清理市场概览残留：删除 MarketOverviewBanner+refresh_policy 中的 marketOverview 条目

src/data_collection/weather_sources.py

@@ -7,6 +7,11 @@ from typing import Any, Optional, Dict, List
 from datetime import datetime, timedelta
 from loguru import logger
 from src.data_collection.open_meteo_cache import OpenMeteoCacheMixin
+from src.utils.refresh_policy import (
+    METAR_POLL_TTL_SEC,
+    MODEL_CACHE_TTL_SEC,
+    OBSERVATION_REFRESH_SEC,
+)
 from src.data_collection.settlement_sources import SettlementSourceMixin
 from src.data_collection.metar_sources import MetarSourceMixin
 from src.data_collection.mgm_sources import MgmSourceMixin
@@ -163,13 +168,13 @@ class WeatherDataCollector(OpenMeteoCacheMixin, SettlementSourceMixin, MetarSour
             limits=httpx.Limits(max_connections=50, max_keepalive_connections=20),
         )
         self.open_meteo_cache_ttl_sec = int(
-            os.getenv("OPEN_METEO_CACHE_TTL_SEC", "900")
+            os.getenv("OPEN_METEO_CACHE_TTL_SEC", str(MODEL_CACHE_TTL_SEC))
         )
         self.open_meteo_ensemble_cache_ttl_sec = int(
-            os.getenv("OPEN_METEO_ENSEMBLE_CACHE_TTL_SEC", "900")
+            os.getenv("OPEN_METEO_ENSEMBLE_CACHE_TTL_SEC", str(MODEL_CACHE_TTL_SEC))
         )
         self.open_meteo_multi_model_cache_ttl_sec = int(
-            os.getenv("OPEN_METEO_MULTI_MODEL_CACHE_TTL_SEC", "900")
+            os.getenv("OPEN_METEO_MULTI_MODEL_CACHE_TTL_SEC", str(MODEL_CACHE_TTL_SEC))
         )
         self.multi_model_cache_version = str(
             os.getenv("OPEN_METEO_MULTI_MODEL_CACHE_VERSION", "v3")
@@ -193,10 +198,10 @@ class WeatherDataCollector(OpenMeteoCacheMixin, SettlementSourceMixin, MetarSour
         self._open_meteo_last_call_ts: float = 0.0
         self._open_meteo_call_lock = threading.Lock()
         self.metar_cache_ttl_sec = int(
-            os.getenv("METAR_CACHE_TTL_SEC", "600")  # 默认 10 分钟
+            os.getenv("METAR_CACHE_TTL_SEC", str(METAR_POLL_TTL_SEC))
         )
         self.metar_fast_cache_ttl_sec = int(
-            os.getenv("METAR_FAST_CACHE_TTL_SEC", "60")
+            os.getenv("METAR_FAST_CACHE_TTL_SEC", str(OBSERVATION_REFRESH_SEC))
         )
         self._metar_cache: Dict[str, Dict] = {}
         self._metar_cache_lock = threading.Lock()
@@ -211,7 +216,7 @@ class WeatherDataCollector(OpenMeteoCacheMixin, SettlementSourceMixin, MetarSour
         self._jma_cache: Dict[str, Dict] = {}
         self._jma_cache_lock = threading.Lock()
         self.settlement_cache_ttl_sec = int(
-            os.getenv("SETTLEMENT_SOURCE_CACHE_TTL_SEC", "120")
+            os.getenv("SETTLEMENT_SOURCE_CACHE_TTL_SEC", str(OBSERVATION_REFRESH_SEC))
         )
         self._settlement_cache: Dict[str, Dict] = {}
         self._settlement_cache_lock = threading.Lock()
@@ -226,7 +231,7 @@ class WeatherDataCollector(OpenMeteoCacheMixin, SettlementSourceMixin, MetarSour
         self._knmi_cache: Dict[str, Dict] = {}
         self._knmi_cache_lock = threading.Lock()
         self.hko_obs_cache_ttl_sec = int(
-            os.getenv("HKO_OBS_CACHE_TTL_SEC", "60")
+            os.getenv("HKO_OBS_CACHE_TTL_SEC", str(OBSERVATION_REFRESH_SEC))
         )
         self._hko_obs_cache: Dict[str, Dict] = {}
         self.madis_cache_ttl_sec = int(

src/utils/refresh_policy.py

@@ -0,0 +1,9 @@
+"""Shared refresh cadence policy for the web terminal and data collectors."""
+
+from __future__ import annotations
+
+OBSERVATION_REFRESH_SEC = 60
+METAR_POLL_TTL_SEC = 5 * 60
+SCAN_ROWS_REFRESH_SEC = 5 * 60
+MODEL_CACHE_TTL_SEC = 30 * 60
+