python - “str”不支持 Memcached 的缓冲区接口(interface)

Question

我正在使用 django 1.7 和 python3.4。我最近安装了 Memcached 并尝试根据站点缓存将其与 python-memcached 一起使用。但是，一旦我在 settings.py 中定义了默认缓存后端，我的应用程序就会停止工作并抛出此错误:

'str' does not support the buffer interface

安装的中间件和回溯是:

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:\Python34\lib\site-packages\django\core\handlers\base.py" in get_response
  87.                 response = middleware_method(request)
File "C:\Python34\lib\site-packages\django\middleware\cache.py" in process_request
  148.         cache_key = get_cache_key(request, self.key_prefix, 'GET', cache=self.cache)
File "C:\Python34\lib\site-packages\django\utils\cache.py" in get_cache_key
  223.     headerlist = cache.get(cache_key, None)
File "C:\Python34\lib\site-packages\django\core\cache\backends\memcached.py" in get
  82.         val = self._cache.get(key)
File "C:\Python34\lib\site-packages\memcache.py" in get
  1002.         return self._get('get', key)
File "C:\Python34\lib\site-packages\memcache.py" in _get
  986.             return _unsafe_get()
File "C:\Python34\lib\site-packages\memcache.py" in _unsafe_get
  957.                 server.send_cmd("%s %s" % (cmd, key))
File "C:\Python34\lib\site-packages\memcache.py" in send_cmd
  1299.         self.socket.sendall(cmd + '\r\n')

Exception Type: TypeError at /ask/
Exception Value: 'str' does not support the buffer interface

请告诉我问题是什么以及解决方案。 python-memcache 绑定(bind)不适用于 python3.4

Answer 1

pylibmc does实际上似乎很好地支持Python3和Django。经过对不同模块的一番努力后，我刚刚使用 django-pylibmc 成功迁移到基于 pylibmc 的设置:
sudo apt-get install libmemcached-dev
pip安装pylibmc
pip 安装 django-pylibmc


为了使用新模块，Django 缓存配置发生了变化:
缓存 = {
'默认': {
'后端': 'django.core.cache.backends.memcached.PyLibMCCache',
“位置”:“127.0.0.1.11211”，
}
}
Python3 下的所有这些:
uwsgi套接字0绑定(bind)到TCP地址127.0.0.1:9090 fd 3
Python版本:3.4.0(默认，2015年6月19日，14:24:19)[GCC 4.8.2]