perf(db): Reuse cursors in the Latest/HistoricalStateProviders #20519
+222
−37
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This PR introduces a
ReusableCursortype which automatically returns a cursor to a Cell on Drop. By holding a Cell for each table type we are able to reuse cursors in the state providers.I wanted to make this even more generic and automatic, so that we automatically reuse dropped cursors on every Tx, but doing so is a bigger lift. This should at least get us something useful.
Closes #20492