diff --git a/api/chat.py b/api/chat.py
index 7badbfd..f539b72 100644
--- a/api/chat.py
+++ b/api/chat.py
@@ -17,6 +17,7 @@ import config
 import services.avatar
 import services.chat
 import services.translate
+import utils.async_io
 import utils.request
 
 logger = logging.getLogger(__name__)
@@ -41,6 +42,7 @@ class ContentType(enum.IntEnum):
 
 class FatalErrorType(enum.IntEnum):
     AUTH_CODE_ERROR = 1
+    TOO_MANY_RETRIES = 2
 
 
 def make_message_body(cmd, data):
@@ -215,7 +217,7 @@ class ChatHandler(tornado.websocket.WebSocketHandler):
             pass
 
         services.chat.client_room_manager.add_client(self.room_key, self)
-        asyncio.create_task(self._on_joined_room())
+        utils.async_io.create_task_with_ref(self._on_joined_room())
 
         self._refresh_receive_timeout_timer()
 
diff --git a/api/open_live.py b/api/open_live.py
index ba6bbe7..e0788e1 100644
--- a/api/open_live.py
+++ b/api/open_live.py
@@ -5,8 +5,8 @@ import hashlib
 import hmac
 import json
 import logging
-import random
 import re
+import uuid
 from typing import *
 
 import aiohttp
@@ -15,13 +15,17 @@ import tornado.web
 
 import api.base
 import config
+import services.open_live
+import utils.rate_limit
 import utils.request
 
 logger = logging.getLogger(__name__)
 
-START_GAME_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/start'
-END_GAME_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/end'
-GAME_HEARTBEAT_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/heartbeat'
+OPEN_LIVE_BASE_URL = 'https://live-open.biliapi.com'
+START_GAME_OPEN_LIVE_URL = OPEN_LIVE_BASE_URL + '/v2/app/start'
+END_GAME_OPEN_LIVE_URL = OPEN_LIVE_BASE_URL + '/v2/app/end'
+GAME_HEARTBEAT_OPEN_LIVE_URL = OPEN_LIVE_BASE_URL + '/v2/app/heartbeat'
+GAME_BATCH_HEARTBEAT_OPEN_LIVE_URL = OPEN_LIVE_BASE_URL + '/v2/app/batchHeartbeat'
 
 COMMON_SERVER_BASE_URL = 'https://chat.bilisc.com'
 START_GAME_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/start_game'
@@ -29,6 +33,8 @@ END_GAME_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/e
 GAME_HEARTBEAT_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/game_heartbeat'
 
 _error_auth_code_cache = cachetools.LRUCache(256)
+# 用于限制请求开放平台的频率
+_open_live_rate_limiter = utils.rate_limit.TokenBucket(8, 8)
 
 
 class TransportError(Exception):
@@ -50,7 +56,7 @@ async def request_open_live_or_common_server(open_live_url, common_server_url, b
     """如果配置了开放平台，则直接请求，否则转发请求到公共服务器的内部接口"""
     cfg = config.get_config()
     if cfg.is_open_live_configured:
-        return await _request_open_live(open_live_url, body)
+        return await request_open_live(open_live_url, body)
 
     try:
         req_ctx_mgr = utils.request.http_session.post(common_server_url, json=body)
@@ -63,7 +69,7 @@ async def request_open_live_or_common_server(open_live_url, common_server_url, b
         raise
 
 
-async def _request_open_live(url, body: dict) -> dict:
+async def request_open_live(url, body: dict, *, ignore_rate_limit=False) -> dict:
     cfg = config.get_config()
     assert cfg.is_open_live_configured
 
@@ -74,12 +80,16 @@ async def _request_open_live(url, body: dict) -> dict:
     else:
         auth_code = ''
 
+    # 频率限制，防止触发B站风控被下架
+    if not _open_live_rate_limiter.try_decrease_token() and not ignore_rate_limit:
+        raise BusinessError({'code': 4009, 'message': '接口访问限制', 'request_id': '0', 'data': None})
+
     body_bytes = json.dumps(body).encode('utf-8')
     headers = {
         'x-bili-accesskeyid': cfg.open_live_access_key_id,
         'x-bili-content-md5': hashlib.md5(body_bytes).hexdigest(),
         'x-bili-signature-method': 'HMAC-SHA256',
-        'x-bili-signature-nonce': str(random.randint(0, 999999999)),
+        'x-bili-signature-nonce': uuid.uuid4().hex,
         'x-bili-signature-version': '1.0',
         'x-bili-timestamp': str(int(datetime.datetime.now().timestamp())),
     }
@@ -137,6 +147,8 @@ def _validate_auth_code(auth_code):
 
 
 class _OpenLiveHandlerBase(api.base.ApiHandler):
+    _LOG_REQUEST = True
+
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.res: Optional[dict] = None
@@ -150,7 +162,8 @@ class _OpenLiveHandlerBase(api.base.ApiHandler):
             cfg = config.get_config()
             self.json_args['app_id'] = cfg.open_live_app_id
 
-        logger.info('client=%s requesting open live, cls=%s', self.request.remote_ip, type(self).__name__)
+        if self._LOG_REQUEST:
+            logger.info('client=%s requesting open live, cls=%s', self.request.remote_ip, type(self).__name__)
 
 
 class _PublicHandlerBase(_OpenLiveHandlerBase):
@@ -180,7 +193,7 @@ class _PrivateHandlerBase(_OpenLiveHandlerBase):
             raise tornado.web.HTTPError(501)
 
         try:
-            self.res = await _request_open_live(self._OPEN_LIVE_URL, self.json_args)
+            self.res = await request_open_live(self._OPEN_LIVE_URL, self.json_args)
         except TransportError:
             raise tornado.web.HTTPError(500)
         except BusinessError as e:
@@ -201,12 +214,22 @@ class _StartGameMixin(_OpenLiveHandlerBase):
             room_id = self.res['data']['anchor_info']['room_id']
         except (TypeError, KeyError):
             room_id = None
+        try:
+            game_id = self.res['data']['game_info']['game_id']
+        except (TypeError, KeyError):
+            game_id = None
         code = self.res['code']
-        logger.info('room_id=%s start game res: %s %s', room_id, code, self.res['message'])
+        logger.info(
+            'client=%s room_id=%s start game res: %s %s, game_id=%s', self.request.remote_ip, room_id,
+            code, self.res['message'], game_id
+        )
         if code == 7007:
             # 身份码错误
             # 让我看看是哪个混蛋把房间ID、UID当做身份码
-            logger.info('Auth code error! auth_code=%s', self.json_args.get('code', None))
+            logger.info(
+                'client=%s auth code error! auth_code=%s', self.request.remote_ip,
+                self.json_args.get('code', None)
+            )
 
 
 class StartGamePublicHandler(_StartGameMixin, _PublicHandlerBase):
@@ -226,13 +249,68 @@ class EndGamePrivateHandler(_PrivateHandlerBase):
     _OPEN_LIVE_URL = END_GAME_OPEN_LIVE_URL
 
 
-class GameHeartbeatPublicHandler(_PublicHandlerBase):
-    _OPEN_LIVE_URL = GAME_HEARTBEAT_OPEN_LIVE_URL
-    _COMMON_SERVER_URL = GAME_HEARTBEAT_COMMON_SERVER_URL
+class GameHeartbeatPublicHandler(_OpenLiveHandlerBase):
+    _LOG_REQUEST = False
+
+    async def post(self):
+        game_id = self.json_args.get('game_id', None)
+        if not isinstance(game_id, str) or game_id == '':
+            raise tornado.web.MissingArgumentError('game_id')
+
+        try:
+            self.res = await send_game_heartbeat_by_service_or_common_server(game_id)
+        except TransportError as e:
+            logger.error(
+                'client=%s game heartbeat failed, game_id=%s, error: %s', self.request.remote_ip, game_id, e
+            )
+            raise tornado.web.HTTPError(500)
+        except BusinessError as e:
+            # 因为B站的BUG，这里在9点和10点的高峰期会经常报重复请求的错误，但是不影响功能，先屏蔽掉
+            if e.code != 4004:
+                logger.info(
+                    'client=%s game heartbeat failed, game_id=%s, error: %s', self.request.remote_ip, game_id, e
+                )
+            self.res = e.data
+        self.write(self.res)
 
 
-class GameHeartbeatPrivateHandler(_PrivateHandlerBase):
-    _OPEN_LIVE_URL = GAME_HEARTBEAT_OPEN_LIVE_URL
+async def send_game_heartbeat_by_service_or_common_server(game_id):
+    cfg = config.get_config()
+    if cfg.is_open_live_configured:
+        return await services.open_live.send_game_heartbeat(game_id)
+    # 这里GAME_HEARTBEAT_OPEN_LIVE_URL没用，因为一定是请求公共服务器
+    return await request_open_live_or_common_server(
+        GAME_HEARTBEAT_OPEN_LIVE_URL, GAME_HEARTBEAT_COMMON_SERVER_URL, {'game_id': game_id}
+    )
+
+
+class GameHeartbeatPrivateHandler(_OpenLiveHandlerBase):
+    _LOG_REQUEST = False
+
+    async def post(self):
+        cfg = config.get_config()
+        if not cfg.is_open_live_configured:
+            raise tornado.web.HTTPError(501)
+
+        game_id = self.json_args.get('game_id', None)
+        if not isinstance(game_id, str) or game_id == '':
+            raise tornado.web.MissingArgumentError('game_id')
+
+        try:
+            self.res = await services.open_live.send_game_heartbeat(game_id)
+        except TransportError as e:
+            logger.error(
+                'client=%s game heartbeat failed, game_id=%s, error: %s', self.request.remote_ip, game_id, e
+            )
+            raise tornado.web.HTTPError(500)
+        except BusinessError as e:
+            # 因为B站的BUG，这里在9点和10点的高峰期会经常报重复请求的错误，但是不影响功能，先屏蔽掉
+            if e.code != 4004:
+                logger.info(
+                    'client=%s game heartbeat failed, game_id=%s, error: %s', self.request.remote_ip, game_id, e
+                )
+            self.res = e.data
+        self.write(self.res)
 
 
 ROUTES = [
diff --git a/blivedm b/blivedm
index 4da2795..fc55b75 160000
--- a/blivedm
+++ b/blivedm
@@ -1 +1 @@
-Subproject commit 4da27950c89d4c0bab70ba983ba25bae9f91c19c
+Subproject commit fc55b75dab95ca65700f26a145fc76d7ef05eef1
diff --git a/frontend/package.json b/frontend/package.json
index f23fb4f..b381681 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "blivechat",
-  "version": "1.8.2",
+  "version": "1.9.0-dev",
   "private": true,
   "scripts": {
     "serve": "vue-cli-service serve",
diff --git a/frontend/src/api/chat/ChatClientDirectOpenLive.js b/frontend/src/api/chat/ChatClientDirectOpenLive.js
index 5503353..6b7a1fc 100644
--- a/frontend/src/api/chat/ChatClientDirectOpenLive.js
+++ b/frontend/src/api/chat/ChatClientDirectOpenLive.js
@@ -24,24 +24,32 @@ export default class ChatClientDirectOpenLive extends ChatClientOfficialBase {
   }
 
   stop() {
-    super.stop()
-
-    if (this.gameHeartbeatTimerId) {
-      window.clearInterval(this.gameHeartbeatTimerId)
-      this.gameHeartbeatTimerId = null
-    }
     this.endGame()
+    super.stop()
   }
 
   async initRoom() {
-    if (!await this.startGame()) {
-      return false
+    return this.startGame()
+  }
+
+  async wsConnect() {
+    await super.wsConnect()
+    if (this.isDestroying) {
+      return
     }
 
     if (this.gameId && this.gameHeartbeatTimerId === null) {
-      this.gameHeartbeatTimerId = window.setInterval(this.sendGameHeartbeat.bind(this), GAME_HEARTBEAT_INTERVAL)
+      this.gameHeartbeatTimerId = window.setTimeout(this.onSendGameHeartbeat.bind(this), GAME_HEARTBEAT_INTERVAL)
     }
-    return true
+  }
+
+  onWsClose() {
+    if (this.gameHeartbeatTimerId) {
+      window.clearTimeout(this.gameHeartbeatTimerId)
+      this.gameHeartbeatTimerId = null
+    }
+
+    super.onWsClose()
   }
 
   async startGame() {
@@ -102,6 +110,13 @@ export default class ChatClientDirectOpenLive extends ChatClientOfficialBase {
     return true
   }
 
+  onSendGameHeartbeat() {
+    // 加上随机延迟，减少同时请求的概率
+    let sleepTime = GAME_HEARTBEAT_INTERVAL - (2 * 1000) + (Math.random() * 3 * 1000)
+    this.gameHeartbeatTimerId = window.setTimeout(this.onSendGameHeartbeat.bind(this), sleepTime)
+    this.sendGameHeartbeat()
+  }
+
   async sendGameHeartbeat() {
     if (!this.gameId) {
       return false
@@ -132,10 +147,11 @@ export default class ChatClientDirectOpenLive extends ChatClientOfficialBase {
   }
 
   async onBeforeWsConnect() {
-    // 重连次数太多则重新init_room，保险
+    // 重连次数太多则重新initRoom，保险
     let reinitPeriod = Math.max(3, (this.hostServerUrlList || []).length)
     if (this.retryCount > 0 && this.retryCount % reinitPeriod === 0) {
       this.needInitRoom = true
+      await this.endGame()
     }
     return super.onBeforeWsConnect()
   }
@@ -148,6 +164,16 @@ export default class ChatClientDirectOpenLive extends ChatClientOfficialBase {
     this.websocket.send(this.makePacket(this.authBody, base.OP_AUTH))
   }
 
+  delayReconnect() {
+    if (document.visibilityState !== 'visible') {
+      // 不知道什么时候才能重连，先endGame吧
+      this.needInitRoom = true
+      this.endGame()
+    }
+
+    super.delayReconnect()
+  }
+
   async dmCallback(command) {
     let data = command.data
 
diff --git a/frontend/src/api/chat/ChatClientOfficialBase/index.js b/frontend/src/api/chat/ChatClientOfficialBase/index.js
index a03910c..3903711 100644
--- a/frontend/src/api/chat/ChatClientOfficialBase/index.js
+++ b/frontend/src/api/chat/ChatClientOfficialBase/index.js
@@ -51,6 +51,7 @@ export default class ChatClientOfficialBase {
     this.needInitRoom = true
     this.websocket = null
     this.retryCount = 0
+    this.totalRetryCount = 0
     this.isDestroying = false
     this.heartbeatTimerId = null
     this.receiveTimeoutTimerId = null
@@ -121,6 +122,7 @@ export default class ChatClientOfficialBase {
       res = false
       console.error('initRoom exception:', e)
       if (e instanceof chatModels.ChatClientFatalError) {
+        this.stop()
         this.msgHandler.onFatalError(e)
       }
     }
@@ -185,15 +187,45 @@ export default class ChatClientOfficialBase {
       return
     }
     this.retryCount++
-    console.warn('掉线重连中', this.retryCount)
-    window.setTimeout(this.wsConnect.bind(this), this.getReconnectInterval())
+    this.totalRetryCount++
+    console.warn(`掉线重连中 retryCount=${this.retryCount}, totalRetryCount=${this.totalRetryCount}`)
+
+    // 防止无限重连的保险措施。30次重连大概会断线500秒，应该够了
+    if (this.totalRetryCount > 30) {
+      this.stop()
+      let error = new chatModels.ChatClientFatalError(
+        chatModels.FATAL_ERROR_TYPE_TOO_MANY_RETRIES, 'The connection has lost too many times'
+      )
+      this.msgHandler.onFatalError(error)
+      return
+    }
+
+    this.delayReconnect()
+  }
+
+  delayReconnect() {
+    if (document.visibilityState === 'visible') {
+      window.setTimeout(this.wsConnect.bind(this), this.getReconnectInterval())
+      return
+    }
+
+    // 页面不可见就先不重连了，即使重连也会心跳超时
+    let listener = () => {
+      if (document.visibilityState !== 'visible') {
+        return
+      }
+      document.removeEventListener('visibilitychange', listener)
+      this.wsConnect()
+    }
+    document.addEventListener('visibilitychange', listener)
   }
 
   getReconnectInterval() {
-    return Math.min(
-      1000 + ((this.retryCount - 1) * 2000),
-      10 * 1000
-    )
+    // 不用retryCount了，防止意外的连接成功，导致retryCount重置
+    let interval = Math.min(1000 + ((this.totalRetryCount - 1) * 2000), 20 * 1000)
+    // 加上随机延迟，防止同时请求导致雪崩
+    interval += Math.random() * 3000
+    return interval
   }
 
   onWsMessage(event) {
diff --git a/frontend/src/api/chat/ChatClientRelay.js b/frontend/src/api/chat/ChatClientRelay.js
index 479c0fa..b0430bb 100644
--- a/frontend/src/api/chat/ChatClientRelay.js
+++ b/frontend/src/api/chat/ChatClientRelay.js
@@ -25,6 +25,7 @@ export default class ChatClientRelay {
 
     this.websocket = null
     this.retryCount = 0
+    this.totalRetryCount = 0
     this.isDestroying = false
     this.receiveTimeoutTimerId = null
   }
@@ -92,15 +93,30 @@ export default class ChatClientRelay {
     if (this.isDestroying) {
       return
     }
-    console.warn(`掉线重连中${++this.retryCount}`)
+    this.retryCount++
+    this.totalRetryCount++
+    console.warn(`掉线重连中 retryCount=${this.retryCount}, totalRetryCount=${this.totalRetryCount}`)
+
+    // 防止无限重连的保险措施。30次重连大概会断线500秒，应该够了
+    if (this.totalRetryCount > 30) {
+      this.stop()
+      let error = new chatModels.ChatClientFatalError(
+        chatModels.FATAL_ERROR_TYPE_TOO_MANY_RETRIES, 'The connection has lost too many times'
+      )
+      this.msgHandler.onFatalError(error)
+      return
+    }
+
+    // 这边不用判断页面是否可见，因为发心跳包不是由定时器触发的，即使是不活动页面也不会心跳超时
     window.setTimeout(this.wsConnect.bind(this), this.getReconnectInterval())
   }
 
   getReconnectInterval() {
-    return Math.min(
-      1000 + ((this.retryCount - 1) * 2000),
-      10 * 1000
-    )
+    // 不用retryCount了，防止意外的连接成功，导致retryCount重置
+    let interval = Math.min(1000 + ((this.totalRetryCount - 1) * 2000), 20 * 1000)
+    // 加上随机延迟，防止同时请求导致雪崩
+    interval += Math.random() * 3000
+    return interval
   }
 
   onWsMessage(event) {
@@ -172,6 +188,7 @@ export default class ChatClientRelay {
       break
     }
     case COMMAND_FATAL_ERROR: {
+      this.stop()
       let error = new chatModels.ChatClientFatalError(data.type, data.msg)
       this.msgHandler.onFatalError(error)
       break
diff --git a/frontend/src/api/chat/models.js b/frontend/src/api/chat/models.js
index eaf6712..7ab776d 100644
--- a/frontend/src/api/chat/models.js
+++ b/frontend/src/api/chat/models.js
@@ -113,6 +113,7 @@ export class UpdateTranslationMsg {
 }
 
 export const FATAL_ERROR_TYPE_AUTH_CODE_ERROR = 1
+export const FATAL_ERROR_TYPE_TOO_MANY_RETRIES = 2
 
 export class ChatClientFatalError extends Error {
   constructor(type, message) {
diff --git a/frontend/src/lang/en.js b/frontend/src/lang/en.js
index ba22a1a..6ec68c6 100644
--- a/frontend/src/lang/en.js
+++ b/frontend/src/lang/en.js
@@ -154,6 +154,9 @@ export default {
     p4: '4. Add browser source in OBS',
     p5: '5. Enter the previously copied room URL at URL, and enter the previously copied CSS at custom CSS'
   },
+  room: {
+    fatalErrorOccurred: 'A fatal error has occurred. Please manually refresh the page to reconnect'
+  },
   chat: {
     moderator: 'moderator',
     guardLevel1: 'governor',
diff --git a/frontend/src/lang/ja.js b/frontend/src/lang/ja.js
index 50be0a6..f7ec1ce 100644
--- a/frontend/src/lang/ja.js
+++ b/frontend/src/lang/ja.js
@@ -154,6 +154,9 @@ export default {
     p4: '4. OBSでブラウザを新規作成する',
     p5: '5. プロパティでこぴーしたURLを入力し、カスタムCSSでスタイルジェネレータのCSSを入力する'
   },
+  room: {
+    fatalErrorOccurred: '致命的なエラーが発生しました。ページを手動で更新して再接続してください'
+  },
   chat: {
     moderator: 'モデレーター',
     guardLevel1: '総督',
diff --git a/frontend/src/lang/zh.js b/frontend/src/lang/zh.js
index 917c5cf4..fb6ecd5 100644
--- a/frontend/src/lang/zh.js
+++ b/frontend/src/lang/zh.js
@@ -154,6 +154,9 @@ export default {
     p4: '4. 在OBS中添加浏览器源',
     p5: '5. URL处输入之前复制的房间URL，自定义CSS处输入之前复制的CSS'
   },
+  room: {
+    fatalErrorOccurred: '发生了一个致命错误，请手动刷新页面以重新连接'
+  },
   chat: {
     moderator: '管理员',
     guardLevel1: '总督',
diff --git a/frontend/src/views/Room.vue b/frontend/src/views/Room.vue
index 4a46c6a..bdf0717 100644
--- a/frontend/src/views/Room.vue
+++ b/frontend/src/views/Room.vue
@@ -76,7 +76,12 @@ export default {
   },
   mounted() {
     if (document.visibilityState === 'visible') {
-      this.init()
+      if (this.roomKeyValue === null) {
+        this.init()
+      } else {
+        // 正式房间要随机延迟加载，防止同时请求导致雪崩
+        window.setTimeout(this.init, Math.random() * 3000)
+      }
     } else {
       // 当前窗口不可见，延迟到可见时加载，防止OBS中一次并发太多请求（OBS中浏览器不可见时也会加载网页，除非显式设置）
       document.addEventListener('visibilitychange', this.onVisibilityChange)
@@ -345,7 +350,12 @@ export default {
         message: error.toString(),
         duration: 10 * 1000
       })
-      this.chatClient.stop()
+      this.onAddText(new chatModels.AddTextMsg({
+        authorName: 'blivechat',
+        authorType: constants.AUTHOR_TYPE_ADMIN,
+        content: this.$t('room.fatalErrorOccurred'),
+        authorLevel: 60,
+      }))
 
       if (error.type === chatModels.FATAL_ERROR_TYPE_AUTH_CODE_ERROR) {
         // Read The Fucking Manual
@@ -497,7 +507,7 @@ export default {
             // 获取失败了默认为0
             img.onerror = resolve
             // 超时保底
-            setTimeout(resolve, 5000)
+            window.setTimeout(resolve, 5000)
             img.src = urlInClosure
           }
         ))
diff --git a/main.py b/main.py
index b763f25..c1f0e44 100755
--- a/main.py
+++ b/main.py
@@ -21,6 +21,7 @@ import config
 import models.database
 import services.avatar
 import services.chat
+import services.open_live
 import services.plugin
 import services.translate
 import update
@@ -65,6 +66,7 @@ def init():
 
     services.avatar.init()
     services.translate.init()
+    services.open_live.init()
     services.chat.init()
 
     init_server(args.host, args.port, args.debug)
diff --git a/services/avatar.py b/services/avatar.py
index 2ed8011..b67c6be 100644
--- a/services/avatar.py
+++ b/services/avatar.py
@@ -14,6 +14,7 @@ import sqlalchemy.exc
 import config
 import models.bilibili as bl_models
 import models.database
+import utils.async_io
 import utils.request
 
 logger = logging.getLogger(__name__)
@@ -41,7 +42,7 @@ def init():
     global _avatar_url_cache, _task_queue
     _avatar_url_cache = cachetools.TTLCache(cfg.avatar_cache_size, 10 * 60)
     _task_queue = asyncio.Queue(cfg.fetch_avatar_max_queue_size)
-    asyncio.create_task(_do_init())
+    utils.async_io.create_task_with_ref(_do_init())
 
 
 async def _do_init():
@@ -89,7 +90,7 @@ async def get_avatar_url_or_none(user_id) -> Optional[str]:
         _update_avatar_cache_in_memory(user_id, avatar_url)
         # 如果距离数据库上次更新太久，则在后台从接口获取，并更新所有缓存
         if (datetime.datetime.now() - user.update_time).days >= 1:
-            asyncio.create_task(_refresh_avatar_cache_from_web(user_id))
+            utils.async_io.create_task_with_ref(_refresh_avatar_cache_from_web(user_id))
         return avatar_url
 
     # 从接口获取
@@ -249,7 +250,7 @@ class AvatarFetcher:
         self._cool_down_timer_handle = None
 
     async def init(self):
-        asyncio.create_task(self._fetch_consumer())
+        utils.async_io.create_task_with_ref(self._fetch_consumer())
         return True
 
     @property
diff --git a/services/chat.py b/services/chat.py
index dcf0198..d5ef723 100644
--- a/services/chat.py
+++ b/services/chat.py
@@ -2,20 +2,21 @@
 import asyncio
 import enum
 import logging
+import random
 import uuid
 from typing import *
 
 import api.chat
 import api.open_live as api_open_live
+import blcsdk.models as sdk_models
 import blivedm.blivedm as blivedm
 import blivedm.blivedm.models.open_live as dm_open_models
 import blivedm.blivedm.models.web as dm_web_models
-import blivedm.blivedm.utils as dm_utils
 import config
 import services.avatar
-import services.translate
 import services.plugin
-import blcsdk.models as sdk_models
+import services.translate
+import utils.async_io
 import utils.request
 
 logger = logging.getLogger(__name__)
@@ -169,7 +170,20 @@ class LiveClientManager:
         )
 
 
-RECONNECT_POLICY = dm_utils.make_linear_retry_policy(1, 2, 10)
+class TooManyRetries(Exception):
+    """重试次数太多"""
+
+
+def _get_reconnect_interval(_retry_count: int, total_retry_count: int):
+    # 防止无限重连的保险措施。30次重连大概会断线500秒，应该够了
+    if total_retry_count > 30:
+        raise TooManyRetries(f'total_retry_count={total_retry_count}')
+
+    # 不用retry_count了，防止意外的连接成功，导致retry_count重置
+    interval = min(1 + (total_retry_count - 1) * 2, 20)
+    # 加上随机延迟，防止同时请求导致雪崩
+    interval += random.uniform(0, 3)
+    return interval
 
 
 class WebLiveClient(blivedm.BLiveClient):
@@ -183,7 +197,7 @@ class WebLiveClient(blivedm.BLiveClient):
             session=utils.request.http_session,
             heartbeat_interval=self.HEARTBEAT_INTERVAL,
         )
-        self.set_reconnect_policy(RECONNECT_POLICY)
+        self.set_reconnect_policy(_get_reconnect_interval)
 
     @property
     def room_key(self):
@@ -220,7 +234,7 @@ class OpenLiveClient(blivedm.OpenLiveClient):
             session=utils.request.http_session,
             heartbeat_interval=self.HEARTBEAT_INTERVAL,
         )
-        self.set_reconnect_policy(RECONNECT_POLICY)
+        self.set_reconnect_policy(_get_reconnect_interval)
 
     @property
     def room_key(self):
@@ -289,6 +303,14 @@ class OpenLiveClient(blivedm.OpenLiveClient):
             return False
         return True
 
+    def _on_send_game_heartbeat(self):
+        # 加上随机延迟，减少同时请求的概率
+        sleep_time = self._game_heartbeat_interval + random.uniform(-2, 1)
+        self._game_heartbeat_timer_handle = asyncio.get_running_loop().call_later(
+            sleep_time, self._on_send_game_heartbeat
+        )
+        utils.async_io.create_task_with_ref(self._send_game_heartbeat())
+
     async def _send_game_heartbeat(self):
         if self._game_id in (None, ''):
             logger.warning('game=%d _send_game_heartbeat() failed, game_id not found', self._game_id)
@@ -297,11 +319,7 @@ class OpenLiveClient(blivedm.OpenLiveClient):
         # 保存一下，防止await之后game_id改变
         game_id = self._game_id
         try:
-            await api_open_live.request_open_live_or_common_server(
-                api_open_live.GAME_HEARTBEAT_OPEN_LIVE_URL,
-                api_open_live.GAME_HEARTBEAT_COMMON_SERVER_URL,
-                {'game_id': game_id}
-            )
+            await api_open_live.send_game_heartbeat_by_service_or_common_server(game_id)
         except api_open_live.TransportError:
             logger.error('room=%d _send_game_heartbeat() failed', self.room_id)
             return False
@@ -460,18 +478,22 @@ class ClientRoom:
 
 class LiveMsgHandler(blivedm.BaseHandler):
     def on_client_stopped(self, client: LiveClientType, exception: Optional[Exception]):
+        if isinstance(exception, TooManyRetries):
+            room = client_room_manager.get_room(client.room_key)
+            if room is not None:
+                room.send_cmd_data(api.chat.Command.FATAL_ERROR, {
+                    'type': api.chat.FatalErrorType.TOO_MANY_RETRIES,
+                    'msg': 'The connection has lost too many times'
+                })
+
         _live_client_manager.del_live_client(client.room_key)
 
     def _on_danmaku(self, client: WebLiveClient, message: dm_web_models.DanmakuMessage):
-        asyncio.create_task(self.__on_danmaku(client, message))
+        utils.async_io.create_task_with_ref(self.__on_danmaku(client, message))
 
     async def __on_danmaku(self, client: WebLiveClient, message: dm_web_models.DanmakuMessage):
-        avatar_url = message.face
-        if avatar_url != '':
-            services.avatar.update_avatar_cache_if_expired(message.uid, avatar_url)
-        else:
-            # 先异步调用再获取房间，因为返回时房间可能已经不存在了
-            avatar_url = await services.avatar.get_avatar_url(message.uid, message.uname)
+        # 先异步调用再获取房间，因为返回时房间可能已经不存在了
+        avatar_url = await services.avatar.get_avatar_url(message.uid, message.uname)
 
         room = client_room_manager.get_room(client.room_key)
         if room is None:
@@ -569,7 +591,7 @@ class LiveMsgHandler(blivedm.BaseHandler):
         )
 
     def _on_buy_guard(self, client: WebLiveClient, message: dm_web_models.GuardBuyMessage):
-        asyncio.create_task(self.__on_buy_guard(client, message))
+        utils.async_io.create_task_with_ref(self.__on_buy_guard(client, message))
 
     @staticmethod
     async def __on_buy_guard(client: WebLiveClient, message: dm_web_models.GuardBuyMessage):
@@ -638,7 +660,7 @@ class LiveMsgHandler(blivedm.BaseHandler):
         )
 
         if need_translate:
-            asyncio.create_task(self._translate_and_response(
+            utils.async_io.create_task_with_ref(self._translate_and_response(
                 message.message, room.room_key, msg_id, services.translate.Priority.HIGH
             ))
 
@@ -747,7 +769,9 @@ class LiveMsgHandler(blivedm.BaseHandler):
         )
 
         if need_translate:
-            asyncio.create_task(self._translate_and_response(message.msg, room.room_key, message.msg_id))
+            utils.async_io.create_task_with_ref(self._translate_and_response(
+                message.msg, room.room_key, message.msg_id
+            ))
 
     def _on_open_live_gift(self, client: OpenLiveClient, message: dm_open_models.GiftMessage):
         avatar_url = services.avatar.process_avatar_url(message.uface)
@@ -846,7 +870,7 @@ class LiveMsgHandler(blivedm.BaseHandler):
         )
 
         if need_translate:
-            asyncio.create_task(self._translate_and_response(
+            utils.async_io.create_task_with_ref(self._translate_and_response(
                 message.message, room.room_key, msg_id, services.translate.Priority.HIGH
             ))
 
diff --git a/services/open_live.py b/services/open_live.py
new file mode 100644
index 0000000..4cb4311
--- /dev/null
+++ b/services/open_live.py
@@ -0,0 +1,102 @@
+# -*- coding: utf-8 -*-
+import asyncio
+import dataclasses
+import datetime
+import logging
+from typing import *
+
+import api.open_live
+import config
+import utils.async_io
+
+logger = logging.getLogger(__name__)
+
+# 正在等待发送的心跳任务，game_id -> HeartbeatTask
+_game_id_heart_task_map: Dict[str, 'HeartbeatTask'] = {}
+
+
+@dataclasses.dataclass
+class HeartbeatTask:
+    game_id: str
+    future: 'asyncio.Future[dict]'
+
+
+def init():
+    cfg = config.get_config()
+    # 批量心跳只支持配置了开放平台的公共服务器，私有服务器用的人少，意义不大
+    if cfg.is_open_live_configured:
+        utils.async_io.create_task_with_ref(_game_heartbeat_consumer())
+
+
+async def send_game_heartbeat(game_id) -> dict:
+    """发送项目心跳。成功则返回符合开放平台格式的结果，失败则抛出异常"""
+    assert config.get_config().is_open_live_configured
+    if game_id in (None, ''):
+        raise api.open_live.BusinessError({'code': 4000, 'message': '参数错误', 'request_id': '0', 'data': None})
+
+    task = _game_id_heart_task_map.get(game_id, None)
+    if task is None:
+        task = HeartbeatTask(
+            game_id=game_id,
+            future=asyncio.get_running_loop().create_future(),
+        )
+
+        _game_id_heart_task_map[game_id] = task
+        # 限制一次发送的数量，数量太多了就立即发送
+        if len(_game_id_heart_task_map) >= 200:
+            await _flush_game_heartbeat_tasks()
+
+    return await task.future
+
+
+async def _game_heartbeat_consumer():
+    while True:
+        try:
+            start_time = datetime.datetime.now()
+            await _flush_game_heartbeat_tasks()
+            cost_time = (datetime.datetime.now() - start_time).total_seconds()
+
+            # 如果等待时间太短，请求频率会太高；如果等待时间太长，前端请求、项目心跳会超时
+            await asyncio.sleep(4 - cost_time)
+        except Exception:  # noqa
+            logger.exception('_heartbeat_consumer error:')
+
+
+async def _flush_game_heartbeat_tasks():
+    global _game_id_heart_task_map
+    if not _game_id_heart_task_map:
+        return
+    game_id_task_map = _game_id_heart_task_map
+    _game_id_heart_task_map = {}
+
+    game_ids = list(game_id_task_map.keys())
+    logger.info('Sending game batch heartbeat for %d games', len(game_ids))
+    try:
+        res = await api.open_live.request_open_live(
+            api.open_live.GAME_BATCH_HEARTBEAT_OPEN_LIVE_URL,
+            {'game_ids': game_ids},
+            ignore_rate_limit=True
+        )
+        failed_game_ids = res['data']['failed_game_ids']
+        if failed_game_ids is None:  # 哪个SB后端给数组传null的
+            failed_game_ids = set()
+        else:
+            failed_game_ids = set(failed_game_ids)
+        request_id = res['request_id']
+    except Exception as e:
+        for task in game_id_task_map.values():
+            task.future.set_exception(e)
+        return
+    if failed_game_ids:
+        logger.info(
+            'Game batch heartbeat res: %d succeeded, %d failed, request_id=%s',
+            len(game_ids) - len(failed_game_ids), len(failed_game_ids), request_id
+        )
+
+    for task in game_id_task_map.values():
+        if task.game_id in failed_game_ids:
+            task.future.set_exception(api.open_live.BusinessError(
+                {'code': 7003, 'message': '心跳过期或GameId错误', 'request_id': request_id, 'data': None}
+            ))
+        else:
+            task.future.set_result({'code': 0, 'message': '0', 'request_id': request_id, 'data': None})
diff --git a/services/translate.py b/services/translate.py
index 0fe111d..4838ea4 100644
--- a/services/translate.py
+++ b/services/translate.py
@@ -19,6 +19,7 @@ import aiohttp
 import cachetools
 
 import config
+import utils.async_io
 import utils.request
 
 logger = logging.getLogger(__name__)
@@ -56,7 +57,7 @@ def init():
     _translate_cache = cachetools.LRUCache(cfg.translation_cache_size)
     # 总队列长度会超过translate_max_queue_size，不用这么严格
     _task_queues = [asyncio.Queue(cfg.translate_max_queue_size) for _ in range(len(Priority))]
-    asyncio.create_task(_do_init())
+    utils.async_io.create_task_with_ref(_do_init())
 
 
 async def _do_init():
@@ -229,7 +230,7 @@ class TranslateProvider:
         self._be_available_event.set()
 
     async def init(self):
-        asyncio.create_task(self._translate_consumer())
+        utils.async_io.create_task_with_ref(self._translate_consumer())
         return True
 
     @property
diff --git a/update.py b/update.py
index bb31df4..80cb41f 100644
--- a/update.py
+++ b/update.py
@@ -3,13 +3,14 @@ import asyncio
 
 import aiohttp
 
+import utils.async_io
 import utils.request
 
 VERSION = 'v1.8.2'
 
 
 def check_update():
-    asyncio.create_task(_do_check_update())
+    utils.async_io.create_task_with_ref(_do_check_update())
 
 
 async def _do_check_update():
diff --git a/utils/async_io.py b/utils/async_io.py
new file mode 100644
index 0000000..f0bb9f4
--- /dev/null
+++ b/utils/async_io.py
@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+import asyncio
+
+# 只用于持有Task的引用
+_task_refs = set()
+
+
+def create_task_with_ref(*args, **kwargs):
+    """创建Task并保持引用，防止协程执行完之前就被GC"""
+    task = asyncio.create_task(*args, **kwargs)
+    _task_refs.add(task)
+    task.add_done_callback(_task_refs.discard)
+    return task
diff --git a/utils/rate_limit.py b/utils/rate_limit.py
new file mode 100644
index 0000000..0a8c0ab
--- /dev/null
+++ b/utils/rate_limit.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+import datetime
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class TokenBucket:
+    def __init__(self, tokens_per_sec, max_token_num):
+        self._tokens_per_sec = float(tokens_per_sec)
+        self._max_token_num = float(max_token_num)
+        self._stored_token_num = self._max_token_num
+        self._last_update_time = datetime.datetime.now()
+
+        if self._tokens_per_sec <= 0.0 and self._max_token_num >= 1.0:
+            logger.warning('TokenBucket token_per_sec=%f <= 0, rate has no limit', tokens_per_sec)
+
+    def try_decrease_token(self):
+        if self._tokens_per_sec <= 0.0:
+            # self._max_token_num < 1.0 时完全禁止
+            return self._max_token_num >= 1.0
+
+        cur_time = datetime.datetime.now()
+        last_update_time = min(self._last_update_time, cur_time)  # 防止时钟回拨
+        add_token_num = (cur_time - last_update_time).total_seconds() * self._tokens_per_sec
+        self._stored_token_num = min(self._stored_token_num + add_token_num, self._max_token_num)
+        self._last_update_time = cur_time
+
+        if self._stored_token_num < 1.0:
+            return False
+        self._stored_token_num -= 1.0
+        return True
diff --git a/utils/request.py b/utils/request.py
index 97c9a16..ecfb64a 100644
--- a/utils/request.py
+++ b/utils/request.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+import asyncio
 from typing import *
 
 import aiohttp
@@ -16,9 +17,21 @@ http_session: Optional[aiohttp.ClientSession] = None
 
 def init():
     global http_session
-    http_session = aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=10))
+    http_session = aiohttp.ClientSession(
+        response_class=CustomClientResponse,
+        timeout=aiohttp.ClientTimeout(total=10),
+    )
 
 
 async def shut_down():
     if http_session is not None:
         await http_session.close()
+
+
+class CustomClientResponse(aiohttp.ClientResponse):
+    # 因为aiohttp的BUG，当底层连接断开时，_wait_released可能会抛出CancelledError，导致上层协程结束。这里改个错误类型
+    async def _wait_released(self):
+        try:
+            return await super()._wait_released()
+        except asyncio.CancelledError as e:
+            raise aiohttp.ClientConnectionError('Connection released') from e