Learning Center
Telemetry and edge data
Edge data is data produced on devices far from a data centre, such as sensor readings and app events. Learn how devices buffer, batch and order telemetry while offline, and how it reaches a backend over MQTT or other backhaul.
Basics
What is edge telemetry?Device-side events, metrics and logs, and how they get home through gaps.→What is edge computing?Doing the work near the data, from on-device code to computing in the access network.→What is backhaul?The link from a cell site, gateway or collector back to the core network.→Edge data vs cloud dataEdge data works offline and stays private; cloud data spans the fleet.→What is a telemetry event?The name, timestamp, attributes and source behind each record a device sends.→
Collecting offline
How do you collect device data without internet?Record first, bound the buffer, wait for a path, confirm before deleting.→What is a store-and-forward data logger?Measure, keep in memory, send when the link is up.→Why does batching save battery and bandwidth?Fewer, larger transfers let the radio sleep longer and repeat less overhead.→What is MQTT?The publish/subscribe protocol that carries readings from devices to a broker.→What is a time-series database?Databases organised around timestamps, series and retention.→What data should never leave the device?Keys, content, location and identifiers, and how to keep them local.→How do you sample telemetry?Head and tail sampling, adjusted counts, and when to aggregate instead.→What is observability for mobile apps?Crashes, hangs and performance from phones you do not control.→