Dachi: A networked querying system for industrial Internet of Things applications

Sending all the industrial data to cloud may not be best suited for all Industrial Internet of Things applications. Shipping high-resolution and high frequency (millions/sec) industrial time-series data from thousands of devices may be prohibitively expensive or just infeasible. In such scenarios, it may be better to post targeted queries to the data sources/concentrators across the industrial devices, plants and clouds' networked hierarchy. Hence, in this paper, we propose Dachi, a service that enables on-demand networked querying of data. We present investigations into network topology formation, relaying/broadcast of queries when the destination is known or unknown, management and propagation of routing information distributed across nodes, and nodes crashing, joining or leaving the network by an implementation of the Dachi service.