报告题目：BigchainDB：A Scalable Blockchain Database

报 告 人：孙凯俐

报告时间：2018年1月10日（周三） 下午 2:00

报告地点：贵州大学北校区博学楼603室

报告内容摘要：

This paper describes BigchainDB. BigchainDB fills a gap in the decentralization ecosystem: a decentralized database, at scale. It points to performance of 1 million writes per second throughput, storing petabytes of data, and sub-second latency. The BigchainDB design starts with a distributed database (DB),  and through a set of innovations adds blockchain characteristics: decentralized control, immutability, and creation & movement of digital assets. BigchainDB inherits characteristics of modern distributed databases: linear scaling in throughput and capacity with the number of nodes, a fullfeatured NoSQL query language, efficient querying, and permissioning. Being built on an existing distributed DB, it also inherits enterprise-hardened code for most of its codebase. Scalable capacity means that legally binding contracts and certificates may be stored directly on the blockchain database. The permissioning system enables configurations ranging from private  enterprise blockchain databases to open, public blockchain databases.

BigchainDB is complementary to decentralized processing platforms like Ethereum, and decentralized file systems like InterPlanetary File System (IPFS). This paper describes technology perspectives that led to the BigchainDB design: traditional blockchains, distributed databases, and a case study of the domain name system (DNS). We introduce a concept called blockchain pipelining, which is key to scalability when adding blockchain-like characteristics to the distributed DB. We present a thorough description of BigchainDB, an analysis of latency, and preliminary experimental results. The paper concludes with a description of use cases.