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杂七杂八的,随手记录。

Adaptive Range Filters for Cold Data: Avoiding Trips to Siberia

本文为摘录(或转载),侵删,原文为: attachments/pdf/f/p1714-kossmann.pdf

对目前的架构来讲,和 粗糙索引 作用重叠。。

1 ABSTRACT

  • ARF: Adaptive Range Filter, 自适应范围过滤器
  • ARF is for Range queries, while
  • BloomFilter is for Point queries

2 INTRODUCTION

3 APPLICATION EXAMPLE

3.1 Project Siberia

  • Siberia 是 Hekaton 项目用于管理冷数据的一个项目
    • Hekaton 则是 SQL Server 套件中的内存数据库
  • 查询处理

ByteHTAP: ByteDance’s HTAP System with High Data Freshness and Strong Data Consistency

Chimp: Efficient Lossless Floating Point Compression for Time Series Databases

本文为摘录(或转载),侵删,原文为: attachments/pdf/1/p3058-liakos.pdf

1 ABSTRACT

  • 时序数据难以高效存储,导致存储代价高昂。

Coping with the TCP TIME-WAIT state on busy Linux servers

本文为摘录(或转载),侵删,原文为: -https://draveness.me/whys-the-design-tcp-time-wait/ -https://vincent.bernat.ch/en/blog/2014-tcp-time-wait-state-linux#summary

1 TL;DR

  • 不用启用 net.ipv4.tcp_tw_recycle , 该选项已在 Linux4.12 废弃
  • 多数情况下, TIME-WAIT 状态的 socket 无害

2 About the TIME-WAIT state

2.1 TCP state diagram

http://tcpipguide.com/free/t_TCPOperationalOverviewandtheTCPFiniteStateMachineF-2.htm

Performance of 10 G Ethernet Using Commodity Hardware

SQLite: Past, Present, and Future

Table of Contents

本文为摘录(或转载),侵删,原文为: attachments/pdf/2/p3535-gaffney.pdf

1 INTRODUCTION

  • SQLite is embedded in the process of the host application

  • Instead of communicating with a database server across process boundaries, applications manage a SQLite database by calling SQLite library functions

  • several characteristics combine to make SQLite useful in a broad range of scenario:

Velox: Meta’s Unified Execution Engine

本文为摘录(或转载),侵删,原文为: attachments/pdf/8/p3372-pedreira.pdf

1 ABSTRACT

Velox:

  • C++ database acceleration library

  • 用来:

    • 构建执行引擎
      • 应对复杂数据类型
    • 增强数据管理系统 (enhance data management system)
  • 倚赖:

Velox: Meta’s Unified Execution Engine

本文为摘录(或转载),侵删,原文为: attachments/pdf/8/p3372-pedreira.pdf

1 ABSTRACT

Velox:

  • C++ database acceleration library

  • 用来:

    • 构建执行引擎
      • 应对复杂数据类型
    • 增强数据管理系统 (enhance data management system)
  • 倚赖: