on the Edge: Leveraging Edge Datacenters for Low-latency, Fault-tolerant, mobile Geo-replicated Transactional Data Stores

数据密集型计算是全球互联网服务和云应用持续增长和成功的驱动力。数据密集型计算的系统基础架构是在大型集中式数据中心的计算资源之上构建和运行的。由于经济原因，这些数据中心通常远离人口稠密的地区。这从根本上限制了用户和数据中心之间的通信速度。为了克服这一限制，该项目的目标是将数据管理系统扩展到边缘感知。边缘感知是指利用离用户更近的资源将他们经历的延迟减少一到两个数量级的能力。该项目将调查两个密切相关的研究挑战，以实现边缘感知数据管理系统。第一个研究挑战集中在分布式系统最重要的构建块之一，即不同节点之间的协议问题(也称为共识问题)。该项目提出了一种新的共识协议的设计，与现有的共识协议不同，该协议是边缘感知的，因此能够在保持共识和容错的同时实现边缘感知所带来的低延迟性能。第二个研究挑战是建立对用户移动性做出有效反应的边缘数据管理系统。该项目建议使用移动组件来增强共识协议，使其能够高效地处理用户移动性，同时保持共识和容错。除了现代生活方式外，大量商业和工业部门越来越依赖数据密集型互联网和云应用。该项目旨在推进这些应用程序的数据和系统基础设施。该项目还将为本科生和研究生提供学习和从事基础数据管理系统研究的机会。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Data-intensive computing is the driver of the continuing growth and success of global Internet services and cloud applications. The system infrastructure for data-intensive computing is built and run on top of compute resources housed in large, centralized data centers. These data centers are typically placed away from populous regions for economic reasons. This leads to a fundamental limit on the speed of communication between users and data centers. To overcome this limit, the project aims to extend data management systems to be edge-aware. Edge-awareness is the capability of utilizing resources that are closer to users to reduce the latency they experience by one to two orders of magnitude.The project will investigate two closely related research challenges to enable edge-aware data management systems. The first research challenge focuses on one of the most important building blocks of distributed systems, namely the problem of agreement between different nodes (also called the consensus problem.) The project proposes a design of a new consensus protocol that, unlike existing consensus protocols, is edge-aware and thus enables preserving consensus and fault-tolerance while achieving the low-latency performance enabled by edge-awareness. The second research challenge is building edge data management systems that react efficiently to user mobility. The project proposes augmenting consensus protocols with a mobility component that enables handling user mobility efficiently while preserving consensus and fault-tolerance.Large sectors of business and industry, in addition to the modern style of living, increasingly rely on data-intensive Internet and cloud applications. This project aims to advance the data and system infrastructure for these applications. The project will also provide the opportunity for undergraduate and graduate students to learn and work on fundamental data management systems research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.