Scalable datastore for metrics, events, and real-time analytics https://influxdata.com

InfluxDB   

An Open-Source Time Series Database

InfluxDB is an open source time series database with no external dependencies. It's useful for recording metrics, events, and performing analytics.

Features

• Built-in HTTP API so you don't have to write any server side code to get up and running.
• Data can be tagged, allowing very flexible querying.
• SQL-like query language.
• Simple to install and manage, and fast to get data in and out.
• It aims to answer queries in real-time. That means every data point is indexed as it comes in and is immediately available in queries that should return in < 100ms.

Installation

We recommend installing InfluxDB using one of the pre-built packages. Then start InfluxDB using:

• service influxdb start if you have installed InfluxDB using an official Debian or RPM package.
• systemctl start influxdb if you have installed InfluxDB using an official Debian or RPM package, and are running a distro with systemd. For example, Ubuntu 15 or later.
• $GOPATH/bin/influxd if you have built InfluxDB from source.

Getting Started

Create your first database

curl -XPOST 'http://localhost:8086/query' --data-urlencode "q=CREATE DATABASE mydb"

Insert some data

curl -XPOST 'http://localhost:8086/write?db=mydb' \
-d 'cpu,host=server01,region=uswest load=42 1434055562000000000'

curl -XPOST 'http://localhost:8086/write?db=mydb' \
-d 'cpu,host=server02,region=uswest load=78 1434055562000000000'

curl -XPOST 'http://localhost:8086/write?db=mydb' \
-d 'cpu,host=server03,region=useast load=15.4 1434055562000000000'

Query for the data

curl -G http://localhost:8086/query?pretty=true --data-urlencode "db=mydb" \
--data-urlencode "q=SELECT * FROM cpu WHERE host='server01' AND time < now() - 1d"

Analyze the data

curl -G http://localhost:8086/query?pretty=true --data-urlencode "db=mydb" \
--data-urlencode "q=SELECT mean(load) FROM cpu WHERE region='uswest'"

Documentation

• Read more about the design goals and motivations of the project.
• Follow the getting started guide to learn the basics in just a few minutes.
• Learn more about InfluxDB's key concepts.

from  https://github.com/influxdata/influxdb

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可伸缩的数据库，使用场景主要用来存储测量数据，事件点击以及其他等实时分析数据，用来做监控,性能很不错。