October 5, 2024
Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer ...
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February 4, 2024
Database
本文介绍两个多日志流相关的论文。
《Taurus: Lightweight Parallel Logging for In-Memory Database Management Systems》VLDB’20
CMU的一篇工作,这篇论文是面向单机存储引擎,假设硬件上有多个硬盘(即IOPS还有 ...
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February 1, 2024
Database
《PolarDB-SCC: A Cloud-Native Database Ensuring Low Latency for Strongly Consistent Reads》
很多数据库系统通过类似于binlog复制或者redo复制的方式提供RO节点来提升整个系统的读吞吐,RW节点上产生 ...
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January 1, 2024
Database
《PolarDB Serverless: A Cloud Native Database for Disaggregated Data Centers》
PolarDB架构PolarDB是存储计算分离的架构。底层是定制的PolarFS层,它是一个分布式的、支持一写多读的文件系统层。上层是My ...
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October 29, 2022
SQL
《The MemSQL Query Optimizer: A modern optimizer for real-time analystic in a distributed database》VLDB2016
MemSQL是面向内存优化的数据库,本身是shared-nothing架构。M ...
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October 11, 2022
Database
S2DB简介以前的MemSQL,shared-nothing架构的DBMS,分区混部,多副本HA,支持RO副本,支持code generation,支持跨域异步复制副本。另外也支持基于对象存储存放冷数据。
S2DB还可以做到交互式实时洞察和决策、高吞吐低延迟写入和在变动的数据上执行复杂低延迟 ...
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September 29, 2022
Cloud
这是一篇综述性质的文章,讲的是云计算环境的数据存储,这里先罗列下文章目录结构。
Introduction
Overview
A Comparison of Data-Intensive Networks
Terms and Definitions
Data-intensive Applic ...
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June 30, 2022
SQL
《An Overview of Query Optimization in Relational Systems》PODS 1998, Microsoft Research
优化器的输入是用户查询,负责生成一个高效的执行计划,优化过程是一个比较复杂的过程。
优化器主要包含三个部分:
Sea ...
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June 29, 2022
SQL
《Orca: A Modular Query Optimizer Architecture for Big Data》 SIGMOD 2014
Orca是Pivotal数据管理系列产品(包括 Pivotal Greenplum Database和Pivotal HAWQ)共用的优化器模块,面 ...
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June 28, 2022
SQL
《EFFICIENCY IN THE COLUMBIA DATABASE QUERY OPTIMIZER》 1998
这是Portland State University的硕士论文,作者是YONGWEN XU,相比Cascades论文的跳跃和晦涩,这篇可以说是很良心了。
Motivatio ...
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