dc3-tsdb is the pluggable time-series storage layer of IoT DC3. It defines a store-neutral port — the TsdbStore SPI with a sample model and capability set — plus one adapter per supported time-series database. The Data Center writes point values through the port and never through store-specific classes.

Modules

Module	Role
dc3-tsdb-core	store-neutral port: TsdbStore SPI, TsdbModel sample model, capabilities; zero store dependencies
dc3-tsdb-timescale	TimescaleDB adapter (default; embedded or standalone PostgreSQL)
dc3-tsdb-tdengine	TDengine adapter — supertable + per-series subtables over the REST/WS JDBC driver
dc3-tsdb-influxdb	InfluxDB 3 adapter — tags/fields over the documented v3 HTTP SQL and line-protocol APIs
dc3-tsdb-iotdb	Apache IoTDB adapter — tree paths root.dc3.* over the session API
dc3-tsdb-tck	store-neutral contract suite: an adapter that passes these tests is compliant

Selection

The active store is chosen by the dc3.tsdb.type property (default timescale). Only the selected adapter's auto-configuration is active.

dc3:
  tsdb:
    type: timescale

Store-specific settings use the dc3.tsdb..* prefix (e.g. dc3.tsdb.timescale.rollup.minute-keep-days).

Build and verify

mvn -s .mvn/settings.xml -q -f dc3-tsdb/pom.xml -DskipTests compile
mvn -s .mvn/settings.xml -f dc3-tsdb/pom.xml test

Store selection guides and trade-offs live in docs/tsdb-stores.md.