Refactor prune workers to batch by day #1016
Merged
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Improves pruning query performance by iterating the backlog oldest-first. Previously, pruning would very often "stall" on larger accounts, effectively orphaning older logs due to the exec timeout. This change reworks backlog iteration to process one day at a time, starting from the oldest, ensuring that older logs are eventually pruned even with newer logs pouring in from the large accounts. In addition to resolving the "stall," it should also improve batch query performance.