Move initializing cache to asgi.py

See also: #17

wlm_server/wlm_server/asgi.py

@@ -11,15 +11,19 @@
 
 from django.core.asgi import get_asgi_application
 from django.urls import path
+from django.conf import settings
 from channels.auth import AuthMiddlewareStack
 from channels.routing import ProtocolTypeRouter, URLRouter
 from channels.security.websocket import AllowedHostsOriginValidator
 
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'wlm_server.settings')
 
 # pylint: disable=wrong-import-position
+from cache.channel import ChannelCache
 from operation.consumers import OperationConsumer
 
+settings.CHANNEL_CACHE = ChannelCache()
+
 application = ProtocolTypeRouter(
     {
         'http': get_asgi_application(),

wlm_server/wlm_server/wsgi.py

@@ -16,6 +16,4 @@
 
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'wlm_server.settings')
 
-settings.CHANNEL_CACHE = ChannelCache()
-
 application = get_wsgi_application()