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What is InfluxDB

InfluxDB is an efficient, reliable, and schema-less time-series database that can store time-series data.

It is a NoSQL database that provides high performance in terms of throughput, compression, and retention. InfluxDB can handle millions of time-stamped data points per second. InfluxDB includes support for real-time storage and analytics, IoT sensor data, and DevOps Monitoring. 

Some of the essential components of InfluxDB are :

Timestamp 

As InfluxDB is a time series database, time is an important essence in it. It stores time in the form of timestamps in the RFC3339 UTC format, which is yyyy-mm-ddThh:mm:ssZ. 

Fields 

InfluxDB has a concept of Fields that has components such as Fields keys of string types which are similar to the columns in RDBMS, Fields values that are the actual measured values of any types string, float, integer, or boolean and Fields set is a combination of Fields keys and values. 

Tags

InfluxDB has one optional component called Tags, which is similar to Fields except for the difference that both tag keys and tag values are of the typed string and hold metadata. So tags are used to add extra information about the measurements. 

Measurements 

Similar to the tables in RDBMS, InfluxDB has a concept of measurements that holds timestamps, fields, and tags together. It provides a way to describe the data in the set. 

Retention Policy 

The retention policy lets users define the period for which the data points should be stored in the database. 

Series 

Series is the collection of data points that have the same retention policy, measurement, and tag set. 

Points 

Similar to the rows in RDBMS, InfluxDB has a concept of Points that hold one or more fieldsets or tag sets in the same series with the same timestamp.
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