DataHub

the datahub module allows you to store data polled from connected devicehub devices with data storage enabled to store data, you must select the enable data store option for the device you want to store data for you have the option of storing data for a specific period to support analytics on the historic data in the retention hours field see docid\ pal6abpzbrimdu9lvgj30 to learn more litmus edge stores the polled data in a nosql timeseries database limitation when using datahub for storing data polled from connected devices, it's important to note the following limitations influxdb initialization for large databases takes a long time with high cpu utilization ensure the litmus edge device has sufficient computing resources datahub does not store custom formatted driver output like json or arrays to ensure efficient nosql timeseries database handling datahub handles string values differently than integers as a result, when querying stored data, the way string and integer values are handled can impact the structure and results of your query sample influx query for string values select "value str" from "temperature readings" where ("value str" field = 'pressure') and $timefilter for integer values select "value" from "temperature readings" where ("value" field = 555) and $timefilter you have the option of configuring an internal or external influxdb timeseries database the datahub ui is divided into three panes configuration toggle the timeseries database, change source type, and perform additional customizations db management expand a database view to display your connected devices, remove specific data storage for a connected device, and delete the timeseries database db users add and delete database users, reset a user's password, add privileges to a user, as well as view the user list next steps docid\ hqkh8inwjerydfcwbqpwt docid 6q04r99w1eamg j3q o48 docid\ wlj8wk o5mhltxwrip5ll