perf(analytics): 5表 updated_at 窄索引——health MAX 消除全表扫(128MB buffer pool)

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-09-04 16:40:01 +08:00
parent 5b6a9bd35b
commit af05e58976
3 changed files with 105 additions and 0 deletions
@@ -0,0 +1,42 @@
+"""5 个新鲜度索引:create_all 建出 + 模型迁移双声明一致(防 autogenerate 反 DROP)。
+
+迁移侧(c3d4e5f6a7b8)由临时库 alembic upgrade head 验证;本文件锁定
+模型侧——Base.metadata 与 models.py __table_args__ 声明一旦被误删,
+create_all 建出的表就缺索引,此测试即红。
+"""
+from __future__ import annotations
+
+import sqlalchemy as sa
+from sqlalchemy.ext.asyncio import create_async_engine
+from sqlalchemy.pool import StaticPool
+
+from app.db.base import Base
+
+EXPECTED = {
+    "customer": "ix_customer_updated_at",
+    "chat_group": "ix_chat_group_updated_at",
+    "phone_call": "ix_phone_call_updated_at",
+    "media": "ix_media_updated_at",
+    "moments_post": "ix_moments_post_updated_at",
+}
+
+
+async def test_freshness_indexes_exist():
+    engine = create_async_engine(
+        "sqlite+aiosqlite:///:memory:",
+        poolclass=StaticPool,
+        connect_args={"check_same_thread": False},
+    )
+    try:
+        async with engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+            names = await conn.run_sync(
+                lambda sync_conn: {
+                    t: {ix["name"] for ix in sa.inspect(sync_conn).get_indexes(t)}
+                    for t in EXPECTED
+                }
+            )
+        for table, index in EXPECTED.items():
+            assert index in names[table], f"{table}.{index} missing"
+    finally:
+        await engine.dispose()