improve docker compose setup

alembic/env.py

@@ -1,4 +1,4 @@
-"""Alembic env.py — подключение к БД через Settings."""
+# Alembic env.py — подключение к БД через Settings.
 
 import os
 import sys
@@ -27,7 +27,7 @@ target_metadata = Base.metadata
 
 
 def run_migrations_offline() -> None:
-    """Run migrations in 'offline' mode."""
+    # Run migrations in 'offline' mode.
     url = config.get_main_option("sqlalchemy.url")
     context.configure(
         url=url,
@@ -40,7 +40,7 @@ def run_migrations_offline() -> None:
 
 
 def run_migrations_online() -> None:
-    """Run migrations in 'online' mode."""
+    # Run migrations in 'online' mode.
     connectable = engine_from_config(
         config.get_section(config.config_ini_section, {}),
         prefix="sqlalchemy.",

alembic/versions/002_add_indexes.py

@@ -0,0 +1,47 @@
+"""Add performance indexes for growing database
+
+Revision ID: 002_add_indexes
+Revises: 001_initial
+Create Date: 2026-04-09
+"""
+from typing import Sequence, Union
+
+from alembic import op
+
+revision: str = "002_add_indexes"
+down_revision: Union[str, None] = "001_initial"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # cars: ускорение фильтрации по бренду в API и статистике
+    op.create_index("ix_cars_brand", "cars", ["brand"])
+
+    # cars: составной индекс бренд+модель для комбинированных фильтров
+    op.create_index("ix_cars_brand_model", "cars", ["brand", "model"])
+
+    # cars: ускорение фильтрации по году (year_min/year_max)
+    op.create_index("ix_cars_year", "cars", ["year"])
+
+    # cars: ускорение фильтрации по статусу продажи
+    op.create_index("ix_cars_is_sold", "cars", ["is_sold"])
+
+    # cars: ускорение сортировки ORDER BY last_seen_at DESC (пагинация)
+    op.create_index("ix_cars_last_seen_at", "cars", ["last_seen_at"])
+
+    # images: ускорение JOIN/DELETE по car_id (критично при upsert)
+    op.create_index("ix_images_car_id", "images", ["car_id"])
+
+    # sync_runs: ускорение поиска stale runs по статусу
+    op.create_index("ix_sync_runs_status", "sync_runs", ["status"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_sync_runs_status", table_name="sync_runs")
+    op.drop_index("ix_images_car_id", table_name="images")
+    op.drop_index("ix_cars_last_seen_at", table_name="cars")
+    op.drop_index("ix_cars_is_sold", table_name="cars")
+    op.drop_index("ix_cars_year", table_name="cars")
+    op.drop_index("ix_cars_brand_model", table_name="cars")
+    op.drop_index("ix_cars_brand", table_name="cars")