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beavergram/backend/migrations/versions/c1f6b3d84a92_hot_path_indexes.py
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1.2 KiB
Python

"""hot path indexes
Revision ID: c1f6b3d84a92
Revises: b9e4d1a70c26
Create Date: 2026-08-06 12:00:00.000000
"""
from collections.abc import Sequence
from alembic import op
revision: str = "c1f6b3d84a92"
down_revision: str | None = "b9e4d1a70c26"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None
def upgrade() -> None:
op.execute(
"CREATE INDEX ix_messages_chat_date ON messages "
"(account_id, chat_id, date DESC, message_id DESC)"
)
op.execute("CREATE INDEX ix_avatars_owner ON avatars (account_id, owner_id)")
op.execute("CREATE INDEX ix_media_message ON media (account_id, message_id)")
op.execute(
"CREATE INDEX ix_chat_history_chat_ts ON chat_history "
"(account_id, chat_id, ts DESC)"
)
op.execute(
"CREATE INDEX ix_read_receipts_chat ON read_receipts "
"(account_id, chat_id, kind, message_id DESC)"
)
def downgrade() -> None:
op.execute("DROP INDEX IF EXISTS ix_read_receipts_chat")
op.execute("DROP INDEX IF EXISTS ix_chat_history_chat_ts")
op.execute("DROP INDEX IF EXISTS ix_media_message")
op.execute("DROP INDEX IF EXISTS ix_avatars_owner")
op.execute("DROP INDEX IF EXISTS ix_messages_chat_date")