Write data to InfluxDB 3 Core
InfluxDB 3 Core is designed for high write-throughput and uses an efficient, human-readable write syntax called line protocol. InfluxDB is a schema-on-write database, meaning you can start writing data and InfluxDB creates the logical database, tables, and their schemas automatically, without any required intervention. Once InfluxDB creates the schema, it validates future write requests against the schema before accepting new data. Both new tags and fields can be added later as your schema changes.
InfluxDB 3 Core is optimized for recent data
InfluxDB 3 Core is optimized for recent data but accepts writes from any time period. The system persists data to Parquet files for historical analysis with InfluxDB 3 Enterprise or third-party tools. For extended historical queries and optimized data organization, consider using InfluxDB 3 Enterprise.
Line protocol
InfluxDB 3 Core accepts data in line protocol syntax. Line protocol consists of the following elements:
* Required* table: A string that identifies the table to store the data in.
tag set: Comma-delimited list of key value pairs, each representing a tag. Tag keys and values are unquoted strings. Spaces, commas, and equal characters must be escaped.
* field set: Comma-delimited list of key value pairs, each representing a field. Field keys are unquoted strings. Spaces and commas must be escaped. Field values can be one of the following types:
timestamp: Unix timestamp associated with the data. InfluxDB supports up to nanosecond precision.
For schema design recommendations, see InfluxDB schema design recomendations.
myTable, field1="v1",field2=1i
Construct line protocol
With a basic understanding of line protocol, you can now construct line protocol and write data to InfluxDB 3 Core. Consider a use case where you collect data from sensors in your home. Each sensor collects temperature, humidity, and carbon monoxide readings. To collect this data, use the following schema:
- table:
home- tags
room: Living Room or Kitchen
- fields
temp: temperature in °C (float)hum: percent humidity (float)co: carbon monoxide in parts per million (integer)
- timestamp: Unix timestamp in second precision
- tags
The following line protocol sample represents data collected hourly beginning at . These timestamps are dynamic and can be updated by clicking the icon in the bottom right corner.
Write data using the CLI
To quickly get started writing data, use the
influxdb3 write command.
Include the following:
--databaseoption that identifies the target database--tokenoption that specifies the token to use (unless theINFLUXDB3_AUTH_TOKENenvironment variable is already set)- Quoted line protocol data via standard input (stdin)
influxdb3 write \
--database DATABASE_NAME \
--token AUTH_TOKEN \
--precision s \
'home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1641024000
home,room=Kitchen temp=21.0,hum=35.9,co=0i 1641024000
home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1641027600
home,room=Kitchen temp=23.0,hum=36.2,co=0i 1641027600
home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1641031200
home,room=Kitchen temp=22.7,hum=36.1,co=0i 1641031200
home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1641034800
home,room=Kitchen temp=22.4,hum=36.0,co=0i 1641034800
home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1641038400
home,room=Kitchen temp=22.5,hum=36.0,co=0i 1641038400
home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1641042000
home,room=Kitchen temp=22.8,hum=36.5,co=1i 1641042000
home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1641045600
home,room=Kitchen temp=22.8,hum=36.3,co=1i 1641045600
home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1641049200
home,room=Kitchen temp=22.7,hum=36.2,co=3i 1641049200
home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1641052800
home,room=Kitchen temp=22.4,hum=36.0,co=7i 1641052800
home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1641056400
home,room=Kitchen temp=22.7,hum=36.0,co=9i 1641056400
home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1641060000
home,room=Kitchen temp=23.3,hum=36.9,co=18i 1641060000
home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1641063600
home,room=Kitchen temp=23.1,hum=36.6,co=22i 1641063600
home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1641067200
home,room=Kitchen temp=22.7,hum=36.5,co=26i 1641067200'
In the code samples, replace the following placeholders with your values:
Write data from a file
To write line protocol you have saved to a file, pass the --file option–for example, save the
sample line protocol to a file named sensor_data
and then enter the following command:
influxdb3 write \
--database DATABASE_NAME \
--token AUTH_TOKEN \
--precision s \
--accept-partial \
--file path/to/sensor_data
Replace the following placeholders with your values:
Other tools for writing data
There are many ways to write data to your InfluxDB 3 Core database, including:
- InfluxDB HTTP API: Recommended for batching and higher-volume write workloads.
- InfluxDB client libraries: Client libraries that integrate with your code to construct data as time series points and write the data as line protocol to your InfluxDB 3 Core database.
- Telegraf: A data collection agent with over 300 plugins for collecting, processing, and writing data.
For more information, see Write data to InfluxDB 3 Core.
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Support and feedback
Thank you for being part of our community! We welcome and encourage your feedback and bug reports for InfluxDB 3 Core and this documentation. To find support, use the following resources:
Customers with an annual or support contract can contact InfluxData Support. Customers using a trial license can email [email protected] for assistance.