def update(self, url, cache_info=None):
key = hashlib.md5(url).hexdigest()<EOL>access_time = None<EOL>if not cache_info:<EOL><INDENT>cache_info = CacheInfo()<EOL><DEDENT>if not access_time:<EOL><INDENT>cache_info.access_time = now_utc()<EOL><DEDENT>self._cache_meta_set(key, cache_info.to_dict())<EOL>
Update cache information for url

:param url: Update for this url
:type url: str | unicode
:param cache_info: Cache info
:type cache_info: floscraper.models.CacheInfo
:rtype: None