app/django/core/cache/backends/memcached.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Tue, 14 Oct 2008 16:00:59 +0000
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permissions -rw-r--r--
Load ../vendor/django into trunk/app/django.
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"Memcached cache backend"
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from django.core.cache.backends.base import BaseCache, InvalidCacheBackendError
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from django.utils.encoding import smart_unicode, smart_str
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try:
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    import cmemcache as memcache
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except ImportError:
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    try:
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        import memcache
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    except:
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        raise InvalidCacheBackendError("Memcached cache backend requires either the 'memcache' or 'cmemcache' library")
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class CacheClass(BaseCache):
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    def __init__(self, server, params):
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        BaseCache.__init__(self, params)
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        self._cache = memcache.Client(server.split(';'))
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    def add(self, key, value, timeout=0):
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        if isinstance(value, unicode):
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            value = value.encode('utf-8')
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        return self._cache.add(smart_str(key), value, timeout or self.default_timeout)
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    def get(self, key, default=None):
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        val = self._cache.get(smart_str(key))
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        if val is None:
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            return default
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        else:
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            if isinstance(val, basestring):
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                return smart_unicode(val)
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            else:
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                return val
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    def set(self, key, value, timeout=0):
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        if isinstance(value, unicode):
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            value = value.encode('utf-8')
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        self._cache.set(smart_str(key), value, timeout or self.default_timeout)
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    def delete(self, key):
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        self._cache.delete(smart_str(key))
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    def get_many(self, keys):
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        return self._cache.get_multi(map(smart_str,keys))
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    def close(self, **kwargs):
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        self._cache.disconnect_all()
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