Data Gap Backfill¶
Overview¶
Data Gap Backfill (Edge - Cloud) means Edge retransmits historical data to Cloud when communication restored. This function avoids loss of device data due to communication failures.
Product Introduction¶
According to importance of measuring points and limited site resources, there are different processing logics. After the communication is restored, real-time data is sent first due to real-time priority strategy. The specific logic is as follows:
- Use the threshold to judge whether the data is real-time or historical data
- Set different processing methods during the interruption period for points: real-time topic, historical topic and discard
- Support lossless compression algorithm to further increase the data cache duration
- Guarantee the real-time priority principle
