Tag or Field: InfluxDB Schema Trade-off for High-Churn Identifiers
Storing a high-churn identifier such as a session ID or UUID in InfluxDB presents a schema trade-off when a dataset that passes local testing will face much higher series cardinality in production. Tags are indexed and become part of the series key, so filtering or grouping by a tag uses the index; fields are not indexed, so queries against them scan the mea
influxdb