1. Measurement
The measurement name comes first and is like a table name; it groups related points.
measurementTyporithm · easy
Line Protocol
line-protocol-formatinfluxdbsyntaxtagsfields
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Line Protocol
Line Protocol is measurement,tagset fieldset timestamp — a comma joins the measurement to its indexed tags, spaces separate the three sections, and the nanosecond timestamp is optional.
InfluxDB ingests points as Line Protocol, a compact text format with three space-separated sections.
The measurement and its comma-joined tag set form the first token; tags are indexed strings used to filter and group.
After a space come the fields (the measured values), then an optional space and timestamp — nanoseconds unless you say otherwise.
01
A comma joins measurement to tags; no space between them.
02
Spaces separate measurement+tags, fields, and timestamp.
03
Tags are indexed strings; fields hold the values.
measurement,tag1=v1,tag2=v2 field1=10,field2=20 1700000000000000000Read the implementation
Connect each part of the code to the concept before you type.
2. Tag set
Tags follow the measurement after a comma, comma-separated, with no space — they are indexed string metadata.
,tag1=v1,tag2=v23. Field set
A single space separates tags from fields; fields are the actual values, comma-separated like tags.
field1=10,field2=204. Timestamp
An optional trailing timestamp after a space; nanoseconds by default. Omit it and the server stamps now.
1700000000000000000A complete learning loop
01
Understand
Read the concept map and follow the code breakdown.
02
Reconstruct
Type the implementation, repair mistakes and work through every recall exercise.
03
Verify
Use the final check without hints; revisit weak concepts in short practice sessions.