diff --git a/backend/api/routes/system.py b/backend/api/routes/system.py
index 774be68..e277903 100644
--- a/backend/api/routes/system.py
+++ b/backend/api/routes/system.py
@@ -16,6 +16,9 @@ router = APIRouter(prefix="/api/system")
 
 LOG_GROUPS = ("error", "warning", "info")
 
+# 避免 Redis 异常刷屏（前端可能自动刷新）
+_last_logs_redis_err_ts: float = 0.0
+
 
 def _logs_prefix() -> str:
     return (os.getenv("REDIS_LOG_LIST_PREFIX", "ats:logs").strip() or "ats:logs")
@@ -249,7 +252,15 @@ def _get_redis_client_for_logs():
         client = redis.from_url(redis_url, **kwargs)
         client.ping()
         return client
-    except Exception:
+    except Exception as e:
+        # 把错误尽量打到 api.log（你现在看的文件）
+        global _last_logs_redis_err_ts
+        import time as _t
+
+        now = _t.time()
+        if now - _last_logs_redis_err_ts > 30:
+            _last_logs_redis_err_ts = now
+            logger.warning(f"日志模块 Redis 连接失败。REDIS_URL={os.getenv('REDIS_URL', '')} err={e}")
         return None
 
 
@@ -370,41 +381,51 @@ async def logs_overview(x_admin_token: Optional[str] = Header(default=None, alia
     if client is None:
         raise HTTPException(status_code=503, detail="Redis 不可用，无法读取日志概览")
 
-    cfg = _read_logs_config(client)
+    try:
+        cfg = _read_logs_config(client)
 
-    day = _beijing_yyyymmdd()
-    stats_prefix = _logs_stats_prefix()
+        day = _beijing_yyyymmdd()
+        stats_prefix = _logs_stats_prefix()
 
-    pipe = client.pipeline()
-    for g in LOG_GROUPS:
-        pipe.llen(_logs_key_for_group(g))
-    for g in LOG_GROUPS:
-        pipe.get(f"{stats_prefix}:{day}:{g}")
-    res = pipe.execute()
+        pipe = client.pipeline()
+        for g in LOG_GROUPS:
+            pipe.llen(_logs_key_for_group(g))
+        for g in LOG_GROUPS:
+            pipe.get(f"{stats_prefix}:{day}:{g}")
+        res = pipe.execute()
 
-    llen_vals = res[: len(LOG_GROUPS)]
-    added_vals = res[len(LOG_GROUPS) :]
+        llen_vals = res[: len(LOG_GROUPS)]
+        added_vals = res[len(LOG_GROUPS) :]
 
-    llen: Dict[str, int] = {}
-    added_today: Dict[str, int] = {}
-    for i, g in enumerate(LOG_GROUPS):
-        try:
-            llen[g] = int(llen_vals[i] or 0)
-        except Exception:
-            llen[g] = 0
-        try:
-            added_today[g] = int(added_vals[i] or 0)
-        except Exception:
-            added_today[g] = 0
+        llen: Dict[str, int] = {}
+        added_today: Dict[str, int] = {}
+        for i, g in enumerate(LOG_GROUPS):
+            try:
+                llen[g] = int(llen_vals[i] or 0)
+            except Exception:
+                llen[g] = 0
+            try:
+                added_today[g] = int(added_vals[i] or 0)
+            except Exception:
+                added_today[g] = 0
 
-    return {
-        "config": cfg,
-        "stats": {
-            "day": day,
-            "llen": llen,
-            "added_today": added_today,
-        },
-    }
+        return {
+            "config": cfg,
+            "stats": {
+                "day": day,
+                "llen": llen,
+                "added_today": added_today,
+            },
+            "meta": {
+                "redis_url": os.getenv("REDIS_URL", ""),
+                "keys": {g: _logs_key_for_group(g) for g in LOG_GROUPS},
+            },
+        }
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"logs_overview 失败: {e}", exc_info=True)
+        raise HTTPException(status_code=500, detail=f"logs_overview failed: {e}")
 
 
 @router.put("/logs/config")