Haiming Zhu created IOTDB-3668:
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Summary: Tiered Storage
Key: IOTDB-3668
URL: https://issues.apache.org/jira/browse/IOTDB-3668
Project: Apache IoTDB
Issue Type: Task
Components: Core/Engine
Reporter: Haiming Zhu
With the rapid development of the Internet of Things, the volume of real-time
monitoring data generated by devices has increased rapidly. Besides, in order
to support industrial Internet applications, enterprises have gradually
increased their requirements for storing full historical data, which increases
storage costs.
However, the time series data application load has the characteristic of ’newly
written data has a higher probability of being queried, historical data has a
lower probability of being queried, and a little higher query delay is
acceptable’. To this end, a feasible way to reduce storage costs is to use
tiered physical storage media: group the storage medium by performance, price,
and capacity to form a hierarchy. Hot data is stored on the high-performance
storage medium layer and cold data is stored on the low-performance storage
media layer. When the nature of data changes, the migration mechanism is used
to migrate data to the appropriate storage layer. By optimizing the
distribution of data, databases can achieve the best read and write performance.
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