Page History

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• Suitable for writing historical events directly to the database or writing historical events directly to the tag
• Real-time data is written to the storage provider on each tag change event whilst the tag quality is Good
• Real-time data is written to the storage provider on the Max Time Between Samples interval if no tag change events whilst the tag quality is Good
• Historical data is written to the storage provider or tag using the timestamp associated with the historical data 
  • When the Max Time Between Samples > 0, there will be no inserts during a history flush as the tag updates occur too quickly.
  • Handles historical metrics flushed from the Edge that have very high resolution; e.g., the historical metrics have timestamps 1 ms apart for a single tag

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• Suitable only for writing historical events directly to the database
• Real-time data is written to the storage provider on the Sample Rate whilst the tag quality is Good
• Historical data is written to the storage provider using the timestamp associated with the historical data
  • When the Max Time Between Samples inserts > 0, there will not be inserted into the middle of historical databe no inserts during a history flush as the tag updates occur too quickly

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backfill backfill

Ignition Allow Back-fill Data

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