Redis で Celery を使用していくつかのバックグラウンド タスクを実行していますが、タスクが呼び出されるたびに、Redis への新しい接続が作成されます。私は Heroku を使用しており、私の Redis to Go プランでは 10 個の接続が許可されています。すぐにその制限に達し、「クライアントの最大数に達しました」というエラーが表示されます。
Celery が毎回新しい接続を開くのではなく、単一の接続でタスクをキューに入れるようにするにはどうすればよいですか?
編集- 完全なトレースバックを含む
File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
response = callback(request, *callback_args, **callback_kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/newrelic-1.4.0.137/newrelic/api/object_wrapper.py", line 166, in __call__
self._nr_instance, args, kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/newrelic-1.4.0.137/newrelic/hooks/framework_django.py", line 447, in wrapper
return wrapped(*args, **kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 77, in wrapped_view
return view_func(*args, **kwargs)
File "/app/feedback/views.py", line 264, in zencoder_webhook_handler
tasks.process_zencoder_notification.delay(webhook)
File "/app/.heroku/venv/lib/python2.7/site-packages/celery/app/task.py", line 343, in delay
return self.apply_async(args, kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/celery/app/task.py", line 458, in apply_async
with app.producer_or_acquire(producer) as P:
File "/usr/local/lib/python2.7/contextlib.py", line 17, in __enter__
return self.gen.next()
File "/app/.heroku/venv/lib/python2.7/site-packages/celery/app/base.py", line 247, in producer_or_acquire
with self.amqp.producer_pool.acquire(block=True) as producer:
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/connection.py", line 705, in acquire
R = self.prepare(R)
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/pools.py", line 54, in prepare
p = p()
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/pools.py", line 45, in <lambda>
return lambda: self.create_producer()
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/pools.py", line 42, in create_producer
return self.Producer(self._acquire_connection())
File "/app/.heroku/venv/lib/python2.7/site-packages/celery/app/amqp.py", line 160, in __init__
super(TaskProducer, self).__init__(channel, exchange, *args, **kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/messaging.py", line 83, in __init__
self.revive(self.channel)
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/messaging.py", line 174, in revive
channel = self.channel = maybe_channel(channel)
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/connection.py", line 879, in maybe_channel
return channel.default_channel
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/connection.py", line 617, in default_channel
self.connection
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/connection.py", line 610, in connection
self._connection = self._establish_connection()
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/connection.py", line 569, in _establish_connection
conn = self.transport.establish_connection()
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/transport/virtual/__init__.py", line 722, in establish_connection
self._avail_channels.append(self.create_channel(self))
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/transport/virtual/__init__.py", line 705, in create_channel
channel = self.Channel(connection)
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/transport/redis.py", line 271, in __init__
self.client.info()
File "/app/.heroku/venv/lib/python2.7/site-packages/newrelic-1.4.0.137/newrelic/api/object_wrapper.py", line 166, in __call__
self._nr_instance, args, kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/newrelic-1.4.0.137/newrelic/api/function_trace.py", line 81, in literal_wrapper
return wrapped(*args, **kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/redis/client.py", line 344, in info
return self.execute_command('INFO')
File "/app/.heroku/venv/lib/python2.7/site-packages/kombu/transport/redis.py", line 536, in execute_command
conn.send_command(*args)
File "/app/.heroku/venv/lib/python2.7/site-packages/redis/connection.py", line 273, in send_command
self.send_packed_command(self.pack_command(*args))
File "/app/.heroku/venv/lib/python2.7/site-packages/redis/connection.py", line 256, in send_packed_command
self.connect()
File "/app/.heroku/venv/lib/python2.7/site-packages/newrelic-1.4.0.137/newrelic/api/object_wrapper.py", line 166, in __call__
self._nr_instance, args, kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/newrelic-1.4.0.137/newrelic/api/function_trace.py", line 81, in literal_wrapper
return wrapped(*args, **kwargs)
File "/app/.heroku/venv/lib/python2.7/site-packages/redis/connection.py", line 207, in connect
self.on_connect()
File "/app/.heroku/venv/lib/python2.7/site-packages/redis/connection.py", line 233, in on_connect
if self.read_response() != 'OK':
File "/app/.heroku/venv/lib/python2.7/site-packages/redis/connection.py", line 283, in read_response
raise response
ResponseError: max number of clients reached