blocks|key|687820|text|不幸的是，您不能更改低级cache.set()和cache.get()方法使用的缓存别名。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|687821|根据django.core.cache.__init__.py的51行(在Django1.3中)，这些方法总是使用‘默认’缓存|687822|DEFAULT_CACHE_ALIAS+=+'default'|code-block|syntax|javascript|687823|因此，你需要将你的默认缓存设置为你想要用于低级缓存的缓存，然后将其他别名用于站点缓存、页面缓存和数据库缓存路由。`|687824|entityMap^0|C|B|O|B|0|2|T|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

Unfortunately, you can't change which cache alias is used for the low-level <code>cache.set()</code> and <code>cache.get()</code> methods.

These methods always use 'default' cache as per line 51 (in Django 1.3) of <code>django.core.cache.__init__.py</code>:

<pre><code>DEFAULT_CACHE_ALIAS = 'default'
</code></pre>

So you need to set your 'default' cache to the cache you want to use for the low-level cache and then use the other aliases for things like site cache, page cache, and db cache routing.
`

blocks|key|687835|text|CACHES+=+{
++'default':+{
++++'BACKEND':+'django.core.cache.backends.filebased.FileBasedCache',
++++'LOCATION':+'c:/foo/bar',
++},
++'inmem':+{
++++'BACKEND':+'django.core.cache.backends.dummy.DummyCache',
++}
}+

from+django.core.cache+import+get_cache,+cache
inmem_cache+=+get_cache('inmem')
default_cache+=+get_cache('default')
#+default_cache+==+cache+|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|687836|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>CACHES = {
 'default': {
 'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
 'LOCATION': 'c:/foo/bar',
 },
 'inmem': {
 'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
 }
} 

from django.core.cache import get_cache, cache
inmem_cache = get_cache('inmem')
default_cache = get_cache('default')
# default_cache == cache 
</code></pre>

blocks|key|904356|text|除了罗马人上面的回答。您还可以按名称有条件地导入缓存，如果请求的缓存不存在，则使用默认缓存(或任何其他缓存)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|904357|from+django.core.cache+import+cache+as+default_cache,+get_cache
from+django.core.cache.backends.base+import+InvalidCacheBackendError

try:
++++cache+=+get_cache('foo-cache')
except+InvalidCacheBackendError:
++++cache+=+default_cache

cache.get('foo')|code-block|syntax|javascript|904358|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In addition to Romans's answer above... You can also conditionally import a cache by name, and use the default (or any other cache) if the requested doesn't exist.

<pre><code>from django.core.cache import cache as default_cache, get_cache
from django.core.cache.backends.base import InvalidCacheBackendError

try:
 cache = get_cache('foo-cache')
except InvalidCacheBackendError:
 cache = default_cache

cache.get('foo')
</code></pre>

blocks|key|687930|text|从Django+1.9开始，get_cache就被废弃了。执行以下操作以从'inmem‘中寻址密钥(罗马人对answer的补充)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|687931|from+django.core.cache+import+caches
caches['inmem'].get(key)|code-block|syntax|javascript|687932|entityMap^0|E|9|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Since Django 1.9, <code>get_cache</code> is deprecated. Do the following to address keys from 'inmem' (addition to answer by Romans):

<pre><code>from django.core.cache import caches
caches['inmem'].get(key)
</code></pre>

blocks|key|904422|text|From+the+docs:|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|904423|>>>+from+django.core.cache+import+caches
>>>+cache1+=+caches['myalias']
>>>+cache2+=+caches['myalias']
>>>+cache1+is+cache2
True|code-block|syntax|javascript|904424|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.djangoproject.com/en/3.0/topics/cache/#accessing-the-cache^0|0|E|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

<a href="https://docs.djangoproject.com/en/3.0/topics/cache/#accessing-the-cache" rel="nofollow noreferrer">From the docs:</a>

<pre><code>&gt;&gt;&gt; from django.core.cache import caches
&gt;&gt;&gt; cache1 = caches['myalias']
&gt;&gt;&gt; cache2 = caches['myalias']
&gt;&gt;&gt; cache1 is cache2
True
</code></pre>

I need to use memcached and file based cache.
I setup my cache in settings:

<pre><code>CACHES = {
 'default': {
 'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
 'LOCATION': 'c:/foo/bar',
 },
 'inmem': {
 'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
 }
}
</code></pre>

dummy is temporary.
Docs says:

<pre><code>cache.set('my_key', 'hello, world!', 30)
cache.get('my_key')
</code></pre>

OK, but how can I now set and get cache only for 'inmem' cache backend (in future memcached)? Documentation doesn't mention how to do that.

How to use 2 different cache backends in Django?

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我需要使用memcached和基于文件的缓存。我在设置中设置了我的缓存：CACHES = {    'default': {        'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',        'LOCATION': 'c:/f...

问如何在Django中使用两个不同的缓存后端？
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