diff --git a/server/utils/redis.py b/server/utils/redis.py
index ceda407d..41a93087 100644
--- a/server/utils/redis.py
+++ b/server/utils/redis.py
@@ -1,110 +1,110 @@
-import asyncio
-import functools
-import logging
-import pickle
-import random
-from inspect import iscoroutinefunction
-
-import redis
-from app import app
-
-app.config.setdefault("REDIS_URL", "redis://redis:6379/0")
-
-client = redis.from_url(app.config["REDIS_URL"], decode_responses=True)
-
-
-class RedisStorage(object):
-    def __init__(self, **kwargs):
-        for k, v in kwargs.items():
-            if v:
-                self.set(k, v)
-
-    def get(self, name):
-        return client.get(name)
-
-    def set(self, name, value):
-        client.set(name, value)
-
-
-def get_client(decode_responses=False):
-    return redis.from_url(app.config["REDIS_URL"], decode_responses=decode_responses)
-
-
-def gen_prefix(obj, method):
-    return ".".join([obj.__module__, obj.__class__.__name__, method.__name__])
-
-
-def stalecache(
-    key=None,
-    expire=600,
-    stale=3600,
-    time_lock=1,
-    time_delay=1,
-    max_time_delay=10,
-):
-    def decorate(method):
-        @functools.wraps(method)
-        def wrapper(*args, **kwargs):
-            if kwargs.get("skip_cache"):
-                return method(*args, **kwargs)
-            name = args[0] if args and not key else None
-
-            res = get_client(False).pipeline().ttl(name).get(name).execute()
-            v = pickle.loads(res[1]) if res[0] > 0 and res[1] else None
-            if res[0] <= 0 or res[0] < stale:
-
-                def func():
-                    value = method(*args, **kwargs)
-                    logging.debug("update cache: %s", name)
-                    get_client(False).pipeline().set(name, pickle.dumps(value)).expire(
-                        name, expire + stale
-                    ).execute()
-                    return value
-
-                # create new cache in blocking modal, if cache not exists.
-                if res[0] <= 0:
-                    return func()
-
-                # create new cache in non blocking modal, and return stale data.
-                # set expire to get a "lock", and delay to run the task
-                real_time_delay = random.randrange(time_delay, max_time_delay)
-                get_client(False).expire(name, stale + real_time_delay + time_lock)
-                # 创建一个 asyncio 任务来执行 func
-                asyncio.create_task(asyncio.sleep(real_time_delay, func()))
-
-            return v
-
-        @functools.wraps(method)
-        async def async_wrapper(*args, **kwargs):
-            if kwargs.get("skip_cache"):
-                return await method(*args, **kwargs)
-
-            name = args[0] if args and not key else None
-
-            res = get_client(False).pipeline().ttl(name).get(name).execute()
-            v = pickle.loads(res[1]) if res[0] > 0 and res[1] else None
-            if res[0] <= 0 or res[0] < stale:
-
-                async def func():
-                    value = await method(*args, **kwargs)
-                    logging.debug("update cache: %s", name)
-                    get_client(False).pipeline().set(name, pickle.dumps(value)).expire(
-                        name, expire + stale
-                    ).execute()
-                    return value
-
-                # create new cache in blocking modal, if cache not exists.
-                if res[0] <= 0:
-                    return await func()
-
-                # create new cache in non blocking modal, and return stale data.
-                # set expire to get a "lock", and delay to run the task
-                real_time_delay = random.randrange(time_delay, max_time_delay)
-                get_client(False).expire(name, stale + real_time_delay + time_lock)
-                asyncio.create_task(asyncio.sleep(real_time_delay, func()))
-
-            return v
-
-        return async_wrapper if iscoroutinefunction(method) else wrapper
-
-    return decorate
+import asyncio
+import functools
+import logging
+import pickle
+import random
+from inspect import iscoroutinefunction
+
+import redis
+from app import app
+
+app.config.setdefault("REDIS_URL", "redis://redis:6379/0")
+
+client = redis.from_url(app.config["REDIS_URL"], decode_responses=True)
+
+
+class RedisStorage(object):
+    def __init__(self, **kwargs):
+        for k, v in kwargs.items():
+            if v:
+                self.set(k, v)
+
+    def get(self, name):
+        return client.get(name)
+
+    def set(self, name, value):
+        client.set(name, value)
+
+
+def get_client(decode_responses=False):
+    return redis.from_url(app.config["REDIS_URL"], decode_responses=decode_responses)
+
+
+def gen_prefix(obj, method):
+    return ".".join([obj.__module__, obj.__class__.__name__, method.__name__])
+
+
+def stalecache(
+    key=None,
+    expire=600,
+    stale=3600,
+    time_lock=1,
+    time_delay=1,
+    max_time_delay=10,
+):
+    def decorate(method):
+        @functools.wraps(method)
+        def wrapper(*args, **kwargs):
+            if kwargs.get("skip_cache"):
+                return method(*args, **kwargs)
+            name = args[0] if args and not key else None
+
+            res = get_client(False).pipeline().ttl(name).get(name).execute()
+            v = pickle.loads(res[1]) if res[0] > 0 and res[1] else None
+            if res[0] <= 0 or res[0] < stale:
+
+                def func():
+                    value = method(*args, **kwargs)
+                    logging.debug("update cache: %s", name)
+                    get_client(False).pipeline().set(name, pickle.dumps(value)).expire(
+                        name, expire + stale
+                    ).execute()
+                    return value
+
+                # create new cache in blocking modal, if cache not exists.
+                if res[0] <= 0:
+                    return func()
+
+                # create new cache in non blocking modal, and return stale data.
+                # set expire to get a "lock", and delay to run the task
+                real_time_delay = random.randrange(time_delay, max_time_delay)
+                get_client(False).expire(name, stale + real_time_delay + time_lock)
+                # 创建一个 asyncio 任务来执行 func
+                asyncio.create_task(asyncio.sleep(real_time_delay, func()))
+
+            return v
+
+        @functools.wraps(method)
+        async def async_wrapper(*args, **kwargs):
+            if kwargs.get("skip_cache"):
+                return await method(*args, **kwargs)
+
+            name = args[0] if args and not key else None
+
+            res = get_client(False).pipeline().ttl(name).get(name).execute()
+            v = pickle.loads(res[1]) if res[0] > 0 and res[1] else None
+            if res[0] <= 0 or res[0] < stale:
+
+                async def func():
+                    value = await method(*args, **kwargs)
+                    logging.debug("update cache: %s", name)
+                    get_client(False).pipeline().set(name, pickle.dumps(value)).expire(
+                        name, expire + stale
+                    ).execute()
+                    return value
+
+                # create new cache in blocking modal, if cache not exists.
+                if res[0] <= 0:
+                    return await func()
+
+                # create new cache in non blocking modal, and return stale data.
+                # set expire to get a "lock", and delay to run the task
+                real_time_delay = random.randrange(time_delay, max_time_delay)
+                get_client(False).expire(name, stale + real_time_delay + time_lock)
+                asyncio.create_task(asyncio.sleep(real_time_delay, func()))
+
+            return v
+
+        return async_wrapper if iscoroutinefunction(method) else wrapper
+
+    return decorate