diff --git a/main.py b/main.py
index 6196593..f9eeac8 100644
--- a/main.py
+++ b/main.py
@@ -9,8 +9,9 @@ import datetime
 from requests import RequestException
 from DB import DBVidcon
 from dateutil import parser as date_parser
+import copy
+from threading import Lock
 
-batch = str(int(time.time()))
 db = DBVidcon()
 MACHINE_ID = None
 MAX_WORKERS = 10
@@ -82,7 +83,8 @@ headers1 = {
     'x-dm-visit-id': '1745971699160',
     'x-dm-visitor-id': '64633D03065F4186AD0B027CF795EF0F',
 }
-
+_headers_cache = None  # 保存最近一次成功的 headers
+_cache_lock = Lock()
 Gproxies = None
 
 
@@ -120,12 +122,12 @@ def get_proxies(g):
     return proxies
 
 
-def post_with_retry(url, json_payload=None, data=None, headers=None, proxies=None,
+def post_with_retry(url, proxy_name, json_payload=None, data=None, headers=None,
                     retries=5, timeout=10, backoff_factor=2, verbose=True):
     token_refreshed = False
     for attempt in range(1, retries + 1):
         try:
-            proxy_str = db.get_proxy(Gproxies)
+            proxy_str = db.get_proxy(proxy_name)
 
             proxies = {"http": proxy_str, "https": proxy_str}
 
@@ -154,7 +156,7 @@ def post_with_retry(url, json_payload=None, data=None, headers=None, proxies=Non
             if not token_refreshed:
                 if verbose:
                     print("[post_with_retry] 刷新 token 后再试")
-                gettoken()
+                gettoken(proxy_name)
                 token_refreshed = True
                 continue
             if attempt == retries:
@@ -168,7 +170,8 @@ def post_with_retry(url, json_payload=None, data=None, headers=None, proxies=Non
             time.sleep(sleep_time)
 
 
-def gettoken():
+def gettoken(proxy, r=2):
+    global _headers_cache
     headers = {
         'Accept': '*/*',
         'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6',
@@ -186,7 +189,6 @@ def gettoken():
         'sec-ch-ua-mobile': '?0',
         'sec-ch-ua-platform': '"Windows"',
     }
-
     u = uuid.uuid4()
     uuid_with_dash = str(u)
     uuid_no_dash = u.hex
@@ -199,20 +201,32 @@ def gettoken():
         'visitor_id': uuid_with_dash,
     }
     try:
-        # proxy_str = db.get_proxy(Gproxies)
-        proxy_str = db.get_proxy(Gproxies)
+        proxy_str = db.get_proxy(proxy)
         url = 'https://graphql.api.dailymotion.com/oauth/token'
         response = requests.post(url, headers=headers, data=data, proxies={"http": proxy_str, "https": proxy_str})
         token = response.json()['access_token']
-        headers1['authorization'] = "Bearer " + token
-        headers1['x-dm-visit-id'] = str(int(time.time() * 1000))
-        headers1['x-dm-visitor-id'] = uuid_no_dash
+        copy_headers = copy.deepcopy(headers1)
+        copy_headers['authorization'] = "Bearer " + token
+        copy_headers['x-dm-visit-id'] = str(int(time.time() * 1000))
+        copy_headers['x-dm-visitor-id'] = uuid_no_dash
+        with _cache_lock:
+            _headers_cache = copy_headers
+        return copy_headers
     except Exception as e:
-        print(str(e))
-        pass
+        print("[gettoken] 失败:", e)
+        if r > 0:
+            time.sleep(5)
+            return gettoken(proxy, r - 1)
+        else:
+            with _cache_lock:
+                if _headers_cache:
+                    print("[gettoken] 用缓存 headers 兜底")
+                    return copy.deepcopy(_headers_cache)
+            # 仍然没有 → 返回模板（没有 Auth）
+            return copy.deepcopy(headers1)
 
 
-def get_searchInfo(keyword, level):
+def get_searchInfo(keyword, level, headers):
     video_list = []
     max_page = 2
     limit = 30
@@ -568,7 +582,7 @@ def get_searchInfo(keyword, level):
         response = post_with_retry(
             "https://graphql.api.dailymotion.com/",
             json_payload=data,
-            headers=headers1,
+            headers=headers,
             proxies=None
         )
 
@@ -610,6 +624,28 @@ def get_searchInfo(keyword, level):
     return video_list
 
 
+proxiesdict = db.get_proxy_agent_dict()
+
+
+def search_worker(payload, kitem):
+    try:
+        gproxies = proxiesdict[kitem['rn']]
+        header = gettoken(gproxies)
+
+        v_list = get_searchInfo(kitem['keyword'], kitem['level'], header)
+        if not v_list:
+            for i in range(2):
+                time.sleep(i * 5)
+                v_list = get_searchInfo(kitem['keyword'], kitem['level'])
+                if v_list:
+                    break
+                time.sleep(2)
+
+        return payload, kitem, v_list
+    except Exception as e:
+        raise RuntimeError(f"{kitem['keyword']} 处理失败: {e}") from e
+
+
 def integrate_data():
     while True:
         keywords, flag = db.item_keyword()
@@ -627,7 +663,7 @@ def integrate_data():
                     if not v_list:
                         for i in range(3):
                             time.sleep(i * 5)
-                            v_list = get_searchInfo(kitem["keyword"], kitem['level'])
+                            v_list = get_searchInfo(kitem["keyword"], kitem['level'], headers)
                             if v_list:
                                 break
                             time.sleep(2)
@@ -663,10 +699,12 @@ def integrate_data():
                     print(f"[异常] 处理关键词 {kitem['keyword']} 时发生错误，正在回滚...")
                     time.sleep(5)
                     remaining_payloads = [p for p, _ in keywords[index:]]
-                    if flag == 2:
-                        db.rollback(remaining_payloads)
+                    if flag == 0:
+                        db.rollback_l0(remaining_payloads)
                     elif flag == 1:
-                        db.rollback_records(remaining_payloads)
+                        db.rollback_l1(remaining_payloads)
+                    elif flag == 2:
+                        db.rollback_l2(remaining_payloads)
                     time.sleep(5)
                     break