perf: index statistics.created_at for the prune range scan - #57
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The daily statistics:prune job scans WHERE created_at < ?; existing composite indexes all lead with url_id/project_id and can't serve a bare created_at range. Adds a standalone index + a regression test. Follow-up to the hardening package (#56). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
Follow-up to the hardening package (#56). The new daily
statistics:prunejob scansWHERE created_at < ?, but every existing index onstatisticsleads withurl_id/project_id(statistics_project_created_index,statistics_url_visitor_hash_created_index), so none can serve a barecreated_atrange — the prune would full-scan the table.Adds a standalone
statistics_created_at_indexoncreated_at, plus a regression test guarding it.Verification
StatisticsCreatedAtIndexTestpasses;PruneStatisticsTeststill green.🤖 Generated with Claude Code