是否有任何插件或第三方后端来管理Django中的redis连接,因此view.py中的方法不必为每个请求显式连接到redis?
如果没有,您将如何开始实施?一个新的插件?一个新的后端?一个新的django中间件?
谢谢。
答案 0 :(得分:5)
我认为非可靠性数据库的新兴标准是django-nonrel。我不知道django-nonrel是生产就绪还是支持redis,但他们有writing a custom no-sql backend的指南。
不幸的是,我不认为在编写DatabaseBackend
时,在标准django上编写对redis的支持很容易。 django模型的机制和工作流程中有很多假设ACID数据库。那么syncdb
呢?关于Querysets
?
但是,您可以尝试使用models.Manager
编写一个穷人方法,并对您的模型进行大量调整。例如:
# helper
def fill_model_instance(instance, values):
""" Fills an model instance with the values from dict values """
attributes = filter(lambda x: not x.startswith('_'), instance.__dict__.keys())
for a in attributes:
try:
setattr(instance, a, values[a.upper()])
del values[a.upper()]
except:
pass
for v in values.keys():
setattr(instance, v, values[v])
return instance
class AuthorManager( models.Manager ):
# You may try to use the default methods.
# But should be freaking hard...
def get_query_set(self):
raise NotImplementedError("Maybe you can write a Non relational Queryset()! ")
def latest(self, *args, **kwargs):
# redis Latest query
pass
def filter(self, *args, **kwargs):
# redis filter query
pass
# Custom methods that you may use, instead of rewriting
# the defaults ones.
def open_connection(self):
# Open a redis connection
pass
def search_author( self, *args, **kwargs ):
self.open_connection()
# Write your query. I don't know how this shiny non-sql works.
# Assumes it returns a dict for every matched author.
authors_list = [{'name': 'Leibniz', 'email': 'iinventedcalculus@gmail.com'},
'name': 'Kurt Godel','email': 'self.consistent.error@gmail.com'}]
return [fill_instance(Author(), author) for author in authors_list]
class Author( models.Model ):
name = models.CharField( max_length = 255 )
email = models.EmailField( max_length = 255 )
def save(self):
raise NotImplementedError("TODO: write a redis save")
def delete(self):
raise NotImplementedError(""TODO: write a delete save")
class Meta:
managed = False
请注意,我只是简要介绍了如何调整django模型。我还没有 测试并运行此代码。我首先建议你调查django-nonrel。