以简单、易用、高性能为目标、开源的时序数据库，支持Linux和Windows， Time Series Database

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Database pinusdb
Overview

松果时序数据库(pinusdb)

松果时序数据库是一款针对中小规模（设备数少于10万台，每天产生的数据量少于10亿条）场景设计的时序数据库。以简单、易用、高性能为设计目标。使用SQL语句进行交互，拥有极低的学习、使用成本, 提供了丰富的功能、较高的性能。
我们的目标是成为最简单、易用、健壮的单机时序数据库。

1. 文档

1.1 使用手册

松果时序数据库-用户手册

1.2 二次开发

目前松果时序数据库提供c/c++ SDK, .Net SDK, jdbc 驱动，未来还会支持restful及更多的二次开发接口。
松果时序数据库-C/C++_SDK
符合ADO.NET标准的.NET_SDK
松果时序数据库-.Net_SDK
松果时序数据库-JDBC_SDK

1.3 部署配置

松果时序数据库-Windows安装部署
松果时序数据库-管理工具使用手册

1.4 内部设计

1.5 其他文档

松果时序数据库-最佳实践

2. 性能

在i3-7100， 8G 内存，1TB HDD windows server 2016 环境下，每条数据8个字段，达到每秒20万条数据写入。 最高数据扫描、统计达到5000万条每秒。 历史数据整理后压缩，每个设备的数据顺序存放，极大提供数据查询性能。

3. 压缩

松果时序数据库先将整数、浮点数按照差值压缩，然后将数据块以zlib压缩，极大提高压缩率。 不仅如此，我们还提供将浮点数按倍数放大后存储为整数，从而提高浮点数的压缩率。用户使用时以浮点数使用即可。
real2 -> 倍数100， 取值范围[-999,999,999.99 ~ +999,999,999.99]
real3 -> 倍数1000， 取值范围[-999,999,999.999 ~ +999,999,999.999]
real4 -> 倍数10000， 取值范围[-999,999,999.9999 ~ +999,999,999.9999]
real6 -> 倍数1000000， 取值范围[-999,999,999.999999 ~ +999,999,999.999999]

4. 容量

在松果时序数据库中，每个表每天的数据存储为一个文件，超过写入时间窗口的文件会被压缩。 所以，数据容量仅限于服务器存储的容量，并且在大容量下还能保持极高的数据读取性能。
并且，用户可以对数据文件进行管理（分离、附加、删除）等操作，方便对数据进行备份。

5. 数据安全性

数据写入松果时序数据库中，首先会写commit日志，commit日志每3秒或写满64KB会刷一次磁盘，所以意外宕机，或服务器断电后只会丢失较少的数据。 松果时序数据库写数据文件时使用doublewrite，保证写入数据页时发送断电数据文件和数据页也不会损坏。

交流

若您需要帮助或希望给我们反馈信息，请提交Issue或发送邮件到: [email protected]

赞助

松果时序数据库所有功能都开源，您可以免费使用。由于产品的更新、升级也需要资金，所以我们提供如下的收费服务，若您有需要可以联系我们：

  1. 如果您有需要使用时序数据库产品的项目，我们可以给您提供技术方案的咨询等。
  2. 如果您正在使用松果时序数据库的产品，我们可以给您提供技术支持、维护、升级等。
  3. 如果您想了解我们数据库内部的实现原理，我们可以给您提供对应的培训。
  4. 如果您的需求比较特别，我们可以为您提供数据库的定制服务。

当然，如果您觉得我们的产品不错，想鼓励一下，希望我们继续更新、升级，也可以通过微信扫码打赏来支持一下，就当请我们喝杯咖啡 : )

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