17 lines
641 B
Markdown
17 lines
641 B
Markdown
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order: 4
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# Begin-Block
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Each abci begin block call, the historical info will get stored and pruned
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according to the `HistoricalEntries` parameter.
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## Historical Info Tracking
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If the `HistoricalEntries` parameter is 0, then the `BeginBlock` performs a no-op.
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Otherwise, the latest historical info is stored under the key `historicalInfoKey|height`, while any entries older than `height - HistoricalEntries` is deleted.
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In most cases, this results in a single entry being pruned per block.
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However, if the parameter `HistoricalEntries` has changed to a lower value there will be multiple entries in the store that must be pruned.
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