Kyle Pope
e12687ca6f
Migration 054: three indexes on calendar_events table: - (calendar_id, start_datetime) for range queries - (parent_event_id) for recurrence bulk operations - (calendar_id, is_starred, start_datetime) for starred widget Dashboard: replaced correlated subquery with single materialized list fetch for user_calendar_ids in both /dashboard and /upcoming handlers — eliminates 2 redundant subquery evaluations per request. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
"""Add performance indexes to calendar_events
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Revision ID: 054
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Revises: 053
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"""
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from alembic import op
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revision = "054"
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down_revision = "053"
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def upgrade():
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# Covers range queries in dashboard today's events and events list
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op.create_index(
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"ix_calendar_events_calendar_start",
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"calendar_events",
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["calendar_id", "start_datetime"],
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)
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# Covers bulk DELETE on recurrence edit/regeneration and sibling lookups
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op.create_index(
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"ix_calendar_events_parent_event_id",
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"calendar_events",
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["parent_event_id"],
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)
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# Covers starred widget query (calendar_id + is_starred + start_datetime)
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op.create_index(
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"ix_calendar_events_calendar_starred_start",
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"calendar_events",
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["calendar_id", "is_starred", "start_datetime"],
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)
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def downgrade():
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op.drop_index("ix_calendar_events_calendar_starred_start", table_name="calendar_events")
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op.drop_index("ix_calendar_events_parent_event_id", table_name="calendar_events")
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op.drop_index("ix_calendar_events_calendar_start", table_name="calendar_events")
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