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a realtime platform with technology of spark,kafka,cassandra and redis

Java 51.30% HTML 5.76% CSS 14.97% JavaScript 19.20% Scala 8.77%

meteor's Introduction

流星实时数据开发平台

一个实时地干离线的活的流式计算平台!
基于hive sql,能进行任何复杂业务的sql运算。
UV,PV,新UV,跟踪类指标,在线时长、在线人数等等,都可以算。并且是0误差。

本平台已用每天几十亿行的数据验证通过。
交流QQ群:50319142

一、特点:

1、支持任何量级的0误差去重。
2、支持任何量级的大表join。
3、基于hive sql,支持创建中间表。
4、分钟级时延,一般为2分钟。(依赖于spark stream去kafka取数据的间隔频次)

二、使用技术

1、框架:kafka,spark-stream,spark-sql,redis集群,cassandra(可选),mysql
2、开发语言:java,scala

三、示意图

image

1、系统按固定间隔(如1min)去kafka拉数据,叫时间片数据。
2、系统将各时间片数据转换成表,基于hive sql进行运算。
3、系统对各时间片数据独立无干扰进行运算。每个表系统都会自动加上当前时间片的uuid。
4、通过函数:c_sum,c_distinct,c_join,c_max和c_min。利用redis或cassandra,对所有时间片进行全局运算。

四、SQL帮助文档

查看详情

五、demo安装示例

demo安装
demo示例

六、问题

查看详情

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