plone.caching所有304的截获错误

Question

我最近开始将plone.caching规则集声明添加到我的视图中：

<cache:ruleset
    for=".views.MyContentTypeView"
    ruleset="plone.content.itemView"
    />

我已经开始在我的开发网站的日志中看到这些：

2012-10-23 14:48:02 ERROR Zope.SiteErrorLog 1351000082.330.867850813917 http://localhost:12311/my_content_type/@@landing
Traceback (innermost last):
  Module ZPublisher.Publish, line 117, in publish
  Module zope.event, line 31, in notify
  Module zope.component.event, line 24, in dispatch
  Module zope.component._api, line 136, in subscribers
  Module zope.component.registry, line 321, in subscribers
  Module zope.interface.adapter, line 585, in subscribers
  Module plone.caching.hooks, line 102, in intercept
Intercepted

来自hooks.py，在intercept（）的docstring中：

To properly abort request processing, this will raise an exception. The
actual response (typically an empty response) is then set via a view on
the exception. We set and lock the response status to avoid defaulting to
a 404 exception.

因此看起来这些错误可能是预期的行为？如果是这样，是否可以让Zope忽略这些错误，这样它们就不会混乱我的日志？