diff --git a/UnitTestProject/Modules/DataProviderModule/Fr007FixingCacheTest.cs b/UnitTestProject/Modules/DataProviderModule/Fr007FixingCacheTest.cs
index 02eeb6ed..f4784bb2 100644
--- a/UnitTestProject/Modules/DataProviderModule/Fr007FixingCacheTest.cs
+++ b/UnitTestProject/Modules/DataProviderModule/Fr007FixingCacheTest.cs
@@ -101,5 +101,37 @@ namespace YLErp.Modules.DataProviderModule
 
             Assert.AreEqual(1, _loadCount, "稳态窗口内多次读取零重载（零查询）");
         }
+
+        [TestMethod]
+        public void TTL过期重载失败_保留旧快照不抛_且窗口内不重试()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out _), "先成功装载一次");
+            Assert.AreEqual(1, _loadCount);
+
+            Fr007FixingCache.LoadSnapshot = () => { _loadCount++; throw new InvalidOperationException("db down"); };
+            Fr007FixingCache.NowTicks = () => 1_000_000L + TimeSpan.FromMinutes(1).Ticks + 1; // TTL 过期 → 触发重载 → 失败
+
+            // 不抛：历史定盘不可变，命中继续走旧快照（异常会直接 fail 本用例）
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out var p), "重载失败应保留旧快照继续命中");
+            Assert.AreEqual(0.0142, p, 1e-12, "旧快照值不变");
+            Assert.AreEqual(2, _loadCount, "失败的重载尝试恰好一次");
+
+            Fr007FixingCache.TryGet(D2, out _); // TTL 时钟已被重置：窗口内不再重试（防重试风暴）
+            Assert.AreEqual(2, _loadCount, "失败后TTL窗口内不得反复重试全表SELECT");
+        }
+
+        [TestMethod]
+        public void 首次装载失败_miss不抛_窗口内不重试()
+        {
+            Fr007FixingCache.LoadSnapshot = () => { _loadCount++; throw new InvalidOperationException("db down"); };
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+
+            Assert.IsFalse(Fr007FixingCache.TryGet(D1, out _), "装载失败=空快照miss（调用方直查库兜底，新数据该响仍响）");
+            Assert.AreEqual(1, _loadCount);
+
+            Fr007FixingCache.TryGet(D1, out _);
+            Assert.AreEqual(1, _loadCount, "失败后TTL窗口内不重试");
+        }
     }
 }
diff --git a/YLErpDAL/Modules/DataProviderModule/EodPriceQueryService.cs b/YLErpDAL/Modules/DataProviderModule/EodPriceQueryService.cs
index c8a73b43..23e1dd26 100644
--- a/YLErpDAL/Modules/DataProviderModule/EodPriceQueryService.cs
+++ b/YLErpDAL/Modules/DataProviderModule/EodPriceQueryService.cs
@@ -156,7 +156,7 @@ namespace YLErp.Modules.DataProviderModule
                 return true;
 
             using var db = DbContextFactory.GetYLDbContext();
-            var data = db.eod_commodity_future_price.Where(x => x.ValueDate == valueDate && x.UnderlyingCode == underlyingCode).OrderByDescending(o => o.ValueDate).FirstOrDefault();
+            var data = db.eod_commodity_future_price.Where(x => x.ValueDate == valueDate && x.UnderlyingCode == underlyingCode).FirstOrDefault();
 
             if (data != null)
             {
@@ -164,6 +164,11 @@ namespace YLErp.Modules.DataProviderModule
                 // 利息腿计算直接作为 floatRate 参与 principal*(fixedRate+floatRate)/annualDays，无需再 ÷100。
                 price = data.ReferencePrice ?? 0;
 
+                // 快照漏掉的行(当日新发布/补录历史)直查命中——失效快照，下次访问整表重载后回到 O(1)，
+                // 否则该键在 TTL 窗口内每次读取都退化为点查。
+                if (underlyingCode == Fr007FixingCache.UnderlyingCode)
+                    Fr007FixingCache.Invalidate();
+
                 return true;
             }
 
diff --git a/YLErpDAL/Modules/DataProviderModule/Fr007FixingCache.cs b/YLErpDAL/Modules/DataProviderModule/Fr007FixingCache.cs
index 16d6ef20..8fa0d85f 100644
--- a/YLErpDAL/Modules/DataProviderModule/Fr007FixingCache.cs
+++ b/YLErpDAL/Modules/DataProviderModule/Fr007FixingCache.cs
@@ -80,11 +80,24 @@ namespace YLErp.Modules.DataProviderModule
             lock (_reloadLock)
             {
                 if (IsFresh()) return;
-                var snap = LoadSnapshot();
-                Volatile.Write(ref _snapshot, snap);
-                Volatile.Write(ref _loaded, true);
-                Volatile.Write(ref _loadedAt, NowTicks());
-                Volatile.Write(ref _snapVersion, Volatile.Read(ref _writeVersion));
+                try
+                {
+                    var snap = LoadSnapshot();
+                    Volatile.Write(ref _snapshot, snap);
+                    Volatile.Write(ref _loaded, true);
+                    Volatile.Write(ref _loadedAt, NowTicks());
+                    Volatile.Write(ref _snapVersion, Volatile.Read(ref _writeVersion));
+                }
+                catch (Exception ex)
+                {
+                    // 重载失败(如DB抖动)：保留旧快照并重置TTL时钟——历史定盘不可变，旧值依旧正确；
+                    // 同时防止每次读取都重试全表SELECT(重试风暴)。不抛：命中继续走旧快照，
+                    // miss照旧回退直查库，新数据取不到仍会在直查处响亮报错。
+                    // 注：版本失效(Invalidate)后的重载失败不会被TTL掩盖——版本不相等会持续重试直到成功。
+                    Volatile.Write(ref _loaded, true);
+                    Volatile.Write(ref _loadedAt, NowTicks());
+                    LogFactory.GetLogger("Fr007FixingCache").Error("FR007定盘缓存重载失败，沿用旧快照", ex);
+                }
             }
         }