详解Django框架中的视图级缓存
更加颗粒级的缓存框架使用方法是对单个视图的输出进行缓存。 django.views.decorators.cache定义了一个自动缓存视图响应的cache_page装饰器。 他是很容易使用的:
from django.views.decorators.cache import cache_page def my_view(request): # ... my_view = cache_page(my_view, 60 * 15)
也可以使用Python2.4的装饰器语法:
@cache_page(60 * 15) def my_view(request): # ...
cache_page 只接受一个参数: 以秒计的缓存超时时间。 在前例中, “my_view()” 视图的结果将被缓存 15 分钟。 (注意: 为了提高可读性,该参数被书写为 60 * 15 。 60 * 15 将被计算为 900 ,也就是说15 分钟乘以每分钟 60 秒。)
和站点缓存一样,视图缓存与 URL 无关。 如果多个 URL 指向同一视图,每个视图将会分别缓存。 继续 my_view 范例,如果 URLconf 如下所示:
urlpatterns = ('', (r'^foo/(\d{1,2})/$', my_view), )
那么正如你所期待的那样,发送到 /foo/1/ 和 /foo/23/ 的请求将会分别缓存。 但一旦发出了特定的请求(如: /foo/23/ ),之后再度发出的指向该 URL 的请求将使用缓存。

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