'str'不支持使用 Memcached 的缓冲区接口

Question

我使用django 1.7与python3.4。我最近安装了Memcached，并试图将其与python-memcached一起使用。但是，一旦我在settings.py中定义了默认的缓存后端，我的应用程序就会停止工作，抛出以下错误:

'str' does not support the buffer interface

已安装的中间件和回溯为:

Installed Middleware:
('debug_toolbar.middleware.DebugToolbarMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.cache.UpdateCacheMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.cache.FetchFromCacheMiddleware')

Traceback:
File "C:Python34libsite-packagesdjangocorehandlersbase.py" in get_response
  87.                 response = middleware_method(request)
File "C:Python34libsite-packagesdjangomiddlewarecache.py" in process_request
  148.         cache_key = get_cache_key(request, self.key_prefix, 'GET', cache=self.cache)
File "C:Python34libsite-packagesdjangoutilscache.py" in get_cache_key
  223.     headerlist = cache.get(cache_key, None)
File "C:Python34libsite-packagesdjangocorecachebackendsmemcached.py" in get
  82.         val = self._cache.get(key)
File "C:Python34libsite-packagesmemcache.py" in get
  1002.         return self._get('get', key)
File "C:Python34libsite-packagesmemcache.py" in _get
  986.             return _unsafe_get()
File "C:Python34libsite-packagesmemcache.py" in _unsafe_get
  957.                 server.send_cmd("%s %s" % (cmd, key))
File "C:Python34libsite-packagesmemcache.py" in send_cmd
  1299.         self.socket.sendall(cmd + 'rn')
Exception Type: TypeError at /ask/
Exception Value: 'str' does not support the buffer interface

请告诉我问题是什么，解决办法是什么。python-memcache绑定在python3.4中不能工作吗

Answer 1

pylibmc似乎确实很好地支持Python3和Django。经过与不同模块的一些斗争，我刚刚成功地迁移到使用django-pylibmc的基于pylibmc的设置: sudo apt-get install libmemcached-dev pip install pylibmc pip install django-pylibmc

在Django的缓存配置中有一个变化来使用新的模块: CACHES = { 'default': { 'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache', 'LOCATION': '127.0.0.1.11211', } } Python3下的所有内容: uwsgi socket 0 bound to TCP address 127.0.0.1:9090 fd 3 Python version: 3.4.0 (default, Jun 19 2015, 14:24:19) [GCC 4.8.2]

Answer 2

在我的例子中，将python-memcached更新到1.59版本解决了这个问题。

Answer 3

更新:这个答案已经过时了。请检查下面的其他答案。.....................................................................................................................

Python -memcached库不兼容Python 3.4。Pylibmc也不支持python3。

python3-memcached是过时/未维护的纯python memcache客户端实现的python3端口。

在大多数情况下，Redis被强烈认为是memcached更好的替代品。Redis-py支持python3