django tastypie 缓存不适用于列表数据

Question

我正在使用 python 2.7，django=1.5 和 tastypie v0.12.1 当我被击中 1 追索数据然后缓存正在发生

class BranchResource(ModelResource):
    class Meta:
        collection_name="data"
        queryset = Branch.objects.all()
        resource_name = 'branch'
        authorization = Authorization()
        limit = 0 #(unlimted)
        filtering = {
            "branch_flag": ALL,
            "branch_name":('exact', 'startswith','istartswith',),
            "cid":ALL,
        }
        cache = SimpleCache(timeout=1000)

当我点击

时缓存是否在工作

http://127.0.0.1:8000/v0/branch/1

但是当我获取所有数据时，缓存不起作用

http://127.0.0.1:8000/v0/branch/

当时缓存不起作用是直接命中数据库并从数据库中获取数据

Answer 1

来自Tastypie documentation：

However, it’s worth noting that these do NOT cache serialized representations. For heavy traffic, we’d encourage the use of a caching proxy, especially Varnish, as it shines under this kind of usage. It’s far faster than Django views and already neatly handles most situations.

你有两个选择：

实现您自己的缓存 class，派生自 tastypie.cache.SimpleCache 或 tastypie.cache.NoCache，并支持可迭代数据类型。
听从 tastypie 的建议并使用专用缓存服务器。

Answer 2

我想问题出在您的服务器配置上。请编辑您的服务器配置文件，如下所示（如果是 nginx） vi /etc/nginx/sites-enabled/your-site-name 并在文件

中加入下面一行代码

location / {

   proxy_pass http://127.0.0.1:8000;
   proxy_set_header Host $host;
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_cache     cache;

   }
}

您必须做的第二件事是在您的项目中创建一个 directory/folder 称为缓存

Finally go to nginx.conf and edit the file like this
vi /etc/nginx/nginx.conf
go to line no 80
proxy_cache_path yourworkspace/projectname/cache keys_zone=cache:1m max_size=2m;

完成！！！现在缓存可以正常工作了

Answer 3

您可以覆盖 tastypie.resources.ModelResource 中的函数 get_list 更改代码

objects = self.obj_get_list(bundle=base_bundle,**self.remove_api_resource_names(kwargs))

到

objects=self.cached_obj_get_list(bundle=base_bundle,**self.remove_api_resource_names(kwargs))

完整代码：

def get_list(self, request, **kwargs):
    base_bundle = self.build_bundle(request=request)

    objects = self.cached_obj_get_list(bundle=base_bundle, **self.remove_api_resource_names(kwargs))

    sorted_objects = self.apply_sorting(objects, options=request.GET)

    paginator = self._meta.paginator_class(request.GET, sorted_objects, resource_uri=self.get_resource_uri(), limit=self._meta.limit, max_limit=self._meta.max_limit, collection_name=self._meta.collection_name)
    to_be_serialized = paginator.page()

    # Dehydrate the bundles in preparation for serialization.
    bundles = []

    for obj in to_be_serialized[self._meta.collection_name]:
        bundle = self.build_bundle(obj=obj, request=request)
        bundles.append(self.full_dehydrate(bundle, for_list=True))

    to_be_serialized[self._meta.collection_name] = bundles
    to_be_serialized = self.alter_list_data_to_serialize(request, to_be_serialized)

    return self.create_response(request, to_be_serialized)

然后 http://127.0.0.1:8000/v0/branch/ will get cached,not only http://127.0.0.1:8000/v0/branch/1

django tastypie 缓存不适用于列表数据

django tastypie caching is not working for list data

django

caching

python-2.7

tastypie