你如何确认django正在使用memcached？

Question

我有一个python django webserver,我试图使用memcached来加快速度.

我已经下载并安装了memcached并启动了一个名为virtual的用户,如下所示:

/usr/local/bin/memcached -u virtual & 

在django setting.py上,我把memcached服务器放在这个:

MEMCACHE_HOSTS = ['192.168.101.1:11211']

我可以telnet 192.168.101.1 11211和统计数据,我确实看到一些统计数据等.

我怎么知道我的django服务器是否使用了memcached？是否有我可以查看的目录或一些要确认的文件？

感谢您的任何见解.

manage.py的内容:

#!/usr/bin/env python
import os
import sys

from django.core.management import execute_from_command_line


if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)

从命令行:

phthon

from django.core.management import execute_from_command_line

当我这样做时:

from django.core.cache import cache

我收到这些错误:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib64/python2.6/site-packages/django/core/cache/__init__.py", line 69, in <module>
    if DEFAULT_CACHE_ALIAS not in settings.CACHES:
  File "/usr/local/lib64/python2.6/site-packages/django/conf/__init__.py", line 54, in __getattr__
    self._setup(name)
  File "/usr/local/lib64/python2.6/site-packages/django/conf/__init__.py", line 47, in _setup
    % (desc, ENVIRONMENT_VARIABLE))
django.core.exceptions.ImproperlyConfigured: Requested setting CACHES, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.

Answer 1

你可以在Django的shell(python manage.py shell)中测试缓存:

from django.core.cache import cache
cache.set('foo', 'bar', 600)
cache.get('foo')

如果这有效,则意味着缓存正在按预期工作.否则会抛出错误.

其他选项是为memcached安装监控工具(即memcache-top),并在使用您的应用程序时检查memcached中是否发生了某些事情.