perf(db): add slow-query tracing and composite indexes

db/migrations.py

@@ -73,6 +73,7 @@ def _get_migration_steps():
         (16, _migrate_to_v16),
         (17, _migrate_to_v17),
         (18, _migrate_to_v18),
+        (19, _migrate_to_v19),
     ]
 
 
@@ -860,3 +861,22 @@ def _migrate_to_v18(conn):
     )
 
     conn.commit()
+
+
+
+def _migrate_to_v19(conn):
+    """迁移到版本19 - 报表与调度查询复合索引优化"""
+    cursor = conn.cursor()
+
+    index_statements = [
+        "CREATE INDEX IF NOT EXISTS idx_users_status_created_at ON users(status, created_at)",
+        "CREATE INDEX IF NOT EXISTS idx_task_logs_status_created_at ON task_logs(status, created_at)",
+        "CREATE INDEX IF NOT EXISTS idx_user_schedules_enabled_next_run ON user_schedules(enabled, next_run_at)",
+        "CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_status_created_at ON bug_feedbacks(status, created_at)",
+        "CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_user_created_at ON bug_feedbacks(user_id, created_at)",
+    ]
+
+    for statement in index_statements:
+        cursor.execute(statement)
+
+    conn.commit()

db/schema.py

@@ -364,6 +364,7 @@ def ensure_schema(conn) -> None:
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_users_vip_expire ON users(vip_expire_time)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_users_email ON users(email)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_users_created_at ON users(created_at)")
+    cursor.execute("CREATE INDEX IF NOT EXISTS idx_users_status_created_at ON users(status, created_at)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_login_fingerprints_user ON login_fingerprints(user_id)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_login_ips_user ON login_ips(user_id)")
 
@@ -392,6 +393,7 @@ def ensure_schema(conn) -> None:
 
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_task_logs_user_id ON task_logs(user_id)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_task_logs_status ON task_logs(status)")
+    cursor.execute("CREATE INDEX IF NOT EXISTS idx_task_logs_status_created_at ON task_logs(status, created_at)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_task_logs_created_at ON task_logs(created_at)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_task_logs_source ON task_logs(source)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_task_logs_source_created_at ON task_logs(source, created_at)")
@@ -400,6 +402,8 @@ def ensure_schema(conn) -> None:
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_user_id ON bug_feedbacks(user_id)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_status ON bug_feedbacks(status)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_created_at ON bug_feedbacks(created_at)")
+    cursor.execute("CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_status_created_at ON bug_feedbacks(status, created_at)")
+    cursor.execute("CREATE INDEX IF NOT EXISTS idx_bug_feedbacks_user_created_at ON bug_feedbacks(user_id, created_at)")
 
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_announcements_active ON announcements(is_active)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_announcements_created_at ON announcements(created_at)")
@@ -408,6 +412,7 @@ def ensure_schema(conn) -> None:
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_user_schedules_user_id ON user_schedules(user_id)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_user_schedules_enabled ON user_schedules(enabled)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_user_schedules_next_run ON user_schedules(next_run_at)")
+    cursor.execute("CREATE INDEX IF NOT EXISTS idx_user_schedules_enabled_next_run ON user_schedules(enabled, next_run_at)")
     # 复合索引优化
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_user_schedules_user_enabled ON user_schedules(user_id, enabled)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_schedule_execution_logs_schedule_id ON schedule_execution_logs(schedule_id)")

db/tasks.py

@@ -83,8 +83,8 @@ def _build_task_logs_where_sql(
     if source_filter:
         source_filter = str(source_filter or "").strip()
         if source_filter == "user_scheduled":
-            where_clauses.append("tl.source LIKE ? ESCAPE '\\\\'")
-            params.append("user_scheduled:%")
+            where_clauses.append("tl.source >= ? AND tl.source < ?")
+            params.extend(["user_scheduled:", "user_scheduled;"])
         elif source_filter.endswith("*"):
             prefix = source_filter[:-1]
             safe_prefix = sanitize_sql_like_pattern(prefix)