diff --git a/elastic/documents.py b/elastic/documents.py
index d2f05c3..43d1577 100644
--- a/elastic/documents.py
+++ b/elastic/documents.py
@@ -48,12 +48,3 @@ class GlobalDocument(Document):
 
     class Django:
         model = ElasticNews
-
-
-@GLOBAL_INDEX.doc_type
-class AnalyticsDocument(Document):
-    overview = fields.TextField()
-    updated_at = fields.DateField()
-
-    class Django:
-        model = ElasticNews
diff --git a/elastic/es_connect.py b/elastic/es_connect.py
index 8c4693c..c0b1f3d 100644
--- a/elastic/es_connect.py
+++ b/elastic/es_connect.py
@@ -5,7 +5,7 @@ Django版本的ES连接和操作模块
 from elasticsearch import Elasticsearch
 from elasticsearch_dsl import connections
 import os
-from .documents import AchievementDocument, UserDocument, GlobalDocument, AnalyticsDocument
+from .documents import AchievementDocument, UserDocument, GlobalDocument
 from .indexes import ACHIEVEMENT_INDEX_NAME, USER_INDEX_NAME, GLOBAL_INDEX_NAME
 import hashlib
 import time
@@ -46,18 +46,10 @@ def create_index_with_mapping():
         # --- 3. 处理全局类型索引 ---
         if not es.indices.exists(index=GLOBAL_TYPES_INDEX_NAME):
             GlobalDocument.init()
-            AnalyticsDocument.init()
             default_types = ['软著', '专利', '奖状']
             doc = GlobalDocument(type_list=default_types)
             doc.meta.id = 'types'
             doc.save()
-            try:
-                a = AnalyticsDocument()
-                a.meta.id = 'overview'
-                a.overview = json.dumps({})
-                a.save()
-            except Exception:
-                pass
             print(f"✅ 创建索引 {GLOBAL_TYPES_INDEX_NAME} 并写入默认类型")
         else:
             try:
@@ -68,16 +60,6 @@ def create_index_with_mapping():
                 doc.meta.id = 'types'
                 doc.save()
                 print("ℹ️ 全局类型文档缺失，已补充默认类型")
-            try:
-                AnalyticsDocument.get(id='overview')
-            except Exception:
-                try:
-                    a = AnalyticsDocument()
-                    a.meta.id = 'overview'
-                    a.overview = json.dumps({})
-                    a.save()
-                except Exception:
-                    pass
 
         # --- 4. 创建默认管理员用户（可选：也可检查用户是否已存在）---
         # 这里简单处理：每次初始化都写入（可能重复），建议加唯一性判断
@@ -327,29 +309,7 @@ def search_by_any_field(keyword):
         print(f"模糊搜索失败: {str(e)}")
         return []
 
-def _read_analytics_overview():
-    try:
-        doc = AnalyticsDocument.get(id='overview')
-        payload = getattr(doc, 'overview', '') or ''
-        try:
-            return json.loads(payload) if payload else {}
-        except Exception:
-            return {}
-    except Exception:
-        return {}
-
-def _write_analytics_overview(data: dict):
-    try:
-        try:
-            doc = AnalyticsDocument.get(id='overview')
-        except Exception:
-            doc = AnalyticsDocument()
-            doc.meta.id = 'overview'
-        doc.overview = json.dumps(data, ensure_ascii=False)
-        doc.save()
-        return True
-    except Exception:
-        return False
+ANALYTICS_CACHE = {"data": None, "ts": 0}
 
 def _compute_hist(range_gte: str, interval: str, fmt: str):
     from elasticsearch_dsl import Search
@@ -387,16 +347,11 @@ def compute_analytics():
     }
 
 def get_analytics_overview(force: bool = False):
-    if force:
-        data = compute_analytics()
-        _write_analytics_overview(data)
-        return data
-    data = _read_analytics_overview()
-    if data:
-        return data
-    data = compute_analytics()
-    _write_analytics_overview(data)
-    return data
+    now_ts = time.time()
+    if force or ANALYTICS_CACHE["data"] is None or (now_ts - ANALYTICS_CACHE["ts"]) > 3600:
+        ANALYTICS_CACHE["data"] = compute_analytics()
+        ANALYTICS_CACHE["ts"] = now_ts
+    return ANALYTICS_CACHE["data"]
 
 def _seconds_until_hour(h: int):
     now = datetime.now()
diff --git a/elastic/management/__init__.py b/elastic/management/__init__.py
deleted file mode 100644
index 8d1c8b6..0000000
--- a/elastic/management/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
- 
diff --git a/elastic/management/commands/analyze_analytics.py b/elastic/management/commands/analyze_analytics.py
deleted file mode 100644
index 01019bc..0000000
--- a/elastic/management/commands/analyze_analytics.py
+++ /dev/null
@@ -1,8 +0,0 @@
-from django.core.management.base import BaseCommand
-from elastic.es_connect import create_index_with_mapping, get_analytics_overview
-
-class Command(BaseCommand):
-    def handle(self, *args, **options):
-        create_index_with_mapping()
-        get_analytics_overview(force=True)
-        self.stdout.write("analytics updated")
\ No newline at end of file