influxdb tag和filed区别

In InfluxDB, tags and fields are two different concepts used to organize and store data.

Tags are key-value pairs that are attached to each data point in a measurement. They are used for indexing and filtering data. Tags are indexed, which means they are highly optimized for querying and filtering. Tags are typically used for dimensions or metadata that define the characteristics of the data, such as the source or location of the data. Tags are stored separately from the actual data points, which helps improve query performance.

Fields, on the other hand, are the actual data values associated with a measurement. They can be numeric, boolean, or string values. Fields are not indexed and are stored directly with each data point. Fields are used to store the quantitative or descriptive values that are of interest for analysis or visualization.

To summarize, tags are used for metadata and dimensions while fields store the actual data values. Tags are indexed and optimized for querying, while fields are not indexed and are directly associated with each data point.