Consensus techniques coordinate several devices to concur on the system's status even in the face of outages or erratic communication, ensuring consistency in Internet of Things databases. The algorithms Paxos, Raft, and Byzantine Fault Tolerance (BFT) make sure that before a transaction is committed, all nodes agree on a single version of the truth, which helps ensure data consistency and integrity across dispersed nodes. This is essential for maintaining consistent and dependable data synchronisation in Internet of Things systems, where devices are frequently distributed and work in unstable situations.

We studied consensus processes, edge computing, and safe data transmission between connected devices in the IoT certification course I took.
Enroll:https://www.theiotacademy.co/iot-training