What is Line Protocol in InfluxDB?

Line Protocol is InfluxDB's text-based format for writing data points. It's the primary method for inserting data.

Syntax:

<measurement>[,<tag_key>=<tag_value>[,<tag_key>=<tag_value>]] <field_key>=<field_value>[,<field_key>=<field_value>] [<timestamp>]

Components:

• Measurement name (required)
• Tag set (optional, comma-separated)
• Field set (required, space-separated from tags)
• Timestamp (optional, defaults to current time)

Examples:

# Basic example
temperature value=23.5

# With tags and timestamp
temperature,location=office,sensor=A value=23.5,humidity=45 1465839830100400200

# Multiple fields
system,host=server01 cpu=80.0,memory=60.5,disk=45.2