NewCache creates a new cache.

The request included an Authorization header without an explicit Public or Expiration time: http://tools.ietf.org/html/rfc7234#section-3.2.

The request method was CONNECT and CONNECTs are not cachable.

The request method was DELETE and DELETEs are not cachable.

The request method was OPTIONS and OPTIONS are not cachable.

The request method was POST and an Expiration header was not supplied.

The request method was PUT and PUTs are not cachable.

The request method was TRACE and TRACEs are not cachable.

The request method was not recognized by cachecontrol, and should not be cached.

The request included an Cache-Control: no-store header.

The response included an Cache-Control: no-store header.

The response included an Cache-Control: private header and this is not a Private cache.

The response failed to meet at least one of the conditions specified in RFC 7234 section 3: http://tools.ietf.org/html/rfc7234#section-3.

Cache is a LRU cache with the following features - limits on max entries - memory size limit - ttl for entries.